Gilbarco Dispenser Twowire Protocol For Third Party Pump Controllers New Direct

A third-party controller from a company like or OPW Fuel Management can directly talk to Gilbarco dispensers via the two-wire protocol. The controller validates a fleet card, issues a preset for 100 gallons over two-wire, and reads the final volume—no Gilbarco POS required.

: Uses a 12V current loop interface, often requiring specialized converters (like the A third-party controller from a company like or

The protocol follows a architecture. The pump controller (Master) initiates all communication by polling the dispensers (Slaves). Every unit on the loop receives the data, but only the specific unit addressed responds, while others ignore the message. Interface Requirements for Third-Party Systems The pump controller (Master) initiates all communication by

If you’re developing a third-party pump controller or an automation system for a forecourt, you’ll eventually run into the . While it is a proprietary standard, it remains the backbone of communication for thousands of dispensers worldwide. 1. Hardware Fundamentals: The 45mA Current Loop While it is a proprietary standard, it remains