0X03) Read Multiple Registers - ICP DAS USA M-7065 User Manual

3.3 03(0x03) Read multiple registers

This function code is used to read the current
digital input counter value.
Request
00 Address
01 Function code
Starting channel
02-03 numbers or address
mapping
04-05 Input channel number
M-7065 User's Manual Ver2.0, Dec. /200 8 ---103
1 Byte
1 Byte
Reads DI count value :
0x0000-0x001F
Reads module
address:0x01E4
Reads firmware
version:0x01E0
Reads module
2 Byte name:0x01E2
Reads modbus delay
response time : 0x01E7
Reads timeout count :
0x01EB
Reads timeout value :
0x01E8
Host OK : 0x3038
0x0001-0x0020
2 Byte
(Word count)
1-247
0x03