Here, you will find a simple vBuilder program and HMI project for test the communication between ACE and HMI.
Inputs are visible on the HMI, and you can switch outputs from the HMI.
Download the files, upload them to the devices, then, test them !
Be sure to select the right COM port in the HMI-Tool and vBuilder softwares
|HMI-Tool: Modbus on COM1, COM2 or USB||vBuilder: Modbus on RS232, RS485 or USB|