Crestron CEN-COM Ethernet RS-232/422 COM Module Contents Ethernet RS-232/422 COM Module: CEN-COM 1 Description................................................................................................................................. 1 Functional Description ................................................................................................ 1 Physical Description....................................................................................................
Crestron CEN-COM Ethernet RS-232/422 COM Module Ethernet RS-232/422 COM Module: CEN-COM Description Functional Description The CEN-COM is an Ethernet device with two independent bidirectional serial ports that can support either asynchronous RS-232 or RS-422-based communication. The unit enables a system to overcome the distance limitations of RS-232/RS-422 communication. All signals are monitored/controlled via 10BASE-T Ethernet using standard Internet protocols.
Ethernet RS-232/422 COM Module Crestron CEN-COM • Provides character pacing in units of milliseconds for all of the data specified. The range of the pacing is from 1 to 31 milliseconds. Pacing greater than 31 milliseconds defaults to the maximum (31 ms). • Supports RS-485. However, a specific protocol for defining the mechanism as to when a device is permitted to transmit on the RS-485 bus must be followed. To use this feature, use RS-422 communications settings. Set hardware handshaking to none.
Crestron CEN-COM Ethernet RS-232/422 COM Module CEN-COM Ports A number of ports are provided on the back of the CEN-COM. Each has a silkscreened label. Refer to illustration and descriptions below. The Ethernet port is located on the front panel. CEN-COM Ports 12 VDC .5 A This DC power socket connector is used to supply power via an external AC power pack. Crestron recommends specific power packs for its devices.
Ethernet RS-232/422 COM Module Crestron CEN-COM COM A / B These two 9-pin connectors (DB9) connect to serial equipment. These bidirectional serial ports are used for RS-232, RS-422, or RS-485 communication. NOTE: The pinout of each 9-pin port is non-standard (refer to table after this note); it contains RS-422 pins in addition to RS-232. This may result in a conflict with some equipment and therefore do not use all nine pins. Only the required pins for each communication type should be connected.
Crestron CEN-COM Ethernet RS-232/422 COM Module Ethernet Port (RJ45) Pinouts PIN DESCRIPTION 1 2 3 4 5 6 7 8 TD+ TDRD+ No Connect No Connect RDNo Connect No Connect CEN-COM Indicators There are 13 LED indicators located on the front panel of the CEN-COM. Refer to illustration and descriptions below. CEN-COM Indicators PWR (Power) This LED illuminates when power is supplied to the CEN-COM.
Ethernet RS-232/422 COM Module Crestron CEN-COM RTS (COM A / B) If RTS/CTS handshaking is enabled, these LEDs illuminate when the CEN-COM is ready to receive data from a serial device attached to the respective COM ports. CTS (COM A / B) These LEDs illuminate when the serial device on the respective COM port is ready to accept data from the CEN-COM. This “Clear to Send” signal is available only if RTS/CTS handshaking is enabled; signal is controlled by external serial device.
Crestron CEN-COM Ethernet RS-232/422 COM Module shown in the diagram is the Ethernet/LAN connection made to the front panel of the unit. Use a CAT 5 cable; not supplied. Hookup Connections for CEN-COM PC (USED ONLY WHEN ACCESSING SETUP MENUS) SERIAL DEVICE POWER PACK (500 mA) (1000 mA for CENI-COM) SERIAL DEVICE NOTE: CABLES ARE NOT SUPPLIED. ETHERNET CONNECTION NOT SHOWN.
Ethernet RS-232/422 COM Module Crestron CEN-COM Apply power to the CEN-COM and notice that the Viewport window changes as communication is established with the CEN-COM, shown below. Activity in the Viewport Window Enter a question mark (?) and depress ENTER to display the setup menu, shown below. Main Menu in Viewport Window At the time of printing this Operations Guide, not all commands (listed in the leftmost column) in the main menu were fully implemented.
Crestron CEN-COM Ethernet RS-232/422 COM Module Sample Response to the “add_master” Command Each row of the master list contains an index number enclosed in brackets, the IP ID of the device to which the system communicates (provided in decimal and hex), and an IP address separated by a colon (:). Each line appears as follows.
Ethernet RS-232/422 COM Module Crestron CEN-COM def_router The default router is the address of the router the CEN-COM uses to communicate with devices that are not connected directly on that subnet. To change the default router, enter the default router address after the “def_router” command. For example to change the default router address of the connected CENCOM to 201.201.201.0, enter the following. def_router 201.201.201.
Crestron CEN-COM Ethernet RS-232/422 COM Module Refer to the table after this paragraph for examples of valid commands. Valid “port” Commands COMMAND port DESCRIPTION Shows specs for both COM ports. Sets COM A to 9600, no parity, no port 1,9600,N81 handshake, no pacing, and mode is NONE. Sets COM A to 9600, no parity, no port 1,NONE,RS232,9600,N81,pacing 0 handshake, no pacing, and mode is NONE.
Ethernet RS-232/422 COM Module 5 Crestron CEN-COM The “Transfer In Progress” window appears while the transfer is in progress. “Transfer In progress” Window 6 When the transfer is complete, the CEN-COM reboots. Depress ENTER to re-establish communications with the CEN-COM. Stand-Alone Operations: Crestron e-control™ Crestron e-control encompasses two different technologies.
Crestron CEN-COM Ethernet RS-232/422 COM Module be found in the Crestron SDK documentation and example files. Be sure to enter the CEN-COM IP address for the IP parameter of this component. The ActiveCNX control can be thought of as a "Virtual Communication Port" or "e-control PC Interface symbol in SIMPL™ Windows. In the case of the CENCOM, it sends and receives serial data. The signals map directly to the device instead of signal number inputs to the SIMPL program.
Ethernet RS-232/422 COM Module Crestron CEN-COM Block Diagram of System Incorporating a CEN-COM For this example, the CEN-COM is set at IP.ID 03. Notice that the IP address of the CNMSX for this example is 132.149.2.26 and the IP address of the CEN-COM is 132.149.2.25. It is important that the CEN-COM is configured to have, in its static master list, an entry of IP ID 03 with an IP address of 132.149.2.26 so it can talk back to the CNMSX. Refer to “add_master” on page 8 and the diagram below.
Crestron CEN-COM Ethernet RS-232/422 COM Module the help file in SIMPL Windows. From the Contents search on Symbol Card File or from the Index search on the names of the symbols for details. How to Create the Program Configuration Manager Use the Configuration Manager workspace (Project | Configure System) in SIMPL Windows to select and configure all the devices that need to be included into the system. For this example, from the Control Systems folder in the Device Library select CNMSX-PRO.
Ethernet RS-232/422 COM Module Crestron CEN-COM System View of the CEN-COM in SIMPL Windows’ Configuration Manager For this example, a real COM port is used rather than a virtual COM port. To assign a real COM port, select the ST-COM from the Serial Drivers (General) folder in the Device Library. Drag the icon over to Port A in the Detail System View. The result is shown below.
Crestron CEN-COM Ethernet RS-232/422 COM Module Expand the Ethernet folder and double click on the CEN-COM. Double click on Port A for a detail view of the symbol (alternatively CTRL+D or drag and drop into Detail View). Assign the signal as shown after this paragraph. Detail View of the CEN-COM in SIMPL Windows’ Programming Manager All logic symbols necessary for the SIMPL Windows program must be added from the Symbol Library in the Programming Manager workspace.
Ethernet RS-232/422 COM Module Crestron CEN-COM Problem Solving Troubleshooting The table following this paragraph provides corrective action for possible trouble situations. If further assistance is required, please contact a Crestron customer service representative. CEN-COM Troubleshooting POSSIBLE CAUSE(S) TROUBLE PWR LED does not illuminate. CEN-COM does not communicate with PC. CORRECTIVE ACTION CEN-COM is not receiving power.
Crestron CEN-COM Ethernet RS-232/422 COM Module Return and Warranty Policies Merchandise Returns / Repair Service 1. No merchandise may be returned for credit, exchange, or service without prior authorization from CRESTRON. To obtain warranty service for CRESTRON products, contact the factory and request an RMA (Return Merchandise Authorization) number. Enclose a note specifying the nature of the problem, name and phone number of contact person, RMA number, and return address. 2.
Ethernet RS-232/422 COM Module Crestron CEN-COM Glossary of Terms Default Router Default router is the address of the router the device uses to communicate with devices that are not connected directly to the local network. IP Address Internet protocol address is a unique number that is used to represent every single computer in a network. All the computers on the internet have a unique IP address. The format of the IP address is four numbers separated by dots (e.g., 198.123.456.7).
Crestron CEN-COM Ethernet RS-232/422 COM Module Master List Master list is a list of Crestron Internet Protocol (CIP) enabled devices that will be informed of any changes in the state of the controlled device. The device accepts commands from the addresses of these masters. NMS Trap Catcher NMS trap catcher is the address of a SNMP monitoring station that sends any alarm messages that the monitored device wishes to send. Router Router is a communications device which routes data between networks.
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