Siemens ST950 - LSLS Status Leds

Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Security classification
Unrestricted
Page
59 of 154
Version
7
Status
Issued
Last Editor
manpreet.jeerh
Date
January 2020
Document Name
ST950 ICM Handbook
Document No.
667/HE/45950/000
Copyright © Siemens plc 2020. All Rights Reserved. Mobility is a division of Siemens Plc
Figure 26 – LSLS Card Addressing
4.13.3 LSLS Status LEDs
The LSLS has two tri-colour status LEDs as shown in Figure 25 which are used to
indicate various conditions as follows. Conditions other than those identified should
not occur and so can be treated as faults.
LED A
LED B
Meaning
Possible Cause
Yellow
Yellow
Reset
Start up (if brief)
Comms lost to main processor (if brief)
Hardware fault (otherwise)
Red
continuous
any
Major fault
The LSLS has detected a major fault
Alternate green
Peripheral
download
LSLS powered up with peripheral
download link present
Off
Red flash
Awaiting
start
LSLS powered up
Comms lost to main processor
Off
Yellow flash
Downloading
Main processor is downloading to LSLS
Off
Green flash
Normal
operation
Download complete and comms with
main processor established.
Table 10 – LSLS LEDs
Address set to 1