Indicators - Omron SYSMAC CS Series Operation Manual

Unit Components
2-1-2

Indicators

Indicator Specifications
Indicator
RUN
ERC
(PROFIBUS Master Unit
Error)
ERH
(PLC Error)
PRM
(Parameter database)
BST
(Bus status)
COMM
(I/O Data communication)
BF
(Bus Fail)
The CS1/CJ1W-PRM21 PROFIBUS Master Units are each fitted with seven
LEDs to indicate the operational mode and status of the Unit and the PROFI-
BUS network
CS1W-PRM21
PRM21
RUN RUN
ERC ERC ERH ERH
BST BST PRM PRM
BF BF COMM COMM
Colour Status
Green Not lit • Startup test failed, Unit not operational.
• Operation stopped, due to a fatal error.
Lit Initialization successful, Unit is in normal operation.
Red Not lit Unit is in normal operation.
Lit One of the following errors occurred:
• Startup error.
• Non-volatile memory error (checksum failed, write-verify failed).
• Invalid PROFIBUS parameter configuration setting.
• Fatal error in program execution.
Red Not lit PLC CPU in normal operation.
Lit One of the following errors occurred:
• PLC CPU Bus error.
• Cyclic Refresh Monitor Time-out.
• Routing table error.
Green Not lit PROFIBUS Parameter configuration is not available or incorrect.
Flashing PROFIBUS Parameter configuration is being transferred to the Unit
and is not yet available.
Lit PROFIBUS Parameter configuration is correct, and operational.
Green Not lit The PROFIBUS Master Unit is in OFFLINE or STOP mode.
Flashing The PROFIBUS Master Unit is in CLEAR mode.
Lit The PROFIBUS Master Unit is in OPERATE mode.
Green Not lit No PROFIBUS data exchange with any of the allocated slaves.
Flashing Fatal error occurred (ERC LED is ON). Unit initialization failed.
Lit PROFIBUS data exchange ongoing with at least one allocated slave.
Red Not lit No PROFIBUS communication errors occurred.
Flashing At least one allocated slave is not in data exchange with the Unit.
An error occurred in the PROFIBUS interface of the Unit (see section 7-
Lit
2 Troubleshooting Using LED Indicators).
Note Unless otherwise specified, the frequency of a flashing LED is 1 Hz (50% duty
cycle).
CJ1W-PRM21
PRM21
RUN ERC
CS CS
ERH
Meaning
Section 2-1
PRM COMM
BST BF
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