MBS Protocol
PLX3x Series ♦ Multi-Protocol Gateways
User Manual
Page 128 of 215
ProSoft Technology, Inc.
January 25, 2018
Warning: None of these addresses are available in the Modbus address range. In order to access
this data through a Modbus request, you must move the data into the 0 to 3999 address range.
See Mapping Data in Module Memory (page 24).
Port 1 General Modbus Error and Status Layout
The addresses listed are for Port 1only. The format is the same for each port.
See General Modbus Error and Status Data (page 127) for the start address for
each port.
Example Internal
Database Address
Offset
Description
4400
0
Number of Command Requests
4401
1
Number of Command Responses
4402
2
Number of Command Errors
4403
3
Number of Requests
4404
4
Number of Responses
4405
5
Number of Errors Sent
4406
6
Number of Errors Received
4407
7
Configuration Error Code
4408
8
Current Error/Index
4409
9
Last Error/Index
