X20 system modules • X20 electronics module communication • X20CS1070
X20 system User's Manual 3.10
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4.18.7.4 LED status indicators
For a description of the various operating modes, see the 2.11.1 "re LEDs" section.
Figure
LED
Color
Status
Description
Off
No power to module
Single flash
RESET mode
Double flash
BOOT mode (during firmware update)
1)
Blinking
PREOPERATIONAL mode
r
Green
On
RUN mode
Off
No power to module or everything OK
Single flash
I/O error occurred
•
CAN bus: Warning, passive or off
•
Buffer overflow
e
Red
On
Error or reset status
e + r
Red on / Green single flash
Invalid firmware
Tx
Yellow
On
The module is sending data via the CAN bus interface
Rx
Yellow
On
The module is receiving data via the CAN bus interface
T
Yellow
On
Terminating resistor integrated in the module switched on
1)
Depending on the configuration, a firmware update can take up to several minutes.
4.18.7.5 Pinout
CAN high
CAN ground
Tx
X2
0
C
S
10
70
r
e
Rx
CAN low
CAN ground
T
4.18.7.6 Terminating resistor
On
Off
Terminating resistor switch
A terminating resistor is integrated in the communication module. It can be turned on and off with a switch on the
bottom of the housing. An active terminating resistor is indicated by the "T" LED.