X20 system modules • X20 interface module communication • X20IF1043-1
X20 system User's Manual 3.10
1781
4.23.5.4 LED status indicators
Figure
LED
Color
Status
Description
Green/red
Off
No power to module
Green
On
PCI bus communication in progress
Blinking
Error when booting
READY/RUN
Red
On
Communication on the PCI bus has not yet been started
Off
Module executes a reset
Green blinking with
double pulse
Red blinking with dou-
ble pulse
CANopen communication disrupted. This may be due to one of the fol-
lowing reasons:
•
The CAN bus cable is broken or the CAN bus controller is in "Bus
off" mode
•
The module is in PREOPERATIONAL mode
•
CANopen communication was stopped (the module is in
STOPPED mode)
Green/red
Green blinking
Red blinking with dou-
ble pulse
CANopen communication was stopped by the master
Blinking
Communication is being started (module is being initialized)
ERR/RUN
Green
On
Communication is ready
TxD
Yellow
Flickering or on
Module sending data via the CANopen interface
TERM
Yellow
On
Terminating resistor integrated in the module switched on
4.23.5.5 Operating and connection elements
LED status indicators
IF1 - CANopen
Terminating resistor switch
on the bottom of the module
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