I/O Card Status Leds; I/O Card Rotary Address Switch - Siemens ST950ELV Handbook

4.9.1

I/O Card Status LEDs

The I/O card has three tri-colour status LEDs as shown in
Figure 21, which are used to indicate various conditions, as follows:
Comms Active LED
(LP1)
Yellow
Yellow
Off
Red
Green Toggle on
Receipt of Message*
Off
(As above depending
on state)
* - May flash so fast that it looks like Green Steady.
Conditions other than those identified above should not occur and can be treated as
faults.
4.9.2

I/O Card Rotary Address Switch

This screwdriver-adjustable switch is located on the I/O card(s) as shown in
Figure 21 and is set up for the card address (before the controller is powered up) in
accordance with the appropriate Works Specification. The valid address range is 1
through 15 (where A to F denote 10 to 15 respectively). Address 0 is the default
address switch position for spare cards.
Security classification Unrestricted
Version 7
Last Editor manpreet.jeerh
Document Name ST950 ICM Handbook
Copyright © Siemens plc 2020. All Rights Reserved.
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Software Run LED
(LP2)
Yellow
Yellow
Green Steady
Green Flash
Green Flash
Green / Red
Alternating
Red Flash
Table 6 – I/O Card LEDs
The address range is shared with the Intelligent Detector Backplane
cards and must be unique.
Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Watchdog LED
(LP3)
Off
Red
Off
Off
Off
Off
Off
Page
Status
Date
Document No.
Mobility is a division of Siemens Plc
State
Processor Reset
Watchdog Failure
Performing Start Up
Awaiting Start
Communications
Active
Invalid Address
Major Fault Detected
51 of 154
Issued
January 2020
667/HE/45950/000