Gasboy SDI Interface - Manual (Page 8)

SCIII UNITEC Interface 1
Gasboy CFN Series
UNITEC Interface
Overview
The interface from the Gasboy Site Controller III to the Unitec POS4000 Car Wash
Controller uses a device called the Gasboy SDI (Serial Device Interface). This wraps/
unwraps Unitec messages in Gasboy RS-485 loop messages.
The Unitec unit must be equipped with Uni-CAM Mark VII option, version 6.2
hardware (or Unitec specification). Set the Unitec unit for 2400 baud operation on the
serial port. The Unitec car wash protocol we support is called the Uni-CAM protocol.
Please refer to the Unitec documentation for the correct settings.
The SDI uses the SDI Generic Application Program, which allows direct Site
Controller interfaces with serial devices that do not follow the Gasboy RS-485 protocol.
Each kind of device is supported a driver in the Site Controller. The Unitec driver is
supported only with Site Controller III.
Cable Connections
The Gasboy SDI has two RJ handset style connectors on one side to connect to the RS-
485 loop. On the other side there is a DB25S connector which connects to the DB9P
connector on the Car Wash Controller. The corresponding cable uses a DB25P on one
end, and a DB9S on the other. The cable pinout is:
This may be furnished by Gasboy P/N C06010.
The SDI is powered by an external power supply which connects to the SDI box by
way of a circular DIN connector. The power supply plugs into an 110VAC outlet, which
should be on the same phase and referenced to the same ground as the Gasboy Site
Controller.
SITE CONFIGURATION
The Site Controller must contain SDI and Unitec drivers, as shown in the STATUS
command:
Drivers: unitec(000) sdi(001)
The Unitec driver replaces the gate controller driver. TABLE.BIN must have one SDI
entry for each SDI, and in addition, one gate entry.
DB25P DB9S Signal
2 2 TxD
3 3 RxD
7 5 SG
001