Ethernet Communication Module DVPEN01-SL
DVP-PLC Operation Manual
11
CR#83: Read Length for Data Exchange
Explanations:
Setting up the Modbus address of the register for Master data exchange.
CR#84: Written-in Address for Data Exchange
Explanations:
Setting up manually the Modbus address of the register for Slave data exchange.
CR#85: Written-in Address for Data Exchange
Explanations:
The number of transmission registers (K1 ~ K100) in data exchange.
CR#86: Transmission Address for Data Exchange
Explanations:
1. Setting up the Modbus address of the register for Master data exchange.
2. Example: Write H’1000 (D0) into CR#81, K1 into CR#82, and H’1064 (D100) into CR#83. If
the data exchange is successful, the value in D0 of the Slave will be written into D100 of the
MPU. Or write H’1002 (D2) into CR#84, K4 into CR#85, and H’1008 (D8) into CR#86. If the
data exchange is successful, the value in D8 ~ D11 of the Master will be written into D2 ~ D5
of the Slave. Both sending and receiving can be executed at the same time. When the values
in CR#82 and #85 are both “0”, DVPEN01-SL will use the default registers (CR#29 ~ CR#68)
and number of registers (K20).
Sending Modbus TCP Instruction
CR#111: 8-bit Processing Mode
Explanations:
Setting up the Modbus TCP transmission mode. When the CR value is set as “0” Æ 16-bit mode;
when the CR value is set as “1” Æ 8-bit mode.
CR#112: Modbus Client Keep-Alive Time-out
Explanations:
CR#112 is the TCP Keep-Alive time-out for Modbus TCP connection (s). Default: 30s. If the
connection idle time becomes longer than the keep-alive time-out, DVPEN01-SL will cut off the
idle connection.
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