PLX3x Series MBS Protocol
Ethernet and Serial Gateways User Manual
ProSoft Technology, Inc. Page 133 of 218
May 26, 2016
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
Number of Command Requests
Number of Command Responses
Number of Errors Received
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.
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