Good Day All, I'm working on an alarm system program that an integrator did several years ago. The PLC is a S7-1200, and I'm using TIA Portal 15.1. The program uses BACnet to comm with a Trane chiller system. I need to make an input change (change input from one remote rack to another one) in another unrelated portion of the program. When I connect to the system, it come up with a pop up saying I'm missing the BACnet module and programming may be limited. Will it cause an issue if I make my input change and download software to the PLC, even thought I don't have the BACnet module for Portal?