Gasboy 1000 Series Technical Reference Manual - Manual (Page 139)

03/07/03 6-1
Section 6
COMMUNICATIONS
COMMUNICATION OVERVIEW
Data Terminal The Series 1000 System has two asynchronous communication ports are
provided for connection to a data terminal or personal computer. The connection
may be made by direct cable, via a short haul modem, or via a telephone modem.
An optional auxiliary port PCB (2 ports) can be used for communication from a
tank monitor through the Series 1000 System to the peripheral device attached to
Port 1 or Port 2. Each port may be set up for RS-232 or RS-422 communication.
Modems The optional GASBOY internal 300/1200 phone modem (GASBOY P/N C05739)
requires the installation of a phone line directly to the fueling island, and a phone
jack mounted in the Series 1000 pedestal. An external phone modem (P/Ns
C01533) allows for connection to a phone jack which is installed remotely from
the fueling island. A communication cable is required from the external modem to
the system’s communication port. In either case, standard voice grade, dial-up
phone lines are used.
Comm Ports Communication Port 1 is normally used for directly connecting PC or data terminal
located at the site. Port 1 allows access to the Direct Printout Mode and
Command Mode of the system. See Section 1, Communications Options and
Operating Modes, for more on the two system modes.
Port 2 is commonly used for connecting via a phone modem to a data terminal or
computer remote from the site. Port 2 only allows access to the Command Mode.
Both ports cannot be used for communication to the system simultaneously.
The auxiliary port PCB is used for communication with a tank monitoring system
and also the receipt printer (if so equipped). If you ordered your system with a
receipt printer or tank monitoring system, these ports are already present. No
additional wiring is needed for the receipt printer.
Baud Rate
Settings
Communication ports 1 and 2 can be set for 300, 600, 1200, 2400, 4800, or 9600
baud by a hardware jumper. The auxiliary ports can be set for 300, 1200, or 9600
baud. Each port can also be individually set for RS-232 or RS-422
communications. The type of communication used depends upon the distance of
the device to be connected, as well as, certain conduit considerations. When
sending data to the Series 1000 system from a computer or tank monitoring
system, do not exceed 1200 baud. When sent at higher baud rates, data buffers
may overflow. Overflow errors will terminate the connection.