Gilbarco Dispenser Twowire Protocol For Third Party Pump Controllers New File

To prevent equipment damage, third-party interfaces must use optical isolation between the dispenser data lines and the controller. Active vs. Passive:

Gilbarco Two Wire Pump Protocol - TOAZ - INFO | PDF - Scribd

The "Two-Wire" interface is a proprietary serial communication protocol developed by Gilbarco (now part of Vontier/Dover Fueling Solutions). It allows a single Forecourt Controller to manage multiple dispensers (pumps) over a daisy-chain or multi-drop cabling infrastructure.

Use Gilbarco’s IDX (Intelligent Dispenser Interface) or TLS-450 serial gateway, which converts two-wire to modern protocols (TCP/IP, MQTT) without dealing with current-loop hardware.