Connect to PLC via USB cable
If the controller (usually 1756-L7x ControlLogix and over ) has a USB port that uses a Type B receptacle. The port is USB2.0 compatible and runs at 12 Mbps. to use the USB port of the controller, you must have RSLinx® software, version 2.56 or later, installed on your workstation. Use a USB cable to…
Connect to PLC and Comminucation Interface
To connect to the PLC, you need to know which communication ports the PLC you want to connect has. In this article, I will show you how to connect to a virtual PLC on Emulator. If you do not know the emulator settings or if you are going to work with the PLC emulator for…
Connect a button to the OperShelve tag
OperShelve The alarm instruction only processes the OperShelve tag on transition from cleared to set to prevent unwanted reshelving of the alarm. For example, if an operator presses a push button to shelve the alarm while the ProgUnshelve tag is set, the alarm is not shelved because the ProgUnshelve tag takes precedence. To shelve the…
