411GB RS-232C Communication Unit DL-RS1A User's Manual (SK-1000 Series) Read this manual before using the system in order to achieve maximum performance. Keep this manual in a safe place for future reference.
Introduction This manual provides an overview of the RS-232C communication unit DL-RS1A and describes the functions and procedures of the unit. Be sure to read this manual carefully to ensure safe performance and function of the unit. Keep this manual in a safe place for future reference. Ensure that this manual is passed to the end user. Safety Precautions General Cautions • At startup and during operation, be sure to monitor the functions and performance of the DL-RS1A for proper operations.
Contents Contents Symbols T6 (Sensor amplifier settings change time)............................................................................... 16 Safety Precautions Specifications36 General Cautions Handling Errors Operating Precautions Performance Specifications ........................................................................................... 16 Communication Specifications....................................................................................... 16 Dimensions............
Before Using the Unit Before Using the Unit (1) Communication setup switches You can use different ON/OFF combinations to configure the communication settings. Checking the Package Contents Setting Switch No. Combination Before using the DL-RS1A, check that the following items are all included. 1 2400bit/s 4800bit/s ON 2 Baud rate ON 1 2 3 9600bit/s* ON 1 2 3 19200bit/s 38400bit/s ON ON 1 2 3 1 2 3 1 2 3 * Factory default positions are shown.
Connecting the Unit to Sensor Amplifiers Before Using the Unit This section describes how to mount a DL-RS1A and connect it to sensor amplifiers. (5) Alarm indicator This indicator lights up in red. For information on the actions you should take when an alarm occurs, refer to "Troubleshooting" (page 19). After turning on the power, the alarm indicator lights for the following amount of time, and communication cannot be performed during this time. No.
Connecting the Unit to Sensor Amplifiers Connecting the Unit to Sensor Amplifiers Connecting the DL-RS1A to DIN rail mount sensor amplifiers Connecting the Unit to Sensor Amplifiers 1 NOTICE Remove the expansion protective cover from the sensor amplifier that you want to connect to the DL-RS1A. You use DL-RS1A by connecting it to sensor amplifiers. The connection method varies according to the mounting type of the sensor amplifiers.
Connecting the Unit to External Devices Connecting the Unit to External Devices Connection wiring Communication Terminal Block Refer to the connection wiring diagram shown below when connecting DL-RS1A to an external device such as a PC. You can connect external devices such as a PC or PLC to the communication terminal block of DL-RS1A via the communication cables.
Communication Specifications Connecting the Unit to External Devices This section provides the communication specifications of DL-RS1A and describes how to configure the unit. Sample wiring DL-RS1A (Communication terminal block) *1 *2 SG 1 RD 2 SD 3 SG SG DRQ 6 Shield*2 External device (D-sub 9-pin) Communication Specifications Black, Black/White*1 Red The following table lists the communication specifications for DL-RS1A.
Commands and Responses Commands and Responses Response Overview of Commands and Responses ID No. 00 01 02 06 07 When DL-RS1A successfully receives a command from the external device, it automatically returns a response based on ASCII codes. For information on the parameters used in the response, refer to "Parameters of Commands and Responses" (page 10). Command or DRQ input Sample response structure S Main Exp. Exp. Exp. Exp.
Commands and Responses Commands and Responses Error response If DL-RS1A could not receive a command from the external device or if the received command included an error, it automatically returns an "error response" based on ASCII codes. For information on the parameters used in the error response, refer to page 10. R (1) , S R (2) , Command Error No. CR LF (3) (4) S (1) Contains "ER". (2) Contains the same communication command as the received command.
Commands and Responses Commands and Responses Read with external input to the DRQ terminal (DRQ read) You can send an input signal (by short-circuiting DRQ (terminal number 6) and SG (terminal number 1, 4, or 5)) from an external device such as a PLC instead of sending a command. Writing External devices such as PLC's use the following communication commands to write data to DL-RS1A.
Parameters of Commands and Responses This section describes the parameters used with various commands and responses. z Read-only data There are two types of communication commands: read commands and write commands. Attribute Description Reads the data for the specified data number from the sensor amplifier with the specified ID number. M0 Reads the comparator value (P.V. value) that DL-RS1A periodically retrieves from all sensor amplifiers.
Parameters of Commands and Responses Bit 9 10 11 12 13 *9 Sensor amplifier error details Unused Unused Amplifier communication error Unused Unused For information on each error, refer to "SK-1000 Series Instruction Manual" Reference Parameters of Commands and Responses The execution result for the item last requested, either the zero shift execution request or zero shift reset execution request, is read. *10 This item includes the results for the initial reset execution.
Parameters of Commands and Responses z Read/write data The following table lists the types of data that can be read from and written to SK-1000 Series sensor amplifiers. Point • A communication error (error No. 22) occurs if improper data was written to an expansion unit. • A parameter error (error No. 22) occurs if writing is attempted during an initial reset operation. After the completion of an initial reset, verify that the EEPROM writing result (data No.
Parameters of Commands and Responses Reference When the specified data is "006": "6" converted to binary number is "0110". Bit 3, 2, 1: 1 to 5 V Error numbers The following table lists the error numbers that are returned as error responses when errors occur in the communication with the SK-1000 Series. Each error number is identified with two digits (ASCII characters). Bit 0: NPN output Therefore, the setting of the amplifier to which the data is written is "NPN output" and "Analog output 1 to 5 V".
Communication Response Time This section describes the communication response time for each communication command and various time frames. Communication Response Time and Time Chart This section describes the concept of communication response time and the time chart for the communication commands. Communication Response Time DRQ input The data read in response to a DRQ input is the buffered data that DL-RS1A periodically retrieves from the sensor amplifiers.
Communication Response Time Communication Response Time T4 (DL-RS1A command processing time) Time Frames of Communication Response Time This section describes the communication time frames (T2 to T6). Reference The maximum time required is shown for each time frame. However, depending on the actual environment, it may require more time. The processing time varies according to the command sent from the external device.
Specifications Communication Response Time T5 (Response send time from DL-RS1A) The time required to send a response varies depending on the communication speed, data bit length, and number of bytes. For information on the communication settings, refer to page 2. The response time can be calculated using the following formula: Performance Specifications The following table shows the performance specifications for DL-RS1A.
Troubleshooting Specifications Problem Dimensions 43.8 37.2 (48.2) 22.5 When the unit is mounted on the DIN rail 21.1 35.4 70 Unit：mm 5 51.3 43.8 37.2 When the optional fixture (OP-60412) is used 31.4 15 2-φ3.4 70 Action 22.5 2-(4.4x3.4) Cause Power is not Make sure that the voltage of the power supplied to the supplied. sensor amplifier main unit is 20 to 30 VDC.
ASCII Code Table The following table lists the ASCII codes.
WARRANTIES AND DISCLAIMERS Revision History Date of printing Version September 2014 First edition Revision contents (1) KEYENCE warrants the Products to be free of defects in materials and workmanship for a period of one (1) year from the date of shipment. If any models or samples were shown to Buyer, such models or samples were used merely to illustrate the general type and quality of the Products and not to represent that the Products would necessarily conform to said models or samples.
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