ProSoft Technology PLX31-EIP-SIE - Manual (Page 133)

PLX3x Series MBS Protocol
Ethernet and Serial Gateways User Manual
ProSoft Technology, Inc. Page 133 of 218
September 17, 2014
Port 1 General Modbus Error and Status Layout
The addresses listed are for Port 1only; but the format is the same for each port.
The start address for each port is given in the previous section.
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
Slave Port: General Port STATE and COMM STATE Status
Note: There are two additional port status parameters that are not available from the General
Modbus Error and Status Data area. The status values, Port STATE and Port COMM STATE
(circled in red), can be found only in the PCB diagnostic menus under Comm Status for a port as
shown in the following graphic.