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Trycom Technology TRP-C28 User Manual page 35

4-channel isolated digital input and 4-channel power relay output rs485 module, support ascii and modbus protocol.
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Command
ID 03 00 SS 00 NN (CRC)
ID
Syntax
03
Description
00 SS
00 NN
Response
ID 03 BC DATA (CRC)
ID 83 ER (CRC)
10-20. Read digital input counter value
Command
ID 04 00 SS 00 NN (CRC)
ID
Syntax
04
Description
00 SS
00 NN
Response
ID 04 BC DATA (CRC)
ID 84 ER (CRC)
Example:
Send command : "01 04 00 00 00 04".....Read channel 0~3 counter value.
Response:" 01 04 08 00 28 00 5A 00 53 00 55" Command valid.
10-21.Clear/save DI counter value and set up DO output
Address of setting module 1~247
Function Code
Start channel number SS=00
Channel number NN=01~04
ID 03 ......Module command Line
BC: Byte Counter ,Each channel 2byte
DATA :Channel counter value
ID 83 :Error Code
ER=00 Syntax error
ER=01 Data Format error
ER=02 Start channel error
ER=03 I/O out of range
Address of setting module 1~247
Function Code
Start channel number SS=00
Channel number NN=01~04
ID 04 ......Module command Line
BC: Byte Counter ,Each channel 2byte
DATA :Channel counter value
ID 84 :Error Code
ER=00 Syntax error
ER=01 Data Format error
ER=02 Start channel error
ER=03 I/O out of range
35

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