Technical Bulletin

Modbus RTU On-Board Communications
6 PowerXL DG1 Series VFD MN040010EN—May 2014 www.eaton.com
Modbus RTU On-Board Communications
The PowerXL DG1 product can be controlled via Modbus
®
RTU through the on-board RS-485 terminals.
Figure 6. Connection Diagram
The figure shows a typical arrangement with a host
computer (master) and any number maximum 31 slaves of
frequency inverters. Each frequency inverter has a unique
address in the network. This addressing is executed
individually for each AFD via the communication parameters.
The electrical connection between master and the slaves
connected in parallel are implemented via the serial interface
A-B (A = negative, B = positive) with a shielded RS-485
twisted pair cable.