Gasboy 1000 Series Fuel Management System Installation - Manual (Page 55)

MDE-4344A Series 1000 Fuel Management System Installation Manual · November 2008 Page 51
Requirements Communication Wiring
5 – Communication Wiring
Requirements
The Series 1000 System has two ports for communication from the system to peripheral
devices such as printer terminals and/or modems. These devices should be located in a
controlled office-type environment. Each port can be individually set up for use with a
terminal or modem and for RS-232 or RS-422 communication. In cases where a Series 1000
internal modem is used, Port two is not available for external communication wiring.
The Series 1000 offers an optional auxiliary port PCB (2 ports) used for communication from
a tank monitor through the Series 1000 System to the peripheral device attached to Port 1 or
Port 2. The auxiliary ports may be set up for RS-232 or RS-422 communication.
RS-232 wiring can be used for direct connection to an EIA RS-232 compatible peripheral
device. The distance of the RS-232 wiring is limited to 100 feet and must be in a metal conduit
separate from any AC wires. The remote end of the wire can be terminated with either an RS-
232D connector or a Gasboy RS-232 termination box.
RS-422 wiring requires the use of a Gasboy Short Haul Modem and the appropriate
interconnect cable. RS-422 wiring is capable of running up to 1500 feet. It can be used for
distances under 100 feet in place of RS-232 wiring. Other advantages of RS-422 are its high
noise immunity and the exceptions allowed to normal conduit requirements. Refer to
“Short
Haul Modem - RS-422” on page 58 .
Installation Notes
• All wiring is to be installed and used in accordance with local building/fire codes, all
Federal, State, and Local codes, the National Electrical Code (NFPA 70), NFPA 30, and
the Automotive and Marine Service Station Code (NFPA 30A) codes and regulations.
Canadian users must also comply with the Canadian Electrical Code.
• All peripheral equipment connected to the RS-232 ports must be UL-listed, have an
Electronics Industry Association (EIA) standard RS-232 communications protocol and not
be installed over a hazardous location.