Installation manual

SAFEPATH Manual Sheet 37 of 78
Rev. C April 1999
Figure 12.
Dry Contact Input Wiring
Pin
1 ** Chassis Ground
2 TD (Transmit Date)
3 RD (Receive Data)
4 * RTS (Request To Send)
5 * CTS (Clear To Send)
6 * DSR (Data Set Ready)
7 COM (Signal Ground)
8 * DCD (Data Carrier Detect)
20 * DTR (Data Terminal Ready)
22 * RI (Ring Indicator)
* Optional (Not used with standard protocol)
** Not Connected Internally to Signal Ground
Figure 13.
RS-232 Port Pin Out