ComAp InteliGen NTC User Manual

Communication Guide, ©ComAp – March 2014 114
IGS-NT Communication Guide 03-2014.pdf
Byte
Meaning
Note
2
3
Communication object number
- upper byte (MSB)
- lower byte (LSB)
Same as in the query
4
5
Data
- upper byte (MSB)
- lower byte (LSB)
Same as in the query
6
7
Check field CRC
- lower byte (LSB)
- upper byte (MSB)
See Check field calculation
Exceptional response
Byte
Meaning
Note
0
Controller address
Same as in the query
1
134
Modbus fun.number  128
2
2
See Error list
3
4
Check field CRC
- lower byte (LSB)
- upper byte (MSB)
See Check field calculation
Write Multiple Registers
Query
Byte
Meaning
Note
0
Controller address
1 to 32
1
16
Modbus function code
2
3
Communication object number
- upper byte (MSB)
- lower byte (LSB)
See List of communication
objects
4
5
Communication object length expressed by the number of registers
- upper byte (MSB)
- lower byte (LSB)
Greater than 0
6
Length of written data in bytes (L)
Number of registers  2
7
8
Data of the 1st register
- upper byte (MSB)
- lower byte (LSB)
9
10
Data of the 2nd register
- upper byte (MSB)
- lower byte (LSB)
…
L  5
L  6
Data of the last register
- upper byte (MSB)
- lower byte (LSB)
L  7
L  8
Check field CRC
- lower byte (LSB)
- upper byte (MSB)
See Check field calculation
Standard response
Byte
Meaning
Note
0
Controller address
Same as in the query
1
16
Same as in the query
2
3
Communication object number
- upper byte (MSB)
- lower byte (LSB)
Same as in the query
4
5
Communication object length expressed by the number of registers
- upper byte (MSB)
- lower byte (LSB)
Same as in the query
6
7
Check field CRC
- lower byte (LSB)
- upper byte (MSB)
See Check field calculation
Exceptional response
Byte
Meaning
Note
0
Controller address
Same as in the query
1
144
Function code  128
2
2
See Error list
3
4
Check field CRC
- lower byte (LSB)
- upper byte (MSB)
See Check field calculation

ComAp InteliGen NTC Specifications

General

Brand	ComAp
Model	InteliGen NTC
Category	Controller
Language	English