Gilbarco Dispenser Two-wire Protocol For Third Party Pump Controllers

Implementing the Gilbarco dispenser two-wire protocol requires careful configuration and testing. Here are some steps to consider:

Look at the dispenser logic board. If it has a "Comm Board" with jumpers J1–J4, it’s two-wire. If it has an RS-485 chip (75176), it may be "Gilbarco RS-485" (different protocol). Confirm with model number.

: Third-party interfaces must provide optical isolation to protect the controller from electrical interference and power surges common in forecourt environments. Communication Parameters

The Gilbarco dispenser two-wire protocol has various applications in the fueling industry: