LS Industrial Systems XBC-E Series - Two Response Frame Are Dealt with as Unknown When Execution Frame Monitor; Unable to Analyze TRX Frame; Unable to Determine if Client or Server Is Causing the Error

Chapter 10 Maintenance
XBC E-Type Main Unit 10-23 Ver. 1
10.7.4 Two response frame are dealt with as unknown when execution frame monitor
Anomaly
Reason
Trouble shooting
Two response frame are dealt with as unknown when
executing frame monitor
Communication
type in XG-PD is
set as RS-422
but output wiring
method is RS-
485
Change
communication type
as RS-485 and write
it to PLC.
10.7.5 Unable to analyze TRX frame
Anomaly Reason Trouble shooting
Unable to analyze TRX frame
More than one server
sends frame
1. Execute 1:1 communication with
server and check if it works
properly.
2. Take interlock for servers not to
sends frame simultaneously.
In case parity bit setting
is not coincident
Set the parity bit to be same each
other
In case stop bit setting
is not coincident
Set the stop bit to be same each
other
In case communication
speed setting is not
coincident
Set the communication speed to be
same each other
In case of multi drop,
terminal resistance is
not installed
Install terminal resistance
10.7.6 Unable to determine if client or server is causing the error
Anomaly Reason Trouble shooting
Unable to determine if client or
server is causing the error
-
1. Check Cnet I/F module
- Check module’s equipment status
- Check wiring
2.Check main unit status