116
5.1 Appearance and Parts Description
(c) Linux and Overlay File System
LED Behavior
Controller State
RDY
(gree
- n)
Resvd
(yel-
low)
RN
(gree-
n)
ER
(red)
IO ER
(red)
IO
DIAG
(red)
PN-C
ER
(red)
PN-D
ER
(red
SD
(yel-
low)
EC
RN
(gree-
n)
EC
ER
(red)
Not lit
Not lit
Not lit
Flash-
ing
red
0.5 Hz
Not lit
Not lit
Not lit
Not lit
Not lit
Not lit
Not lit
PLCnext runtime isn't loaded
or it has shut down.
Not lit
Not lit
Not lit
Flash-
ing
red
2 Hz
interval
Not lit
Not lit
Not lit
Not lit
Flash-
ing
yellow
2 Hz
interval
Not lit
Not lit
Error mounting SD-card
Not lit
Not lit
Not lit
Flash-
ing
red
2 Hz
interval
Not lit
Not lit
Not lit
Not lit
Flash-
ing
yellow
1 Hz
interval
Not lit
Not lit
Error SD-card certificate
Not lit
Not lit
Not lit
Flash-
ing
red
2 Hz
Not lit
Not lit
Not lit
Not lit
Not lit
Not lit
Not lit
Error out of flash memory
Flash-
ing
green
2 Hz
inter- val
ot li
Not lit
Not lit
Not
lit
Not lit
Not lit
ot li
ot li
ot li
ot li
PLC is loading FW
ot li
ot li
Not lit
Flash-
ing
red
1 Hz
Flash-
ing
red
1 Hz
Flash-
ing red
1 Hz
interva
Flash-
ing red
1 Hz
interva
Flash-
ing red
1 Hz
interval
ot li
ot li
ot li
Power cycle of the PLC
required
Lit
ot li
Not lit
Not lit
Not
lit
Not lit
Not lit
ot li
ot li
ot lit
ot li
PLCnext runtime system
suc- cessfully initialized.
The controller is in the
READY/STOP/HALT state;
user application program is
not being processed.
Lit
ot li
Flash-
ing
green
0.2sO-
N/1s
Not lit
Not
lit
Not lit
Not lit
ot li
ot li
ot li
ot li
The controller is in the HALT
state; user application program
is not being processed.
Lit
ot li
Not lit
Flash-
ing
red
1 Hz
Not
lit
Not lit
Not lit
ot li
ot li
ot li
ot li
System watchdog was trig-
gered and the controller has
rebooted.
Lit
ot li
Lit
Not lit
Not
lit
Not lit
Not lit
ot li
ot li
ot li
ot li
The controller is in the
RUN state.
o erro
has occurred.
Lit
ot li
Not lit
Lit
Not
lit
Not lit
Not lit
ot li
ot li
ot li
ot li
The controller is in the PLC
state READY/STOP with
error.