Codesys Example: Outputs - H-Bridge, PWM Mode

This example demonstrates how to setup a matched pair of outputs in H-Bridge mode.

The main relay must be on for the outputs to work.

IoConfig_Globals_Mapping.relayState := TRUE;

Output Configuration - Here are the main settings

• Drive Profile = H-Bridge A on one output and H-Bridge B on second output
• Drive Mode = PWM
• Drive Type = Push-Pull
• Switching Side = High Side
• Paired Pin - select the paired pin for each of the two outputs

Driving the Outputs

• Only command the A- Channel of the h-Bridge pair
• Desired Duty  - Set the desired PWM rate 
• Hbridge Action - Set the direction, 1 = A is high and B is low, 2 = B is high and A is low, 3 = Brake- Both are low, 4 = Float - both are open circuit

Download the Project File