Gasboy TopKAT Fuel Management System Installation - Manual (Page 39)

MDE-4319E TopKAT™ Fuel Management System Installation Manual · August 2008 Page 33
Description TopKAT Master/Satellite
6 – TopKAT Master/Satellite
Description
The TopKAT master/satellite option allows up to eight TopKAT units to be linked together
through a full-duplex RS-485 data loop, with one acting as the master controlling unit. The
master is the only unit that will need to have a data communication link as it will collect all
transactions and maintain the complete database for the entire site. The data communication
ports of the satellite units are disabled. The individual TopKAT units may use the standard
RS-485 loop (9800 pumps) to communicate to their pumps or the mechanical interface. The
interface must be the same for each pump within an individual TopKAT system. However,
both types of pump interfaces may be combined within a master/satellite configuration.
Note: Full-duplex communication requires four wires and is not presently supported in the
9850, as it does not have the necessary communication wires.
There are four possible configurations for the master/satellite:
• All electronic, where the TopKAT system can control up to eight electronic 9800/
ASTRAs and up to seven satellite readers
• All mechanical, where the master TopKAT system controls up to two mechanical hoses
and up to 14 other hoses (two hoses each for up to seven TopKATs)
• Combination, where the master TopKAT system controls two electronic 9800/ASTRAs
and up to 14 mechanical hoses (two hoses each for up to seven TopKATs)
• Mechanical pumps, where the master TopKAT system can control up to eight mechanical
pumps (four hoses per Mechanical PCU, up to two Mechanical PCUs) and up to seven
satellite readers.