Gasboy CFN Series Diagnostic Manual - Manual (Page 335)

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Section 12
SITE CONTROLLER III
DESCRIPTION
The Site Controller III is the heart of the CFN System at the fueling site. It controls and allows
interaction between all of your automated fueling equipment, including electronic pumps, pump
control devices, card readers, registers, tank monitors, and terminals that are activated by a
customer. It can also be used as a Profit Point POS workstation. The unit uses advanced
microprocessor technology and incorporates multiple hardware and software safeguards.
The Site Controller III is supplied in a PC platform; however the SC III board set is shipped
separately from the PC and must be installed at time of startup.
The SC III PC comes standard with a hard disk drive for mass storage of data, a 3-1/2" disk drive
and a CD-ROM drive. The Site Controller III provides the following ports:
● Ports 1, 4, 5, and 6 are local RS-232 ports. They can accept a modem, printer or other
device.
● Port 3 is a dual Tokheim port. It is the only port that can be used for a Tokheim interface
cable.
● Loop 1 Island port connects to the RS-485 junction box. All Gasboy devices (PCUs, ICRs,
etc.) must connect to this port.
● Loop 2 is an alternate island RS-485 port. The factory setting for this loop is 2-wire for
communication to Tokheim DPT's. For additional information on Tokheim DPT wiring, see
the Pump Interface Manual, C09146.
WARNING: If a 2-wire device, such as a DPT, is connected to a loop that is set for 4-wire,
the site controller will not operate correctly. Four-wire devices on a 2-wire loop
may not communicate with the site controller.
● Loop 3 is the POS high speed port. It is the only port to which a Checkpoint console or Profit
Point can be connected.
In addition to the site controller ports, PC peripherals (monitor, mouse, etc.) are connected per the
manufacturer's instructions. The pages that follow show the ports as installed on a representative
PC (Your actual PC layout may differ), and the site controller board set placement in a PC.