Installation & Connections
Overview
076R174-000
SpectraComm SDT
2-7
Issue 4
Installation and Operation Manual
Craft Port / Contact Sense Pinouts
(Interface “D” in
The SC-SDT Craft (or console) port is provided by the RS-232-compatible DB25 connector at the
rear shelf slot. This interface supports 9600bps asynchronous data and provides terminal interface
control of the unit by direct connection to a local VT100-compatible ASCII terminal. Connection
to the Craft port requires a straight-thru RS232 DB25 cable.
The Contact Sense port is also provided by the same DB-25 connector at the rear shelf slot. This
interface can connect up to eight contact relays for sensing user-defined contact alarms as Normally
Open (NO) or Normally Closed (NC). The table below describes the pinouts for the craft function
and the contact sense function, both of which can operate simultaneously at this interface.
Note
For more information on Contact Sense, refer to Chapter 5, Additional Features .
Table 2-4
Craft and Contact Port Pinouts
Function
DB25
Pin
Signal
Direction
Description
Craft
2
Craft In
To SC-SDT
Transmit Data - Supervisory data from the terminal
3
Craft Out
From SC-SDT
Receive Data - Supervisory data to the terminal
7
Craft GND
-
Signal ground for craft interface
Contact
Sense
5
Out 1 GND
-
Output GND for contact relay #1
18
In 1
To SC-SDT
Input signal from contact relay #1
6
Out 2 GND
-
Output GND for contact relay #2
19
In 2
To SC-SDT
Input signal from contact relay #2
8
Out 3 GND
-
Output GND for contact relay #3
20
In 3
To SC-SDT
Input signal from contact relay #3
9
Out 4 GND
-
Output GND for contact relay #4
21
In 4
To SC-SDT
Input signal from contact relay #4
10
Out 5 GND
-
Output GND for contact relay #5
22
In 5
To SC-SDT
Input signal from contact relay #5
11
Out 6 GND
-
Output GND for contact relay #6
23
In 6
To SC-SDT
Input signal from contact relay #6
12
Out 7 GND
-
Output GND for contact relay #7
24
In 7
To SC-SDT
Input signal from contact relay #7
13
Out 8 GND
-
Output GND for contact relay #8
25
In 8
To SC-SDT
Input signal from contact relay #8
Output
Contacts
(Future Use)
1
Out 1 Common
From SC-SDT
Relay contact common
14
Out 1 NO
From SC-SDT
Contact relay output, Normally Open
15
Out 1 NC
From SC-SDT
Contact relay output, Normally Closed
4
Out 2 Common
From SC-SDT
Relay contact common
16
Out 2 NO
From SC-SDT
Contact relay output, Normally Open
17
Out 2 NC
From SC-SDT
Contact relay output, Normally Closed
Summary of Contents for SpectraComm SDT
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