0X02) Read Input Status - ICP DAS USA tM-TH8 User Manual

tM-TH8

3.2 02 (0x02) Read Input Status

This function code is used to read the thermistor wire opening
status of a module.
Request
00 Address
01 Function code
02 ~ 03 Starting channel
04 ~ 05 Number of input
channels
Response
00 Address
01 Function code
02 Byte count
03 Data of input
channels
Error Response
00 Address
01 Function code
02 Exception code
110 tM-TH8 User Manual, Rev: A1.1 7MH-018-A11
1 Byte 1 to 247
1 Byte 0x02
2 Bytes 0x80 to 0x87, where 0x80
corresponds to channel 0, 0x81
corresponds to channel 1, etc
2 Bytes N, 1 to 8; (Starting channel + N)
should be less than or equal to
0x88
1 Byte 1 to 247
1 Byte 0x02
1 Byte 1
1 Byte A bit corresponds to a channel.
When the bit is 1 it denotes that
the channel is enabled and is either
over-range, under-range or wire
opening. If the bit is 0 it denotes
that the channel is disabled or
normal.
1 Byte 1 to 247
1 Byte 0x82
1 Byte 02: starting channel out of range
03: (starting channel + number of
input channels) out of range,
incorrect number of bytes
received