Endress+Hauser Liquiline CM44 series - FC08 Diagnostics (Only Serial)

SD01189C/07/EN/04.17
Endress+Hauser
11
3.4.3 FC08 Diagnostics (only serial)
Request
Function code
1 Byte
0x06
Starting address
2 Byte
Quantity of Registers
N x 2 Byte
Reply
Function code
1 Byte
1 Byte
Byte Count
2 Byte
Holding register value
N x 2 Byte
Error
Error code
1 Byte
0x88
Exception code
1 Byte
01 or 03 or 04
Subfunction 0x00: Return Query Data (Loopback)
Example Request
Functionscodes
0x08
Subfunction
0x00
Data (example)
0x01 0x02 0x03 0x04
Response is identical to Request
Function code
0x08
Subfunction
0x00
Data
0x01 0x02 0x03 0x04
Subfunction 0x02: Return diagnostic register
Reads the parameter:
Parameter
Register
Bit
MB_FC08_DIAGNOSE
500
0
Sensor 1 has a diagnostic message
1
Sensor 2 has a diagnostic message
2
Sensor 3 has a diagnostic message
3
Sensor 4 has a diagnostic message
4
Sensor 5 has a diagnostic message
5
Sensor 6 has a diagnostic message
6
Sensor 7 has a diagnostic message
7
Sensor 8 has a diagnostic message
8
General diagnostic message
9..11
Reserved = 0
12
Status signal F (failure)
13
Status signal C (function check)
14
Status signal M (maintenance request)
15
Status signal S (out of specification)
The definition of the status signal complies with Namur recommendation NE107.