Table 3-5: LED Indications on PLC-CPM
Item LED
LED
State/Color
Description
1 Status OFF No Power is applied to CPM.
On/Green The controller is working normally.
On/Red The controller is stopped.
On/Orange The controller is in power-up process.
Blinking Red
@ 1HZ
The controller is running with error.
Blinking Red
@ 0.5HZ
The controller is accessible via online
communication, but no application is
loaded.
Blinking Red
@ 5HZ
IP address is in conflict.
Blink @ 1HZ /
Green &
Orange
The controller is upgrading firmware.
2 Role OFF It is a non-redundant system or;
On/Green The controller is in primary role and the
system is synchronized, or;
On/Orange The controller is in secondary role and
the system is synchronized.
Blinking
Green @ 1HZ
The controller is in primary role and the
system is synchronizing.
Blinking
Orange @
1HZ
The controller is in secondary role and
the system is synchronizing.
Blinking
Green @
0.5HZ
The controller is in primary role and the
system is unsynchronized.
Blink Red @
0.5HZ
The controller is in secondary role and
the system is unsynchronized.
3, 5,
7, 9
Ethernet Port
Speed ( Upper
LED)
Yellow On/Off OFF for 10Base-T; ON for 100Base-TX.
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