Gasboy CFN Series SCII Installation Manual - Manual (Page 9)

CFN Series System
2-2 05/28/03
SITE CONTROLLER II
Description
The Site Controller II 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. The unit uses advanced
microprocessor technology and incorporates multiple hardware and software safeguards. The
Site Controller II comes standard with a hard disk drive and one 3-1/2" disk drive for mass storage
of data and loading in operating system programs. The site controller can be ordered optionally
with two 3-1/2" drives. A built-in keyswitch can be used to limit access to specified commands.
The Site Controller II contains four asynchronous RS-232 ports. Port 0 is used for communication
to a data terminal (logger). Port 2 is used for communication through a modem or to a computer.
Ports 1 and 3 are additional RS-232 ports which can be programmed according to the application.
A logger eliminator (P/N C05593) must be connected to Port 0 when a logger is not used.
Two RS-485 ports are provided for communication with the other CFN devices at the fueling site.
One of these ports connects to the CFN RS-485 junction box. The RS-485 junction box provides
a means for hard-wire connections while incorporating protection circuitry to prevent electrostatic
surges (which may occur on the field wiring) from reaching the site controller. The other RS-485
port connects to the POS console (when available).
Location
The Site Controller II should be located in an office-type environment and in an area protected
from direct contact with the weather. Do not install over a hazardous location. The unit is
designed for an operating temperature range of 35
o F to 110 o F with a relative humidity of 20% to
80% non-condensing. Locating the site controller in a dirty environment may cause premature
failures. The RS-485 junction box must be located within eight feet of the Site Controller. The site
controller should not sit on top of any other components and no other equipment should be placed
on top of the site controller unit.