0X03) Read Output Channels; 0X03) Read Output Channels - ICP DAS USA I-7021 User Manual

M-7022, M-7024, M-7024L, M-7024R, M-7024U

3.3 03 (0x03) Read Output Channels

This function code is used to read the analog output values of a
module.
Request
00 Address
01 Function code
02 ~ 03 Starting channel
04 ~ 05 Number of
output channels
(N)
Response
00 Address
01 Function code
02 Byte count
03 ~ Data of output
channels
Error Response
00 Address
01 Function code
02 Exception code
156 I-7021/22/24, M-7022/24/28 User Manual, Rev: B2.3
1 Byte 1 ~ 247
1 Byte 0x03
2 Bytes 0x0000 ~ 0x0001 for M-7022
0x0000 ~ 0x0003 for M-7024
0x0000 ~ 0x0003 for M-7024L
0x0000 ~ 0x0003 for M-7024R
0x0000 ~ 0x0003 for M-7024U
0x0000 ~ 0x0007 for M-7028
2 Bytes 0x0001 ~ 0x0002 for M-7022
0x0001 ~ 0x0004 for M-7024
0x0001 ~ 0x0004 for M-7024L
0x0001 ~ 0x0004 for M-7024R
0x0001 ~ 0x0004 for M-7024U
0x0001 ~ 0x0008 for M-7028
1 Byte 1 ~ 247
1 Byte 0x03
1 Byte N x 2
N x 2 Data in the specified data format
Bytes
1 Byte 1 ~ 247
1 Byte 0x83
1 Byte 02: starting channel out of range
03: (starting channel + number of
output channels) out of range,
incorrect number of bytes received