Components - Omron SYSMAC CS Series Operation Manual

CPU Units
3-1-2

Components

10. Peripheral port
9. RS-232C port
8. Inner Board connector compartment
Indicators
Indicator Color
RUN Green
ERR/ALM Red
INH Orange
BKUP (CS1- Orange
H CPU Units
only)
PRPHL Orange
A CS1 CPU Unit is shown above.
The following table describes the LED indicators located on the front panel of
the CPU Units.
Status
ON PLC is operating normally in MONITOR or RUN mode.
Flashing System download mode error or DIP switch settings error.
OFF PLC has stopped operating while in PROGRAM mode, or has stopped operating
due to a fatal error, or is downloading data from the system.
ON A fatal error has occurred (including FALS instruction execution), or a hardware
error (watchdog timer error) has occurred.
The CPU Unit will stop operating, and the outputs from all Output Units will turn
OFF.
Flashing A non-fatal error has occurred (including FAL instruction execution)
The CPU Unit will continue operating.
OFF CPU Unit is operating normally.
ON Output OFF Bit (A50015) has been turned ON. The outputs from all Output Units
will turn OFF.
OFF Output OFF Bit (A50015) has been turned OFF.
ON User program and parameter area data is being backed up to flash memory in the
CPU Unit or being restored from flash memory.
Note Do not turn OFF the power supply to the PLC while this indicator is lit.
OFF Data is not being written to flash memory.
Flashing CPU Unit is communicating (sending or receiving) via the peripheral port.
OFF CPU Unit is not communicating via the peripheral port.
RUN
ERR/ALM 1. LED indicators
INH
PRPHL/COMM
2. Battery compartment
3. DIP switch (under battery cover)
OPEN
MCPWR BUSY
OPEN
4. Memory Card indicators
PERIPHERAL
5. Memory Card power supply switch
PORT
6. Memory Card eject button
7. Memory Card connector
Meaning
Section 3-1
165