Data Accessed With Function Code 07 - Read Exception Status; Data Accessed With Function Code 08 - Loopback Diagnostic Test; Data Accessed With Function Code 17 - Report Slave Id - rotork Modbus IQ Pro Technical Manual

Modbus MFU Option Card Installation Manual
7.6.7 Data Accessed with Function Code 07 – Read Exception Status
Code 07 reads a predefined data set with minimal overheads and is used for fast data transfer. A
single byte is returned.
Location
R/W
(Bit)
0 RO
1 RO
2 RO
3 RO
4 RO
5 RO
6 RO
7 RO
7.6.8 Data Accessed with Function Code 08 – Loopback Diagnostic Test
The Loopback Test is used to test communications only. In a correctly working unit the return
message is the same as the query sent. Two codes are supported.
Code
00 Return query data
02 Return diagnostic register
The Diagnostic Register contains the following data.
Location
R/W
(Reg/Bit)
- 0 RO
- 1 RO
- 2 RO
- 3 RO
7.6.9 Data Accessed with Function Code 17 – Report Slave ID
The Slave ID data response includes 20 registers, (40 bytes) of ASCII data to give the device name,
software version and service tag number.
Byte
1 – 23 'Null Null Rotork MODBUS MODULE.'
24 – 28 Software version: 'Mxxx ' (where xxx is the revision number)
29 – 40 Tag Number (12 bytes)
52 of 76
Data
ESD coil status
Open coil status
Close coil status
Stop coil status
Closed position limit
Open position limit
Monitor relay
Reserved
Data
Memory Status Fault
Auxiliary control input active
Position controller enabled
Highway ESD active
Publication PUB091-003-00_0119
Data
Data
Range
0-1
0-1
0-1
0-1
0-1
0-1
0-1
0-1
Range
0-1
0-1
0-1
0-1