Sa-232 Wiring - GE EST iO64 Technical Reference Manual

SA-232 wiring

The optional RS-232 card can be wired to a printer to print system
events or wired to a computer to download to the panel.
Circuit specifications
• Serial communications
Asynchronus communications maximum resistance: 13 Ω
Maximum capacitance: 0.7 µF
• Wire length: 50 feet max.
• Signal voltage: +/- 10 V
• Operating current
Standby/Alarm: 13 mA
Max.: 20 mA
• Printer communication speed: 9600 baud
SA-232 wiring connections
GND (black wire)
RTS (green wire)
TXD (white wire)
RXD (red wire)
Printer wiring
Note: The printer must be configured through programming for
proper operation.
Wiring to a printer:
1. Locate the serial port on the back of the printer.
2. Connect the DB-25 end of the RS-232 cable to the serial port on
the back of the printer.
3. Connect the other end of the RS-232 cable to the RS-232 card.
EST iO64 and iO500 Technical Reference Manual
Chapter 2: Installation and wiring
71