Siemens ST950 - Page 45

Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Security classification
Unrestricted
Page
45 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
Cabinet Alarm LED Drive (5,6) – This output allows an external LED indicator to be
installed to indicate the cabinet alarm state. This output is current limited to 33mA
under short circuit conditions.
Door Switch (7,8) – This input allows an external switch to be used to connect a
cabinet door switch. (switch closed = door closed) If either this input or the standard
manual panel indicate door closed the controller door state will be closed.
Reset fault log button (9,10) – This input allows an external push button to be used
to reset major faults in the fault log in the same manner as RFL=1 would do from
the handset.
Bottom connector – Serial port used to connect an optional GPS unit (used to
maintain the clock).
8
Table 3 - Double Stacked 10W IDC- Top: Modem Power + Monitors, Bottom:
EFC Modem
Location
Pin
Function
Top
1
Modem +5V DC fused output from MDU/LPU (not battery
backed)
2
Connected to pin 1 above
3
Modem 0V DC output (+5V return)
4
Connected to pin 3 above
5
Isolated Shutdown O/P +
6
Isolated Shutdown O/P -
7
External supply monitor signal (digital)
8
External supply monitor signal return (0V)
9
External supply monitor signal (analog)
10
External supply monitor signal return (0V)
Bottom
11
RS232 DCD (Input)
12
RS232 DSR (Input)
13
RS232 RxD (Input)
14
RS232 RTS (Output)
15
RS232 TxD (Output)
16
RS232 CTS (Input)
17
RS232 DTR (Output)
18
RS232 RI (Input)
19
0V
20
Not Used