Gasboy CFN Series Diagnostic Manual - Manual (Page 27)

0021 2-1
Section 2
SITE CONTROLLER I
DESCRIPTION
The site controller is the heart of the CFN system at the fueling site. It controls and allows
interaction between all your automated fueling equipment, including electronic pumps, pump
control devices, and terminals that are activated by a customer. All transaction and system data
is stored in the battery-backed RAM of this unit. It uses advanced microprocessor technology and
incorporates multiple hardware and software safeguards. A built-in keyswitch can be used to limit
access to specified commands.
The Site Controller I contains two RS-232 ports. The local port is used for communication to a
data terminal (logger). The remote port is used for communication through a modem or can be
directly connected to a Site Controller II, or a computer.
Two RS-485 ports are provided for communication with other CFN devices at the fueling site.
One of these ports connects to the CFN RS-485 junction box. The second port connects to the
postpay-prepay console.
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