Displays, Connections and Controls
26
Operating Manual XCx 300 / 500 / 540 Version 09/08
4.2
LED Displays
XCx 300
LED-designation
Colöor
Status
Meaning
L1 / L2 / L3 / L4
unused (free for expansion module)
CF
Compact Flash
green
ON
Memory access
red
ON
Access error
ETH
EtherNet network
green
Flashing
Network access
red
ON
Network error
XRIO
RIO direct connection
green
ON
Operational
Flashing
Pre-Operational
yellow
ON
Bus error
red
ON
Frame error
RUN/ERROR
CPU status
OFF
No operating voltage
green
ON
Operating voltage ok, no error
red
ON
CPU not running (watchdog)
Flashing
CPU has detected a fatal error
PLC RUN
SPS status
OFF
PLC stop
yellow
ON
PLC running
Flashing
PLC running, but outputs shut down
(ready-for-operation relay released)
I/O 0
I/O 1
Combination I/O
yellow
OFF
Input / output not set
ON
Input / output set
Error messages are stored in the active error buffer and in the error
logbook. Error messages include error numbers and additional
informations.
Use the <Ctrl+?> keys in the SCHLEICHER-Dialog software to read
the active error buffer and the log book.