Can't connect to X20CP3584

Hi Mohamed,

If the PLC is expecting a DHCP server to set its IP address, you’ll need to connect the PLC to a network with a DHCP server. Otherwise, the IP can be statically set in Automation Studio. There is a helpful post from a while back which can help you connect to the PLC if you don’t know its IP address: How to Connect to a PLC with an Unknown IP Address - Share Info & Ideas - B&R Community (

I’d also recommend double checking the status LEDs on the PLC. When the application is running, the R/E light at the top will be solid green. If there is some error, you may have trouble connecting regardless of the set IP address. Your picture shows the top three lights as off, but that may just be the moment you took the picture.