Appendix A. Miscellaneous
Appendix A. Miscellaneous
A.1 Console port pin assignment
The console port on the FMUX04 serves two purposes; it provides the RS-232
communication interface for terminal configuration and also contains one set of relay contacts
for alarm.
Pin Signal
Description Direction Remark
1
2
TD
Transmit Data
IN
Towards FMUX04
3
RD
Receive Data
OUT
From FMUX04
4
NO
Relay Normally open
Closed if power fail
5 SG
Signal
Ground
6 COM
Relay
Common
7
CTS
Clear To Send
OUT
From FMUX04
8
RTS
Request To Send
IN
Towards FMUX04
9
NC
Relay Normally closed
Closed if no alarm
A.2 Alarm Relay Connection Detail
The following are examples of wiring audio or visual alarms to the console/alarm relay DB9F
connector.
Contact Ratings:
1A @ 30VDC
0.5A @ 125VAC
0.25A @ 250VAC
500VAC Max.
56
Summary of Contents for FMUX04
Page 2: ......
Page 16: ...Chapter 1 Introduction 16 This page left blank intentionally ...
Page 61: ......