: Used as an intermediary to handle low-level pump protocols, allowing the main POS to communicate via simpler RS-485 or Ethernet commands.
Since the protocol is proprietary, developers of POS and FCC systems often use specialized hardware to facilitate integration: : Used as an intermediary to handle low-level
Modern trends favor IP-based forecourt protocols like or Wayne’s iX , but as long as legacy Gilbarco dispensers continue pumping fuel at corner stores, truck stops, and marinas, the humble two-wire current loop will remain a critical interface. Master its timing, its 7E1 serial framing, and its XOR checksum, and you can make any dispenser dance to the tune of your own controller. its 7E1 serial framing