Sensaphone SCADA 3000 Users manual - Manual (Page 286)

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SCADA 3000 User’s Manual
Pin Description and Data Direction
The pin descriptions and signal direction for each COM port follow:
Figure 3: Com Ports
COm 1 (DCe)
Pin Description Direction
1 DCD Data Carrier Detect Output
2 RD
Receive Data Output
3 TD Transmit Data Input
4 DTR Data Terminal Ready Input
5 SG
Signal Ground
6 DSR Data Set Ready Output
7 RTS Request to Send Input
8 CTS Clear to Send Output
9 N.C. No Connection
COm 2 (DTe)
Pin Description Direction
1 DCD Data Carrier Detect Input
2 RD
Receive Data Input
3 TD Transmit Data Output
4 DTR Data Terminal Ready Output
5 SG
Signal Ground N/A
6 DSR Data Set Ready Input
7 RTS Request to Send Output
8 CTS Clear to Send Input
9 N.C. No Connection