Gasboy Gilbarco Interface Unit - Manual (Page 37)

Gilbarco Interface Unit v2.1 Hardware 29
Gasboy CFN Series
Site controller to interface RS485/422 wiring
The cable to the Gilbarco interface RS485/422 connection is a modular handset connector
cross cable assembly with the transmit and receive pairs reversed, Gasboy part number C04500.
The connections are:
Cable C04500, RS-485/422 junction box to interface
Junction Box Pin Current Loop Interface Pin
1 (Rx+) 3 (Tx+)
2 (Rx-) 4 (Tx-)
3 (Tx+) 1 (Rx+)
4 (Tx-) 2 (Rx-)
This cable runs from an RS485/422 junction box to the interface unit.
Should you need a second interface unit, use a second junction box connected in parallel
with the first, using a short piece of field wiring cable connecting the terminal blocks of the two
junction boxes in parallel. Also connect the external ground terminals together using approved
grounding wire. The second interface box then uses another C04500 cross cable from the second
junction box to its SC II Port.
This drawing shows two connected interface units:
Interface to GSM RS232 wiring
The cable from Gilbarco Interface to GSM is a custom RS232 cable, Gasboy P/N C07248, with
a 25-pin “D” connector on the Interface end and a 9-pin “D” connector for the GSM. The
connections are:
Cable C07248, GSM to interface
GSM Pin Interface Pin
2 (TxD) 3 (RxD)
3 (RxD) 2 (TxD)
7 (GND) 7 (GND)
9 (RESET) 4 (RTS)
5 (CTS)
6 (DSR)
8 (DCD)
20 (DTR)
Do not substitute any other cable or you may damage the GSM.
Site Controller II RS-422
Current Loop
GSM
Gilbarco
J-Box
Interface Box
C05688
To 422 Loop 2
RS422/485 Cable
(C05670)
GSM to Interface Cable
(C07248)
Current Loop 1
D-Box
(from Gilbarco)
CRIND
D-Box
(from Gilbarco)
PUMPS
1-16
CRINDS
1-16
To 422 Loop 2
Gilbarco 422 Cable
(C04500)
(Cable C06691)
(Cable C06326)
Pins 5, 6, 8, and 20 on
Gilbarco Interface end
connected together