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Siemens ST950 Plus+ - Page 41

Siemens ST950 Plus+
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ST950 Plus+ User Manual
Page 41 of 176
667/HE/53000/000
Location
Pin
Function
8
Door switch return (0V)
9
Reset fault log button input signal
10
Reset fault log button return (0V)
Bottom
11
+5V Fused (500mA)
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
Not Used
19
0V
20
Not Used
Table 5 : Double Stacked 10W IDC Top: Cabinet Signals Bottom: Aux RS232
Functions:
Signals on/off switch (3,4) This input allows an external switch to be used to control the signals
on/off state. If either the internal (on the manual panel) or external switches are in the ‘on’ position
the signals are requested on. (switch closed = signals on)
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).
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)

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