Description of the controllers
107708_en_08 PHOENIX CONTACT 27 / 112
PLC: Controller diagnostics
RUN Green
Controller RUN
status
Off PLCnext runtime system is not ready for operation.
Flashing
(0.5 Hz)
PLCnext runtime system successfully initialized.
The controller is in the READY/STOP state; application pro-
gram is not being processed.
Flashing
(2 Hz)
Controller has been reset to the default status (see Section “Re-
set button” on page 31).
Flashing
(2 Hz)
System watchdog was triggered.
FAIL flashes red with same frequency.
On
PLCnext runtime system successfully initialized and an appli-
cation program is running.
The controller is in the RUN state.
FAIL Red Failure
On
A runtime error has occurred in the application program of the
PLCnext runtime system.
Off
No runtime error has occurred in the application program of the
PLCnext runtime system.
Flashing
(2 Hz)
System watchdog was triggered.
RUN flashes green at the same frequency.
DBG Yellow
Debug mode
(troubleshooting)
On
The PLCnext runtime system/controller is in debug mode, i.e.,
debug mode has been activated in PLCnext Engineer (break-
point(s) set).
The status of the RUN LED is not affected.
BOOT Red
Device firmware
loading status
On Device firmware is faulty.
Flashing
(2 Hz)
Device firmware is being loaded (boot process).
Off Device firmware running.
Table 3-1 Controller diagnostic and status indicators
Desig-
nation
Color Meaning State Description
To Next Page
Loading...
Need help?
General
