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screen will display information as follows:
Fault information on LED screen and remedies:
CPU and I/O
Module
Indication
Remedy
No fault
-
CPU model does not agree
with software. Check that
the PLC is authorized.
Contact your distributor
CPU Local expansion bus
error
Check the connection between
local rack modules.
Configuration error
Check that the configuration
of the local rack module is
consistent with that in the
software.
Module error
Check whether the local
rack module reports a fault,
and check the detailed fault
information in the software.
High-Speed I/O
Indication
Remedy
High-speed input error
Check the detailed fault
information in the software.
High-speed input alarm
Check the detailed fault
information in the software.
High-speed output error
Check the detailed fault
information in the software.
High-speed output alarm Check the detailed fault
information in the software.
ModBus
Indication
Remedy