LED
LED display
Cause
U
L
LED is off
24 V voltage errors:
●
24 V supply voltage is not connected
●
24 V supply voltage is connected with reverse po-
larity
Module-specific displays:
RT Ethernet
S
LED is off
No data is sent
L
LED is off
No connection present
Profibus
Stat
LED is acyclically on
Module not configured
BF
LED is permanently on
No connection
LED flashes
Slave diagnostics
Sercos
S
LED is off
No data is sent
L
LED is off
No connection present
CAN
PW
LED is off
Voltage error of the CAN voltage
ERR
LED is red
Bus error, refer to the CANopen standard "CIA 303
Part 3: Indicator Specification"
RUN
LED is off
Communication error, refer to the CANopen standard
"CIA 303 Part 3: Indicator Specification"
Tab. 13-1: LED displays of the extension modules
13.1 Error cases after commissioning the CAN module
The following errors can be displayed when commissioning the CAN module, al-
so refer to
chapter 11 "Commissioning" on page 24
1. Switch off the 24 V voltage supply for the XMxx control and the voltage
supply of the extension modules.
2. Keep the “Reset” pushbutton "SF2" at the Xmxx control pressed and switch
on the 24 V voltage supply. If either the display LED "DIA3" or the display
LED "DIA4" is on at the XMxx control, release the “Reset” pushbutton
"SF2".
3. If the display LED "ON" is on at the control XMxx, the error is eliminated.
If the display LED "ON" is
not
on at the control XMxx, press the “Fallback”
pushbutton of the CAN module. Proceed the following step.
4. Initiate the "Fallback mode" for the extension modules, whose display LED
"ON"
is not on
:
Extension Modules Profibus, RT-
Ethernet, Sercos, CAN
Bosch Rexroth AG
Error causes and troubleshooting
DOK-CONTRL-XFE**EXTMOD-IT04-EN-P
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