Siemens ST950 - Page 43

Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Security classification
Unrestricted
Page
43 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
Solid on
Programming complete, power cycle required
SYS – System (green)
Flashes to indicate status
Slow flash
Normal operation
Medium flash
Normal operation, Fault present
Very fast flash
Restricted mode
COM – Communications (green)
On
Under UTC control, pulses off indicate receipt of messages
Off
Not under UTC control, pulses on indicate receipt of messages
BSY – Busy (red)
Flashes to indicate the system is busy performing an operation that must not be interrupted,
for example start up, upgrade, USB "memory stick" style interface is busy. Do not remove
USB device or switch off the controller while this LED is flashing.
BEHIND HANDSET CONNECTOR
The pair of multicolour LEDs behind the handset connector are as shown below
(viewed from the front of the CPU Card).
The function of each LED is described below.
SEC – SEC Status
Green flash, long on, short off
Awaiting start request from Primary
Green flash, equal on and off
Normal operation
Green flash, short on, long off
Shutdown
Red
SEC requested controller shutdown
FF – Fail Flash Status
Green flash, equal on and off
Normal operation
SEC FF