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2014-
02
56
Commands
Command:
* This byte is only used with the TCP/IP and MODBUS TCP/IP protocol.
Confirmation (with MODBUS/TCP no confirmation is sent)
* This byte is only used with the TCP/IP and MODBUS TCP/IP protocol.
Response:
* This byte is only used with the TCP/IP and MODBUS TCP/IP protocol.
Byte 0*
Telegram length, high byte
Byte 1*
Telegram length, low byte
Byte 2
Command code
Byte 3
Channel / Toggle bit = 0
Byte 4
Parameter
Byte 5
Parameter
Byte 6
Data to be written
...
...
Byte N
Data to be written
Byte 0*
Telegram length, high byte
Byte 1*
Telegram length, low byte
Byte 2
Command code (echo)
Byte 3
Channel / Toggle bit (echo) = 0
Byte 4
Status FFh
Byte 5
Reply counter
...
00h
Byte N
00h
Byte 0*
Telegram length, high byte
Byte 1*
Telegram length, low byte
Byte 2
Command code (echo)
Byte 3
Channel / Toggle bit (echo) = 0
Byte 4
Status
Byte 5
Reply counter
Byte 6
Read data
...
...
Byte N
Read data