Diagnosis And Troubleshooting - Leuze electronic MSI 400 Series Manual

MSI 430 as slave – data addressing
The following table lists the addresses for reading out the data sets.
Unit ID 1
Tab. 6.5: Data addressing for the MSI 430 as recipient
Register
(Base 1)
1000
1100
1200
1300
1400
2000
2100
2200
2300
2400
2500
1)
Corresponds to all activated input data sets.
2)
Must correspond to all activated output data sets. Example: If only output data sets 1 and 2 have been
activated, 10 words (20 bytes) must be written. If all output data sets have been activated, 25 words (50
bytes) must be written.
Modbus commands and error messages
The MSI 430 module supports the following Modbus commands and error messages:
Tab. 6.6: Modbus commands
Modbus command
Read holding registers
1)
Read input registers
Write single register
Write multiple registers
Read/write multiple registers
1)
starting with module version A-03
Tab. 6.7: Modbus error messages
Modbus error response
1 Function not permitted
2 Data address not permitted
3 Data value not permitted
4 server errors
6.4

Diagnosis and troubleshooting

You can find information on diagnosis of the MSI 400 system in the software manual.
Leuze electronic
Description
Request data for all activated input data sets
Request data from input data block 1-5
Request CRC data
Request diagnostic data
Reserved
Write all activated output data sets
Write data from output data set 1
Write data from output data set 2
Write data from output data set 3
Write data from output data set 4
Write data from output data set 5
Access
Reading
Reading
Reading
Reading
Reading
Read, write
Read, write
Read, write
Read, write
Read, write
Read, write
Value
3
4
6
16 (10hex)
23 (17hex)
Description
The requested function is not supported
Undefined data address received
Request with prohibited data values, e.g. insufficient
data requested for a data set
An error occurred during execution of the server.
MSI 400
Modbus TCP gateway
Scope (words)
1)
1..101
1..25
1..16
1..30
1..30
2)
1..25
1..5
1..5
1..5
1..5
1..5
51