OWNER'S MANUAL ___________________ MODEL 24 DATA EXCHANGE SYSTEM Rev. 1.
Thank you for selecting a BayTech Model 24 Data Exchange System. The data provided in this Owner's Manual explains the various ways you can operate your unit and configure it to your own computer system. We suggest that you read this manual carefully before attempting to install the Model 24 and that you place special emphasis on correct cabling and configuration. If you have any problems with your installation, please contact a BayTech applications engineer for assistance.
NOTE: The information contained in this document is subject to change without notice. Copyright 1993 by Bay Technical Associates, Inc. IBM, IBM PC, IBM PC/AT, IBM PC/XT are products and registered trademarks of International Business Machines Corporation. Hewlett-Packard LaserJet and Draftmaster I Plotter are products and registered trademarks of the Hewlett-Packard Company. Word Perfect is a product of WordPerfect, Inc. WordStar is a registered trademark of MicroPro International Corp.
TABLE OF CONTENTS 1 GENERAL INFORMATION ........................................................................ 1 2 SPECIFICATIONS ..................................................................................... 4 3 QUICK REFERENCE ................................................................................. 7 4 INSTALLATION ........................................................................................ 10 4.1 4.2 4.3 4.4 4.5 5 10 10 12 12 13 CABLING.............................
6.2 COMPUTER-TO-PERIPHERAL OPERATING PROCEDURE .. 23 6.2.1 6.2.2 6.2.3 6.2.4 6.2.5 6.2.6 6.2.7 6.2.8 6.2.9 6.2.10 6.3 6.3.2 6.3.3 INITIATING A COMPUTER-TO-COMPUTER CONNECTION ............................................................. 33 FILE TRANSFER ......................................................... 34 MODEM SHARING ...................................................... 34 LED INDICATORS ..................................................................... 36 DATA FLOW CONTROL ..............
8 MAINTENANCE ....................................................................................... 64 9 REPACKING FOR SHIPPING.................................................................. 64 10 TECHNICAL SUPPORT........................................................................... 65 11 FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFACE STATEMENT ...................................................................... 66 APPENDIX A CABLING TO MODEL 24 DTE.........................
The BayTech Model 24 Data Exchange System is a high performance peripheral sharing solution offering versatile and flexible connectivity between computers and various peripheral devices. Computers may share plotters, modems, and laser printers as well as access other computers to share data bases and transfer files. Cost effectiveness is thus achieved through resource sharing among multiple users. Figure 1 below shows a Model 24 with twenty-four ports installed.
Each port offers high speed data communication with unidirectional serial throughput up to 38.4k bits per second (bps). The dynamically allocated buffer is available from 512K to 4.5MB. Other features of the Model 24 include: 1) High-speed data transfer to handle faster computers and software; 2) Networking between pairs of computers or computers and other devices such as modems, bar code readers, etc.
You may program the following features to meet the requirements of your application: the Port Designation for each port (computer or printer), the individual Serial Port Configuration (baud rate, word size, stop bits, parity, and XON/XOFF handshaking), the Port Logical Names, the Input Inactivity Timeout, the Port Select Code, the Port Select Mode, the Form Feed Mode, and the I.D. Page Message.
INTERFACE: Serial ports - Asynchronous EIA-232 (CCITT V.24), -12v mark, +12v space. Full duplex communication. Optional EIA-422 and current loop. Parallel ports - Centronics protocol. I/O MODULES: (Maximum 6 I/O modules per unit; minimum 2 serial ports per unit.
USER-PROGRAMMABLE CONFIGURATIONS: Reconfigurable in menu-driven mode through configuration port. Saved in non-volatile memory to become power-up default configuration. Through Host Port or any Serial Computer Port: Baud rate: (per port) 300, 600, 1200, 2400, 4800, 9600, 19200, 38400. Other rates optional. Word size: (per port) 7 or 8 bits. Parity: (per port) Even, odd or none. Stop bits: (per port) 1 or 2. XON/XOFF: (per port) Enabled or disabled individually for transmit and receive.
INTERNAL BUFFER: Spooling print buffer - standard 512K, expandable up to 4.5M by 256K (Option 1) or 1M (Option 3) increments. Flow control buffer (computer-to-computer) 128-character receive and 128-character transmit per port. POWER: 115 VAC, 50/60 Hz., .3A. Optional 230 VAC, 50/60 Hz., .2A. ENVIRONMENT: 0 degrees to 55 degrees C temperature; 5% to 95% humidity. DIMENSIONS: 16.75w x 10d x 3.5h inches. WEIGHT: 9 1/2 lbs. with 6 modules installed. 8 lbs. with no I/O modules installed.
This section provides basic set up instructions for those knowledgeable in computer equipment installation. We will refer to specific sections in this manual for more in-depth instructions on installation operation, and configuration. Please review the following procedure: Step Instructions 1 Determine how many and what type of I/O modules are installed. Identify which ports are serial and which are parallel. Serial ports on the MOD 4C and MOD 4E I/O modules have DB-25 male connectors.
4 CABLING Correct cables for the serial and parallel ports are vital for error free operation. A. Serial Ports Serial ports on the MOD 4C and MOD 4E I/O modules are DTE. Therefore, crossed cabling is required between the computer's serial port and serial ports on these modules. A crossed cable is also required between serial ports on the MOD 4C and MOD 4E I/O modules and the serial port of a printer or plotter.
B. Physically insert the Port Select Code as the first characters of the text or data in the document. See Section 6.2.8 (Port Select Methods) for more information concerning the Port Select Code. C. Create a separate file containing only the Port Select Code. See Section 6.2.8 (Port Select Methods) for more information. 7 MODE COMMANDS NOTE: If you are not connecting any serial PCs, you may skip this step.
After opening the box, check the packing list that comes with the Model 24 to ensure that you have received all components. Also check the unit to make certain that it did not incur damage during shipping. BayTech provides utility software to assist you in configuring the Model 24. There are three peripheral selection programs included to provide easy device selection from text mode, graphics mode, or Windows.
To run INSTALL, use the following procedure: 1. Insert the software utility diskette into drive A (or drive B) and from the prompt type INSTALL followed by . 2. A menu titled "Drive & Directory Definitions" will appear on your screen. This menu will display the Source Drive, Destination Drive, and Destination Directory. The Source Drive is the floppy drive where the diskette is inserted. The Destination Drive is the drive where the expanded files will be copied to (default is drive C).
The Model 24 requires 115VAC, 50/60 Hz. power and comes with a three-prong power cord. Do not attempt to operate the unit with a two-prong socket or adapter. 230 VAC, 50/60 Hz. is optional. The Model 24 powers up when you press the power switch on the front of the unit to "ON". Power-on is indicated on the front panel by the illuminating of a green LED. CAUTION: Do not attempt to make any internal changes.
This section provides instructions on how to set up your PC to work with the Model 24 with respect to the BayTech software (if you intend to use it) and special considerations when connecting your PC in serial. If you intend to use the RAMEXEC or RAMTSR hot key programs to select between multiple peripherals, you would typically add the command C:>RAMEXEC or C:>RAMTSR to your PC's AUTOEXEC.BAT file.
You will also need to change the serial port configuration of your PC's com port to match that of the Model 24. If using the Model 24's factory default serial configuration, this is accomplished via the DOS command C:>MODE COMy: 9600, N, 8,1,P where y is the number of the appropriate com port. This command should be part of your AUTOEXEC.BAT file. Alternatively, you may use the SMODE.EXE utility to operate at speeds greater than 9600 bps.
Please see Section 5.1 for parallel port cabling information or Section 5.2 for serial port cabling information. Appendix A provides recommended cabling pinouts. Parallel ports on the Model 24 have DB-25 female connectors. A straight, DB-25 male-to-male cable is required between each IBM PC computer (or compatible) and the parallel ports on the Model 24.
! IMPORTANT: Before you proceed with cabling, you must know whether the devices to which you will connect the Model 24 are DTE (Data Terminal Equipment) or DCE (Data Communication Equipment). The following devices are generally DTE: terminals, printers, computers like the IBM PC. The following devices are DCE: modems and some computers. If your device transmits data on Pin 2 or receives data on Pin 3, it is DTE.
Serial ports on the Model 24's MOD 4CF I/O module have DB-25 female DCE connectors. DCE ports use the following signals for communication: DCE PORT PIN/SIGNAL DEFINITION Pin Signal (EIA-232) Direction Description 1 PGND --- 2 Tx Input 3 Rx Output 4 RTS Input 5 CTS Output -12V When Buffer is Full 6 DSR Output +12 V When Model 24 Powers Up. 7 SGND --- 8 DCD Output 20 DTR Input Protective Ground Data In Data Out Internally Enabled if No Wire Connected (Normally Not Used).
MODEL 24 - DTE FEMALE DB-25 DCE DEVICE MALE DB-25 1 PGND 2 TXD 3 RXD 4 RTS 5 CTS 7 SGND 20 DTR > < > < > PGND 1 TXD 2 RXD 3 RTS 4 CTS 5 SGND 7 DTR 20 Figure 2 - Model 24 (DTE) to DCE Device MODEL 24 - DTE FEMALE DB-25 DTE DEVICE FEMALE DB-25 1 PGND 2 TXD 3 RXD 4 RTS 5 1 PGND < > CTS < > 6 DSR < > 7 SGND 20 DTR TXD 2 RXD 3 RTS 4 CTS 5 DSR 6 SGND 7 DTR 20 Figure 3 - Model 24 (DTE) to DTE Device NOTE: Please refer to Appendix A for recomm
" This section discusses the various user-programmable configurations (Section 6.1), computer-to-peripheral operation (Section 6.2), computer-to-computer operation (Section 6.3), the LED indicators (Section 6.4), and data flow control (Section 6.5).
" The Port Destination for individual ports on the Model 24 may be configured as computer or printer. Computers and modems connect to computer ports. Printers and plotters connect to printer ports. A minimum of one port must always be assigned as a computer port and at least one port must be a printer port. It is suggested that Port 1, the master configuration port, be designated as a computer port to allow easy access to all features of the configuration mode.
If the computer is communicating 7 bit word size with parity enabled, the 8th or parity bit is masked from the Port Select Code before it is examined, allowing you to send the Port Select Code with odd or even parity. Section 6.2 discusses how to use the Port Select Code to select peripheral ports and Section 6.3 describes computer port selection. Factory default is $SELECT. " In multiple peripheral applications, you can choose between two methods of selecting peripherals.
" " # The input inactivity timeout allows the Model 24 to disconnect the computer if no characters are received from the computer for the specified timeout period. The input inactivity timeout is effective only for computer-to-peripheral communication. For computer-to-computer communication, the timeout is ineffective and disconnect occurs only manually. Some application packages may have rather lengthy processing delay times between successive parts of the same file when printing.
" % You can print a programmable message and the logical name of the source computer on a separate sheet of paper before or after printing any other data. You can enable or disable the I.D. page message and whether you want it to print before or after the print job. Factory default is: This print job is for:, with the I.D. message disabled.
Please see the table below for a quick reference to sections pertaining to computer-to-peripheral operation. COMPUTER-TO-PERIPHERAL QUICK REFERENCE Item " See Section: Sharing a single peripheral 6.2.1 Specified sharing of multiple peripherals 6.2.2 Contending for multiple peripherals 6.2.3 Buffering of print data 6.2.4 Beginning and ending a print job 6.2.5 Buffer clearing 6.2.6 Minimum size print job 6.2.7 Port Selection Methods 6.2.8 Full Duplex Communication 6.2.
" To select a specific peripheral in multiple peripheral applications, you must send a specific port select sequence which consists of the Port Select Code (factory set is $SELECT), the desired printer port number, and a terminating character: Enter/Carriage Return or Line Feed. The port select sequence is trapped if valid and not passed to the peripheral.
In Port Select Mode B (port selection at beginning of sending), the Model 24 looks for the Port Select Code in the first 16 characters received. If the first characters of the Port Select Code are not received within 16 characters, the data will be routed to the previously designated peripheral. If the first characters of the Port Select Code are received within 16 characters and a valid port select sequence is then received, the new port number is stored and data will be routed to that peripheral.
The port select sequence, either default or temporary, may be sent by manually inserting it into the file. Or BayTech's support software will send it for you when you strike designated hot keys. Please see Section 6.2.8 for a description of some of the various port selection techniques. " When a user sends a print job, the data is stored in Model 24's spooling buffer (standard 512K, available up to 4.5 MB).
" & A print job starts when the Model 24 receives three or more characters from a computer. The characters must be sent in a time period shorter than the designated timeout. In Port Select Mode A, a print job is ended when one of the following occurs: 1. No characters are received by the Model 24 from the computer for the specified input inactivity timeout period. 2.
NOTE: In Port Select Mode A, when the input inactivity timeout is set to 0 (zero) seconds, you must use method 2, 3, or 4 on the previous page to end a print job. In Port Select Mode B, a print job is ended only when no characters are received by the Model 24 from the computer for the specified input inactivity timeout period. CAUTION: The input inactivity timeout should not be set to 0 (zero) seconds in Port Select Mode B.
" $ ' & The Model 24 scans for a minimum size print job of three (3) characters. If more than 3 characters are received within the designated input inactivity timeout interval, the unit will treat these characters as a print job. If less than 3 characters are received, these characters will be discarded. " % BayTech provides utility software which allows you to conveniently select between peripherals for IBM DOS and Microsoft Windows applications.
You may use a DOS batch file to send a port select sequence. The DOS command typically used is the ECHO command. An example of the ECHO command used to select a printer connected to Port 2 using the default Port Select Code is the following: ECHO $SELECT2>LPT1:. This command should be entered in all capitals with only one space between ECHO and the $. Please refer to your DOS manual for instructions on creating DOS batch files.
" * When using the Model 24 in a plotter sharing application, it is recommended that you send plot files to the Model 24 rather than plotting dynamically from within your plotting software. You would typically have the application software direct the plot to a file and then copy the file to the Model 24. This method eliminates the requirement for full duplex communication between the computer and the plotter which allows multiple computers to copy plot files simultaneously.
" The Model 24 will allow pairs of serial computers (or computers and other devices such as modems, scales, data collection equipment, etc.) to communicate while other computers are sending print jobs to the unit. Full duplex communication allows file transfer with many popular communications software packages. NOTE: Computer-to-computer communication can occur only if both ports communicating are serial.
" File transfer can be achieved with a computer-to-computer connection through the Model 24 as long as the communicating computers are each running a third-party communications software package. Note that to effectively achieve file transfer, both computers should be running the same communications program. The port select sequence should be sent from within your communications package by using a macro or manually typing it out so you can see the On Line or Busy message.
For example, suppose you want to communicate with a 2400 baud modem connected to Port 2 and your PC is connected to a computer port set at the Model 24's factory default serial configuration (9600 baud, 8 data bit, 1 stop bit, no parity, and XON/XOFF disabled). Port 2 would need to be configured to communicate at 2400 baud to match the baud rate of the modem.
" The Model 24 has a green power LED and either four, eight, or ten red activity LEDs. The green power LED will illuminate whenever power is applied to the unit. The red LEDs indicate activity on the respective port(s) when illuminated while the unit is in operation mode. All red LEDs will illuminate briefly when the unit first powers up and goes through its self-test. All red LEDs will stay illuminated while the unit is in configuration mode (see Section 7).
" " COMPUTER-TO-MODEL 24-TO-PERIPHERAL PERIPHERAL-TO-MODEL 24-TO-COMPUTER When a computer transmits data to a peripheral device through a computer port on the Model 24, the data is received and stored in the spooling buffer (standard 512K; optional up to 4.5 MB) which in turn retransmits it to a peripheral device through a printer port.
COMPUTER-TO-MODEL 24-TO-COMPUTER When Computer A transmits data to Computer B through the Model 24, the data is received from Computer A and stored in a 256-character buffer which in turn retransmits it to Computer B. When there are only 15 bytes available in the buffer, the Model 24 will make the DTR line low to Computer A, signaling Computer A that it cannot accept more data. When the buffer of the Model 24 can receive more data, the Model 24 will make the DTR line high to Computer A.
COMPUTER-TO-MODEL 24-TO-PERIPHERAL PERIPHERAL-TO-MODEL 24-TO-COMPUTER When a computer transmits data to a peripheral device through a computer port on the Model 24, the data is received and stored in the spooling buffer (standard 512K; optional up to 4.5M) which in turn retransmits it to a peripheral device through a printer port. During transmission, when there are only 15 bytes available in the buffer, the Model 24 will send an XOFF, signaling the transmitting computer that it cannot accept more data.
When the buffer of the Model 24 can receive more data, the Model 24 will send an XON to Computer A. NOTE: For computers sending binary data and using XON/XOFF handshaking, the input flow control (Recv) should be enabled and the output flow control (Xmit) should be disabled. This will allow any XON or XOFF character sent in the binary string to be passed through the Model 24 to the receiving device. " *** The Model 24 has a special option to order for the HP 3000 mini computer.
$ Configuration changes for the entire Model 24 are made through the master configuration port which is Port 1. Port 1 must always be a serial port to allow configuration to occur. Port 1 has access to the configuration of all ports on the Model 24 and can program all options of the configuration mode. A serial computer connected to a port other than Port 1 may access configuration mode for that port only.
To access the configuration mode of the Model 24, use the following procedure: 1. Connect a dumb terminal (or a PC running a terminal emulation program) to the master configuration port (Port 1) or to any serial computer port. From the factory, the Model 24 is configured as all ports computer ports, except Port 2. All serial ports are factory preset at 9600 baud rate, 8 word size, 1 stop bit, no parity, and XON/XOFF disabled. NOTE: If you wish to use the BayTech TERM.
If you do not have a dumb terminal or a terminal emulation program, BayTech supplies a utility diskette which includes software to put an IBM PC or compatible into a terminal mode. See Section 4.2 for instructions to obtain the software (TERM.EXE) by running the INSTALL.EXE program if you have not already done so. Once you have obtained TERM.EXE, use the following procedure: 1.
3. Refer to the upper right hand corner of the screen for Handshaking line status. RTS, CTS, DSR, and DTR should all be HIGH. The DCD line is not looked at by the terminal emulation program therefore its status can be ignored. If these signals are not high at this point, check to ensure the correct cable is connected. 4. Depress function key: F1. NOTE: The F1 key in TERM sends the character sequence Control-T (14 Hex) followed by the ASCII capital C character (43 Hex).
$ OPTION ACCESSIBILITY: Through Port 1 with full menus, or through any serial computer port with abbreviated menus. The Model 24 will respond to the receiving of Control-T and capital C with an identification block and a menu of the configuration options available, similar to the following: (C)Copyright Bay Technical Associates 1989 Model 24 Data Exchange System Version 1 Revision 1.05 Total Memory : 0512K Bytes Status......................................
$ OPTION ACCESSIBILITY: Through Port 1 with full menus, or through any serial computer port with abbreviated menus. By responding to the Enter Request: message at the end of the main configuration menu (Section 7.1) with "1" (Status), you may review the status of the current configuration of the Model 24.
••••••••••••••••••••••••••••••••••••••••••••••••••• • Port • Baud • Word • Stop •Parity• Xon / Xoff • • • Rate • Size • Bits • • Xmit • Recv • ••••••••••••••••••••••••••••••••••••••••••••••••••• • 1 • 9600 • 8 • 1 • None • Off • Off • • 2 • 9600 • 8 • 1 • None • Off • Off • • 3 • 9600 • 8 • 1 • None • Off • Off • ••••••••••••••••••••••••••••••••••••••••••••••••••• Strike any Key to Continue, or X to Exit Port Select Code is :$SELECT I.D. Page Message is : This Print Job is for : Status......................
$ OPTION ACCESSIBILITY: Through Port 1 with full menus, or through any serial computer port with abbreviated menus. By responding to the Enter Request: message at the end of the main configuration menu (Section 7.1) with "2" (Program Port Logical Name), you may enter a logical or identifying name for each device connected to the Model 24. These logical names appear in the configuration menus and also in the I.D. Page Message if it is enabled.
••••••••••••••••••••••••••••••••••••••••••••••••••••••• • Port • Logical • Port • Port •Printer• • • • Type •Designatn •Assignt• Name ••••••••••••••••••••••••••••••••••••••••••••••••••••••• • 1 • Main IBM • Serial • Computer • 0 • • 2 • Device B • Serial • Printer • 2 • • 3 • Device C • Serial • Computer • 0 • • 4 • Device D • Parall • Computer • 0 • ••••••••••••••••••••••••••••••••••••••••••••••••••••••• Enter Port Number (ENTER = Exit) : You may now program a new logical name for another port, if desired
Enter the number of the port that you wish to designate a computer port or a printer port and then strike . For example, if you entered "4" and for Port 4, the Model 24 will respond with: Port is designated as a ( Computer) Port Enter P for Printer, C for Computer, ENTER for no change : You may now designate the port by entering "P" for printer port or "C" for computer port. may be sent for no change.
$ OPTION ACCESSIBILITY: Through Port 1 only. By responding to the Enter Request: message at the end of the main configuration menu (Section 7.1) with "4" (Program Port Select Code), you may change the Port Select Code to a user-defined code. This Port Select Code consists of any 1 to 8 ASCII characters. The Model 24 will respond with the following: Port Select Code is :$SELECT Enter Port Select Code (Max. 8 characters) or ENTER for no change : Enter the new Port Select Code.
$ " OPTION ACCESSIBILITY: Through Port 1 with full menus, or through any serial computer port with abbreviated menus. By responding to the Enter Request: message at the end of the main configuration mode (Section 7.1) with "5" (Set Port Select Mode), you may change the method of selecting ports.
You may now proceed to set the Port Select Mode for another port, or exit by striking . The Model 24 will save the new Port Select Mode permanently in non-volatile memory and return to the main configuration menu (see Section 7.1). $ $ OPTION ACCESSIBILITY: Through Port 1 with full menus, or through any serial computer port with abbreviated menus. By responding to the Enter Request: message at the end of the main configuration menu (Section 7.
You may now reconfigure Port 3 by selecting the appropriate option (1-6) from the menu. For example, to change the baud rate to 2400 baud, send character "2" (Set baud rate).
You should then enter "Y" to enable XON/XOFF on receive, "N" to disable XON/XOFF on receive.
If you enter "Y", the new configuration for that port will be stored permanently in non-volatile memory, and the Model 24 will subsequently power-up at that configuration. If you enter "N", the new configuration will be stored in RAM, and on the next power-up, the Model 24 will revert to the previous configuration.
$ % # OPTION ACCESSIBILITY: Through Port 1 with full menus, or through any serial computer port with abbreviated menus. By responding to the Enter Request: message at the end of the main configuration menu (Section 7.1) with "7" (Set Input Inactivity Timeout), you may set the disconnect timeout. The Model 24 will automatically disconnect the computer and printer if no characters are received from the computer for the specified timeout period.
For example, if you entered "100" for 100 seconds, the Model 24 will respond with: Input Inactivity Timeout is 100 second(s) Enter New Value (0 to 200), or ENTER for no change : If no other change is required, strike . The Model 24 will respond with the reconfigured status and the prompt. You may now set the timeout for another computer port, or exit by striking .
You should then enter "1" if you wish to enable form feed at the beginning of printing, "2" if you wish to disable form feed at the beginning of printing, or strike if no change from the present condition is required.
$ * OPTION ACCESSIBILITY: Through Port 1 only. By responding to the Enter request: message at the end of the main configuration menu (Section 7.1) with "9" (Program I.D. Page Message), you may program the content of this identifying message. Note that the I.D. Page Message is a prefix for the logical name of the device from which the data is being sent. The Model 24 will respond with: I.D.
$ + By responding to the Enter Request: message at the end of the main configuration menu (Section 7.1) with capital A (Enable/Disable I.D. Page Message), you may cause the I.D. Page Message to print or not to print by individual port. Print Master will respond with: ••••••••••••••••••••••••••••••••••••••••••••• • Port • Computer • Form Feed • I.D.
You may now enter another port number, or exit by striking . The Model 24 will save the enabling or disabling of the I.D. Page Message permanently in non-volatile memory and return to the main configuration menu (see Section 7.1). $ OPTION ACCESSIBILITY: Through Port 1 only. By responding to the Enter Request: message at the end of the main configuration menu (Section 7.1) with capital B (Select Print Schedule for I.D. Page), you may schedule the I.D.
If no further change is required for Port 2, strike . The Model 24 will respond with the reconfigured status and the prompt: •••••••••••••••••••••••••••••••••••• • Port • Printer •I.D.Page• • • Logical Name •Schedule• •••••••••••••••••••••••••••••••••••• • 2 • Device B • After • • 4 • Device D • Before • •••••••••••••••••••••••••••••••••••• Enter Printer Port Number (ENTER = Exit) : You may now reconfigure another port, or exit by striking . The Model 24 will save the new I.D.
% Since there are no adjustments and no moving parts in the Model 24, preventative maintenance is unnecessary. If you find it necessary to return the Model 24 to the factory for warranty work or factory-set changes, follow the procedure listed under Section 9 for repacking. Before you ship your unit, please call BayTech to get a Return Authorization number. BayTech cannot accept warranty or no-charge returns without this number. Ship your unit to the address listed under Section 10.
* In the event that you have problems with the Model 24, please check the Troubleshooting Guide in Appendix B. BayTech has a staff of applications engineers on duty to assist you from 7 am to 6 pm (CST or CDT), Monday through Friday. When you call BayTech Tech Support, please have the following information available to help the applications engineers answer your questions more efficiently: 1.
, 11 This equipment generates and uses radio frequency energy and, if not installed and used properly (that is, in strict accordance with the manufacturer's instructions) may cause interference to radio and television reception.
APPENDIX A CABLING TO MODEL 24 DTE A.
NIMUM CABLING USING HARDWARE HANDSHAKING FOR ONE-WAY DATA TRANSFERS MODEL 24 FEMALE DB-25 PC FEMALE DB-25 68
69
3 7 20 TXD 2 CTS 5 DSR 6 SGND 7 DCD 8 DTR 20 RXD SGND DTR MINIMUM CABLING USING HARDWARE HANDSHAKING FOR TWO-WAY DATA TRANSFERS MODEL 24 FEMALE DB-25 PC FEMALE DB-25 70
71
2 TXD TXD 2 3 RXD RXD 3 RTS 4 CTS 5 DSR 6 SGND 7 DCD 8 DTR 20 5 7 20 CTS SGND DTR 72
A.
74
DCD 1 2 TXD RXD 2 3 RXD TXD 3 4 RTS DTR 4 5 CTS SGND 5 DSR 6 RTS 7 CTS 8 7 20 SGND DTR MINIMUM CABLING USING XON/XOFF HANDSHAKING MODEL 24 FEMALE DB-25 AT FEMALE DE-9 75
76
DCD 1 2 TXD RXD 2 3 RXD TXD 3 DTR 4 SGND 5 DSR 6 RTS 7 CTS 8 7 SGND 77
MINIMUM CABLING USING HARDWARE HANDSHAKING FOR ONE-WAY DATA TRANSFERS MODEL 24 FEMALE DB-25 AT FEMALE DE-9 78
79
RXD 3 DCD 1 TXD 3 DTR 4 SGND 5 DSR 6 CTS 8 SGND 7 20 DTR MINIMUM CABLING USING HARDWARE HANDSHAKING FOR TWO-WAY DATA TRANSFERS MODEL 24 FEMALE DB-25 AT FEMALE DE-9 80
81
DCD 1 2 TXD RXD 2 3 RXD TXD 3 DTR 4 SGND 5 DSR 6 CTS 8 CTS 5 SGND 7 20 DTR 82
A.
84
2 TXD TXD 2 3 RXD RXD 3 4 RTS RTS 4 5 CTS CTS 5 6 DSR DSR 6 7 SGND SGND 7 20 DTR DTR 20 MINIMUM CABLING USING XON/XOFF HANDSHAKING MODEL 24 FEMALE DB-25 HP LASERJET MALE DB-25 85
86
2 TXD TXD 2 3 RXD RXD 3 RTS 4 CTS 5 DSR 6 SGND 7 7 SGND 87
MINIMUM CABLING USING HARDWARE HANDSHAKING MODEL 24 FEMALE DB-25 HP LASERJET MALE DB-25 88
89
2 TXD TXD 2 3 RXD RXD 3 RTS 4 CTS 5 DSR 6 SGND 7 5 CTS 7 SGND DTR A.
91
2 TXD TXD 2 3 RXD RXD 3 4 RTS RTS 4 5 CTS CTS 5 6 DSR DSR 6 7 SGND SGND 7 20 DTR DTR 92 20
A.
94
1 STROBE 1 2 DATA 0 2 3 DATA 1 3 4 DATA 2 4 5 DATA 3 5 6 DATA 4 6 7 DATA 5 7 8 DATA 6 8 9 DATA 7 9 10 ACKNOWLEDGE 10 11 BUSY 11 12 PAPER OUT 12 13 SELECT 13 14 AUTO FEED/OV 14 15 ERROR 32 16 INIT PRINTER 17 SELECT INPUT/OV 16 18 OV 19 19 OV 20 20 OV 21 OV 22 22 OV 23 23 OV 24 24 OV 25 25 OV 26 31 21 95
) Please check this troubleshooting guide before calling BayTech Tech Support. NOTE: This troubleshooting guide is geared towards the IBM PC, AT, XT family and compatibles. The term "PC" as used below refers to any IBM PC, AT, XT or compatible. PROBLEM: DATA DOES NOT PRINT SYMPTOM: POWER LED DOES NOT ILLUMINATE CAUSE: Unit is not turned on. SOLUTION: Put switch on. CAUSE: A/C Power cord is not plugged in. SOLUTION: Plug power cord into proper A/C power outlet. CAUSE: Fuse Blown.
SYMPTOM: NO PORT LEDs ILLUMINATE CAUSE: PC serial cable. SOLUTIONS: 1) 2) 3) Check cabling between PC and Model 24. Check handshaking lines using TERM program. All lines (except DCD which is not used) should be high. If lines are high, turn Model 24 off. You should notice CTS and DSR lines go low. If they do not go low, there is a good chance cable is incorrect (see Appendix A). Typing characters from TERM should illuminate PC LED on Model 24. Check installation procedures for PC's serial port.
CAUSE: LPTX not rerouted to COMX port for PC serial communication. SOLUTION: Reroute COM port as follows: MODE LPTX:=COMY (X = 1, 2 or 3)(Y = 1, 2) CAUSE: Model 24 is in configuration mode (all LEDs will be illuminated). SOLUTION: Exit configuration mode or recycle power. SYMPTOM: PC AND PRINTER PORT LEDs ILLUMINATE, BUT NOTHING PRINTS CAUSE: Printer cable. SOLUTION: Correct parallel or serial cable between Model 24 and printer (see Appendix A). CAUSE: Printer is off-line.
PROBLEM: CANNOT CONFIGURE MODEL 24 SYMPTOM: CONTROL-T FOLLOWED BY CAPITAL C SENT IN DUMB TERMINAL MODE (OR F1 IN TERM PROGRAM) DOES NOT INVOKE CONFIGURATION MENUS. CAUSE: Cable. SOLUTION: Use correct serial cable between PC and Model 24. Check handshaking lines using TERM program. CAUSE: Port configuration. SOLUTION: Match baud rate, word size, stop bits, parity and handshaking lines between Model 24 and PC. This can be done using TERM program. CAUSE: Port selection.
CAUSE: PC serial card uses IRQ4 instead of IRQ3. SOLUTION: Reconfigure serial card, use different serial card or different terminal emulation program. PROBLEM: PRINTS GARBAGE SYMPTOM: MISSING CHARACTERS CAUSE: Incorrect cable type. SOLUTION: Check manual for correct pinouts between PC and Model 24, and between Model 24 and printer. Check handshaking. A way to check is to force an error condition at the printer (i.e, remove paper tray from laser printer or turn off-line with power still applied).
SYMPTOM: RANDOM GARBAGE CHARACTERS CAUSE: Serial port configuration. SOLUTION: In Model 24's configuration mode, match baud rates, word size, stop bits, parity, and handshaking with the connected device. CAUSE: Cable length. SOLUTION: Use shorter length or higher-quality cable. Parallel cable should not exceed 15 feet. If using serial cable, length should not exceed 150 feet. PROBLEM: CANNOT SELECT PRINTER CAUSE: Port selection. SOLUTION: Port Select Code may be going out on wrong port (e.g.
SYMPTOM: SOME SORT OF PORT SELECT CODE PRINTS ON DOCUMENT CAUSE: Port Select Code sent does not match Port Select Code configured in Model 24. SOLUTION: Match the Port Select Code sent exactly with that configured in Model 24. PROBLEM: CANNOT SELECT PRINTER DURING PRINT JOB CAUSE: You are using Port Select Mode B (port selection at beginning of sending only). SOLUTION: Switch to Port Select Mode A in configuration (port selection anytime while sending). PROBLEM: HOT KEY SOFTWARE HANGS UP PC WHEN EXECUTED.
PROBLEM: PRINT JOB SWITCHES PRINTERS IN THE MIDDLE OF A PRINT JOB CAUSE: Timeout period too short. SOLUTION: Increase input inactivity timeout period via configuration mode. CAUSE: Port Select Code sent in the middle of the document. SOLUTION: Verify that the Printer Select Code is not contained in the document. Do not activate the hot key software while the print job is still being sent from the computer.
PROBLEM: PRINT JOBS ARE LOST WHEN MULTIPLE USERS ARE SENDING PRINT JOBS. CAUSE: Printer port is not connected to a printer or is connected to a powered-down printer. Data sent to a non-connected printer port or a powered-down printer will be lost. SOLUTION: Select a printer that is physically connected and powered on. NOTE: Printer ports that do not have a printer physically connected should be reconfigured to a computer port.
) ) Applications 2, 9, 13, 20-26, 30, 65 Applications engineers 65 ASCII 5, 20, 30, 40, 42, 44, 51 ASCII character string 20 Asynchronous 4 Autoexec 9, 13, 14 Baud rate 3-5, 7, 12, 21, 34, 35, 42, 43, 53-55, 76, 77, 78 Buffer 2, 6, 16, 17, 23, 24, 26-29, 31, 37-40, 54 Buffer clearing 24, 29 Buffering of print data 24, 27 Busy message 33, 34 Cabling 2, 8, 15, 16, 18, 67-72, 75 Case sensitive 45 CCITT 4 CDT
COMX 76, 80 Configuration mode 3, 7, 8, 12, 20, 23, 36, 41, 42, 45, 52, 55, 63, 75-77, 79, 81 Configuration port 5, 12, 20, 41, 42, 55, 77 Connectors 6, 7, 15, 16 Contending 24, 26 Contention mode 25, 26, 50 Control characters 42 Control-C 60 Control-T 42, 44, 45, 77 CRT 43, 60 CST 65 CTS 6, 16, 17, 37-39, 43, 44, 75, 78, 80 Current loop 4 Data Communication Equipment 16 Data flow control 19, 37 Data Terminal Equipment 16 Data Terminal Ready 37 Data transfer 2 DB-25 6-8, 15, 1
EIA-232 4, 15-17 EIA-422 4 Emulation 3, 42-44, 77, 78 Ending a print job 24, 28 Eprom 12 Error condition 78 Factory-default settings 12 FAX 65 Federal communications commission 66 File transfer 33, 34 Floating condition 80 Form feed mode 3-5, 12, 19, 22, 45, 47, 58, 59 Full duplex communication 4, 20, 31-34, 43 Handshaking 3, 6, 17, 31, 37-40, 43, 44, 67-72, 75, 76, 77-79 HP 3000 option 40
& Jumpers 75 Laser 1, 78 Laserjet 3, 1, 40, 71, 72 LED 6, 12, 19, 36, 42, 74, 75, 78 Logical name 4, 5, 12, 19, 23, 45-49, 52, 57-63 LPTx 9, 13, 76, 80 Main configuration menu 42, 44-46, 48-51, 53, 56, 57, 58-63 Main configuration mode 52 Maintenance 64 Manual disconnect 28, 57 Master configuration port 12, 20, 41, 42, 55 MB 27, 37 MicroPro 3 Microstuf 3 Minimum size print job 5, 24, 30 Missing characters 78 Modem 1, 9, 34, 35, 49 Modem sharing 9, 34
Parallel-to-serial 20 Parity 3-5, 7, 12, 21, 35, 42, 43, 47, 53-56, 76-79 PC COM port 43, 75, 77 Peripheral-to-model 37, 39 Pin assignment 15 Plotter 3, 1, 2, 7, 8, 23, 24, 32, 36, 49, 72 Port assignment 4, 41 Port designation 3, 5, 7-9, 20, 23, 25, 45, 47, 49, 50, 75 Port logical name(s) 12 Port Select Code 3-5, 9, 12, 19-21, 25, 26, 28-31, 33, 41, 45, 47, 51, 57, 79-81 Port Select Mode 3, 5, 12, 19, 21, 25, 26, 28, 29, 45, 47, 52, 53, 57, 79, 80 Port selection 5, 9, 21, 24-27
Serial number 65 Serial port configuration 3, 7, 8, 14, 19, 21, 45, 47, 53, 56, 79 Serial-to-parallel 20 Shielded 6, 66 SoftKlone 3 Software drivers 65 Specifications 4, 21, 66 Spooling 2, 6, 27, 37, 39 Status 44-47, 50, 51, 53-55, 58, 63, 65, 75 Stop bits 3, 5, 7, 21, 43, 53-55, 76-79 Strobe line 15 Technical Support 9, 65 Television reception 66 Telex 65 Temperature 6 Temperature 8, 42-44, 74, 75, 77, 80 Terminal 3, 16, 37, 42-44, 77, 78 Terminal
Warranty 6, 64 Weight 6 Word Perfect 14, 31 Word processing programs 30 Word size 3-5, 7, 12, 21, 34, 42, 43, 53-55, 76-79 WordStar 3, 31 ) XMIT 40, 47, 53-56 XON/XOFF 3-7, 12, 17, 21, 35, 38, 40, 42, 53-55, 67, 69, 71, 72, 78 XON/XOFF handshaking 3, 38, 40, 67, 69, 71, 72 111
OTHER BAYTECH PRODUCTS Print Master 700 Series printer controllers are made in several different configurations satisfying various interface requirements. Each unit allows computers to share, select and/or contend for printers easily and economically, without switching cables. The internal buffering system allows simultaneous, high-speed input from all connected computers and output to all printers. Models come in six, eight, and ten port sizes.
LaserShare is an intelligent printer controller that allows up to four or eight computers to send data to a single HP LaserJet laser printer. LaserShare MIO installs into the HP LaserJet Series IIISi, Series 4, and Series 4SI and will support serial speeds up to 460K bps. LaserShare connects directly into the optional I/O or MIO slot of the laser printer. Power is taken directly from the laser printer so there is no need for a power cord.
TRAN-X high speed parallel/serial converter products allow you to extend parallel cables to 1000+ feet and allow your network server, graphics workstation, or PC to send/receive data at speeds up to 46,000 characters per second. You can use the Tran-x Series with BayTech Model 24SII, LaserShare, or network print servers for the fastest long distance peripheral sharing solution available anywhere. Modular cabling provides simplicity in connections between remote devices.
Telplex Model TX104M is an asynchronous statistical multiplexer with built-in modem. Four individual communications channels are multiplexed into a single dial-up or leased telephone line, cutting phone line costs to a minimum. The TX104M features a V.22 bis internal modem which provides reliable communication at speeds up to 4800 bps. With V.42 bis protocol, the TX104M provides error correction and Classes 2-4 data compression.
Broadcasting (G-Series): Will simultaneously broadcast whatever data is received on the host port out to either 4 or 8 peripheral devices while sending data from a single selected peripheral device back to the host device. This unit is also capable of operating in a port expansion mode such as the A-Series. Auto T-Switch (T-Series): Allows a group of up to 6 terminals to switch between two computer systems. NOTE: All ports on the 500 Series are standard with EIA-232 ports.
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