Gasboy CFN Series Diagnostic Manual - Manual (Page 338)

Site Controller III
12-4 1116
WIRING
All field wiring is made to the unit by plug-in connectors. PC peripherals (monitor, mouse, etc.)
are connected per the manufacturer's instructions. The AC power for the unit comes from the AC
power plug. The RS-485 communication comes through the modular cable that is connected to
the RS-485 junction box. Communication to the Checkpoint console or Profit Point goes through
the RS-485 connector designated loop 3 POS high speed. See the CFN SC III Installation Manual
for detailed wiring instructions.
Connectors
AC Power
Pinout Pin Function Voltage
H AC hot input 115 VAC
N AC neutral input AC neutral
G AC ground input AC ground
RS-232 - General Purpose Communications Port 1
Pinout Pin Function Input/Output
1 DTR – Data terminal ready Output
2 CTS – Clear to send Input
3 TxD – Transmit data Output
4 Signal ground Ground
5 RxD – Receive data Input
6,7,8 Not connected
RS-232 - General Purpose Communications Ports 4, 5, and 6
Pinout Pin Function Input/Output
1 DTR – Data terminal ready Output
2 CTS – Clear to send Input
3 TxD – Transmit data Output
4 Signal ground Ground
5 RxD – Receive data Input
6 DSR – Data set ready Input
7 RTS – Request to send Output
8 DCD – Carrier Detect Input