ICP DAS USA M-7065 User Manual page 96

Function code
0x01
0x02
0x03
0x04
0x05
0x06
0x0F
0x46
If the function specified in the message is not supported, then
the module responds as follows. Address mapping of
Protocol(Base 0).
Error Response
00 Address
01 Function code
02 Exception code
If a CRC mismatch occurs, the module will not respond.
M-7065 User's Manual Ver2.0, Dec. /200 8 ---96
Description
Read coils
Read discrete inputs
Read multiple registers
Read multiple input registers
Write single coils
Write multiple registers
Write multiple coils
Read/Write module settings
1 Byte 1 to 247
1 Byte Function code + 0x80
1 Byte 01
Section
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8