SinoCon KonNaD C2000-A1-SDD1010-AB3, Руководство пользователя

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In the response from the device we get:
0x000100000004FF020101
Command Field Description
0001 Transaction ID 2 Bytes, identification of a Modbus Request/Response transaction
0000 Protocol ID 2 Bytes, 0000 = Modbus protocol
0004 Length Field 2 Bytes, number of following bytes
FF Unit ID 1 Byte, FF = Master device
02 Function Code 1 Byte, 02 = Read
01 Data Length 1 Byte, Data Length
01 Data 1 Byte, 01 indicates DI is close
5.2.5. Read DI Positive Pulse Active State (0x02)
Take the case of acquisition 1 channel DI as an example. The command is as follows:
0x000100000006FF03012C0001
Command Field Description
0001 Transaction ID 2 Bytes, identification of a Modbus Request/Response transaction
0000 Protocol ID 2 Bytes, 0000 = Modbus protocol
0006 Length Field 2 Bytes, number of following bytes
FF Unit ID 1 Byte, FF = Master device
03 Function Code 1 Byte, 03 = Read
012C Starting Address 2 Bytes, address of the first register
0001 Quantity of Registers 2 Bytes, the number of required registers
Assuming the DI1 channel generates a valid positive pulse, the command returned by the device is as follows:
0x000100000005FF03020001
Command Field Description
0001 Transaction
ID
2 Bytes, identification of a Modbus Request/Response transaction
C2000-A1-SDD1010-AB3 User Manual
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