While the physical layer uses current loops, the data layer utilizes standard asynchronous serial parameters. Third-party controllers must configure their UART peripherals to the following strict specifications:
A typical command packet sent from the controller to the pump follows this architecture: While the physical layer uses current loops, the
The Gilbarco Two-Wire protocol is a proprietary communication standard used to interface fuel dispensers with control consoles or point-of-sale (POS) systems. For third-party developers, mastering this protocol requires understanding its physical current-loop layer, the specific baud rates associated with different dispenser models, and the logical "master-slave" polling structure. and the logical "master-slave" polling structure.