User manual

6 Detailed descriptions of I/O modules | Communication module UR20-1COM-SAI-PRO
396 1432790000/08/12.2015Manual u-remote
GW-SAI
Module status LED
Green: Communication on system bus
Red: Collective error diagnostic
3.1
Yellow ashing (0.5Hz): Subbus communication is being initialised
Yellow: Subbus communication OK
3.2 Red: Supply voltage error
3.3 Green: Supply voltage OK
3.4 Red: Subbus communication error
LEDindicatorsUR20-1COM-SAI-PRO,errormessagesseeChapter13
Data
FE
FE
FE
FE
Data +
GND
+24 V DC
Data –
System
bus
U
SYS
U
IN
U
OUT
µC µC
1
2
3
4
FE
GND
J
Block diagram UR20-1COM-SAI-PRO