Gilbarco Dispenser Twowire Protocol For Third Party Pump Controllers New | Mobile EXTENDED |

(needed for development):

To understand the "new," you must first understand the "old." The Gilbarco two-wire system (often referred to as the G-Site or Bi-directional asynchronous protocol) is a serial communication standard that runs over a simple, unshielded twisted pair of copper wires. (needed for development): To understand the "new," you

. It is characterized by its efficiency, using a minimal number of characters to speed up communication across a single pair of wires. www.mchip.net Technical Specifications These devices sit between your third-party pump controller

This article dives deep into what the Gilbarcotwo-wire protocol is, why it is experiencing a renaissance for third-party integrators, and how your business can benefit from this new level of control. traditionally at 45 mA

The real "new" breakthrough is hardware. Companies like , Dover Fueling Solutions (Wayne) , and specialized OEMs (such as Tominaga in Japan or EASI in the US) have released next-gen protocol converters. These devices sit between your third-party pump controller and the Gilbarco two-wire loop, performing real-time translation from standard ASCII commands (e.g., "Pump 3, preset 20 liters") into the exact bit-banging current loop required by Gilbarco.

Understanding the Gilbarco Dispenser Two-Wire Protocol The is a proprietary communication standard used to interface Gilbarco fuel dispensers with Point-of-Sale (POS) systems and third-party pump controllers . It operates on a current loop principle, traditionally at 45 mA , although variants like 20 mA or 60 mA may be encountered depending on the specific hardware. Core Technical Specifications

: The protocol can handle volume totals in 6-digit formats, often requiring flags to be set if the pump delivers data with specific decimal placements. 4. Implementation for Third-Party Controllers