Hardware-Installation
2.2 LED-Assignment
Figure 3:
Position of the LEDs in the front panel
LED
Colour
Function
Indication
Description
LED name
in
schematic
diagram
F
yellow
Identification
off
no request of the SIMATIC-Manager for
identification of the unit
LED1A
blinking
request of the SIMATIC-Manager for
identification of the unit
E
red
PROFINET IO
link status
off
valid PROFINET IO connection exists
LED1B
on
no valid PROFINET IO connection
P
green
Firmware
booted
off
firmware not yet booted.
LED1C
on
firmware booted.
C
green
CAN bus
status
off
no power supply
LED1D
1x short flash
CAN Error (morse code "E")
3x short flash
CAN Off (morse code "O")
short-long-long
CAN Warning (morse code "W")
on
CAN bus OK
Table 1:
Indication of the LEDs
CAN-PN
Hardware Manual • Doc. No.: C.2920.21 / Rev. 1.4
Page 11 of 38
