X20 system modules • X20 interface module communication • X20IF2772
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X20 system User's Manual 3.10
4.23.26.4 LED status indicators
Figure
LED
Color
Status
Description
Green
On
Interface module active
STATUS
Red
On
CPU starting up
TxD CAN 1
Yellow
On
The module is sending data via the CAN bus interface (IF1)
TxD CAN 2
Yellow
On
The module is sending data via the CAN bus interface (IF2)
TERM CAN 1
Yellow
On
The integrated terminating resistor for the CAN bus interface (IF1) is
turned on
TERM CAN 2
Yellow
On
The integrated terminating resistor for the CAN bus interface (IF2) is
turned on
Table 657: LED status indicators
4.23.26.5 Operating and connection elements
LED status indicators
IF1 - CAN bus
Node number switches
2 terminating resistor switches
on the bottom of the module
IF2 - CAN bus
Figure 605: Operating and connection elements
4.23.26.6 CAN bus node number
The node number for the CAN bus interfaces is set with the two hex switches.
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