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APPENDIX A
DB-9 (FEMALE) CONNECTOR PIN ASSIGNMENTS
Copyright © 2009.
Patton Electronics
All Rights Reserved.
Pin
Function
1
Major Normally Closed
2
Major Normally Open
3
GND
4
Minor Normally Closed
5
Minor Normally Open
6
Major Common
7
N/C
8
N/C
9
Minor Common
5
4
N.O.
N.C.
9
2
1
N.O.
N.C.
6
Minor Alarm contacts
(showing no-alarm conditon)
Major Alarm contacts
(showing no-alarm conditon)