Installation Owner manual

SYSTEM WIRING Page 7 - 25 7
RS-232 Communication Connectors
Two connectors are provided at the bottom of the Tank Sentinel console for
RS-232 interface as shown in Figure 7-12. Follow the communications setup
instructions contained in the Programming Guide. The pin designations for the
RS-232 connectors are as follows:
CAUTION Peripheral equipment connected to the RS-232 communication
ports must:
1) be U.L. listed,
2) have a serial port conforming to the Electronics Industry
Association (EIA) standard RS-232C, and
3) not be installed over a hazardous location.
CONSOLE RS-232 COMM PORT 1
DB 9 CONNECTOR, FEMALE, DCE
Pin No. Function Input/Output
2 TXA O
3 RXA I
5 Signal GND
7 RTS I
8 CTS O
CONSOLE RS-232 COMM PORT 2
DB 9 CONNECTOR, MALE, DTE
Pin No. Function Input/Output
1DCD I
2 RXA I
3 TXA O
4 DTR O
5 Signal GND