Chapter 2. Installation
GFK-2571N
May 2018
43
2.8
PNC001 LED Behavior
2.8.1
Power-up LED Patterns
At power-up, the LEDs show the blink patterns described below. The LEDs also blink diagnostic patterns for
certain operating errors and for module identification. See Chapter 5
for a description of those
special blink patterns.
Step
LED/Blink pattern
Description
Figure 31: PNC001-Bxxx
Front View showing LEDs
1
All LEDs OFF
Normal operation
1.1
ACTIVE
LED solid green
(PNC001-Bxxx only)
Normal operation
1.2
CONFIG
LED solid green
(PNC001-Bxxx only)
Normal operation
2
STATUS
LED solid green
Normal operation
OK
LED blinks Amber with
special blink code
Fatal Initialization or Diagnostics Failure,
Hardware Module Identity Information not
available
OK, LAN
, and
STATUS
LEDs
blink green in unison (1 Hz)
Invalid firmware detected. Module is waiting
for firmware update. Blink pattern continues
during firmware update.
3
LAN
and
STATUS
LED solid
green (PNC001-Ax only)
Normal operation
4
LAN
LED solid green
Normal operation
LAN
and
STATUS
LED blink
green (1 Hz)
Update of module firmware. After the
automatic update completes, the LEDs blink
Amber and the module resets, which restarts
the power-up process.
5
OK
LED solid green
Normal operation. Power up completed and
backplane communications established.
OK
LED blinks green (1 Hz)
Module power-up completed, but
communication not yet established over the
RX3i backplane.
Note:
Under certain ambient operating temperatures, the PROFINET Controller may momentarily display
the overtemperature pattern during power up, while it is calibrating its thermal protection functions.
This indication may be ignored, and no overtemperature entry is added to the Local Log table, the
Controller Fault Table or I/O Fault Table.
For details, see Special LED Blink Patterns in Chapter 5
