Intelligent Detector Backplane Card Leds - Siemens ST950ELV Handbook

GSPI comms
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Figure 23 – Intelligent Detector Backplane (rear view)

4.11.1 Intelligent Detector Backplane Card LEDs

The Intelligent Detector Backplane Card has three tri-colour status LEDs which are
identical to the LEDs on the I/O card as described in section 4.9.1 above. It should
be noted that these LEDs are viewed from above and are seen in reverse order (i.e.
LP3, LP2 and LP1 from left to right). For this reason, the table below shows the
LEDs in the order they are seen.
Watchdog LED
(LP3)
Off
Red
Off
Off
Off
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Version 7
Last Editor manpreet.jeerh
Document Name ST950 ICM Handbook
Copyright © Siemens plc 2020. All Rights Reserved.
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GSPI comms
IN from
Processsor or
Address
previous IDB
IDB Switch
Software Run LED
(LP2)
Yellow
Yellow
Green Steady
Green Flash
Green Flash
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Comms Active LED
(LP1)
Yellow
Yellow
Off
Red
Green Toggle on
Receipt of Message*
Page 54 of 154
Status Issued
Date January 2020
Document No. 667/HE/45950/000
Input 24V DC- /AC
Input 24V DC+ /AC
Output 24V DC- /AC
Output 24V DC+ /AC
Twist and Flat Ribbon
Cable to Loop
Termination Board
State
Processor Reset
Watchdog Failure
Performing Start Up
Awaiting Start
Communications
Active