Dispenser Two-wire Protocol For Third Party Pump — Gilbarco

Standard communication settings vary depending on the dispenser model. Most implementations use a for the physical layer. Highline-2, Euroline, Euro Dimension Highline-111, A.G. Walker Baudrate 4800 bit/sec 5787 bit/sec (Corporate) Databits Parity Stopbits Key Hardware Requirements

While the pump is running, the two-wire protocol sends "Incremental Sales Data" packets every 1/10th of a gallon or liter. The third-party device must sum these increments internally. At the end of the sale, a "Sale Complete" packet is sent with the final totals. Gilbarco Dispenser Two-wire Protocol For Third Party Pump

Furthermore, for sites running upgrades, the two-wire protocol is often used as a fallback for "Pump Status" while the secure PIN pad uses Ethernet. Therefore, understanding this protocol remains essential for any third-party integrator in 2025 and beyond. Don't fight the current loop—harness it.

Without a licensed interpreter chip (historically the "Gilbarco P-01" or "E85" chipset), a third-party pump controller simply sees garbage current fluctuations. This "walled garden" approach has historically locked sites into using Gilbarco’s own POS (Commander/Passport) or a select few licensed partners (like VeriFone’s Ruby/Topaz series). respecting the physical layer requirements

For third-party forecourt equipment manufacturers, understanding this protocol is essential for building interoperable systems. It allows third-party hardware to seamlessly control Gilbarco pumps like the Encore 500 or SK700 without using native Gilbarco consoles. 1. Core Architecture and Physical Layer

While Gilbarco would prefer you buy their entire ecosystem, the reality of the fuel market demands choice. By using a certified protocol converter, respecting the physical layer requirements, and correctly polling the daisy chain, you can successfully control a Gilbarco pump with almost any third-party system. Don't fight the current loop—harness it.