Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-MMA21 - Manual (Page 87)

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Wiring Section 3-2
3-2-2 RS-232C Port Wiring
Connector Pin Arrangement
Note Do not connect the 5-V power supply on pin number 6 of the RS-232C port to
any devices other than a NT-AL0001 Converter. Doing so may damage the
external device and the Coordinator Module.
Connection Methods
1:1 Connections with
Personal Computers Host Link Serial Communications Mode
Pin No. Signal Name Direction
1 FG Protection earth ---
2 SD (TXD) Send data Output
3 RD (RXD) Receive data Input
4 RS (RTS) Request to send Output
5 CS (CTS) Clear to send Input
6 5V Power supply ---
7 DR (DSR) Data set ready Input
8 ER (DTR) Data terminal ready Output
9 SG (0V) Signal ground ---
Connector hood FG Protection earth ---
5
1
9
6
1
2
3
4
5
6
7
8
9 CD
RD
SD
ER
SG
DR
RS
CS
CI
Coordinator Module
1
2
3
4
5
6
7
8
9 FG
SD
RD
RS
CS
5V
DR
ER
SG
IBM PC/AT or compatible
RS-232C
interface
Signal Signal
RS-232C
interface
9-pin D-sub
connector (male) 9-pin D-sub
connector (female)
Pin
No. Pin
No.