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Yes, it is possible to communicate and connect an Automation Direct ViewMarq display with a ControlLogix PLC.  The Automation Direct ViewMarq display typically supports multiple communication protocols such as Modbus RTU, Modbus ASCII, and DF1. The ControlLogix PLCs from Allen-Bradley also support various communication protocols, including Modbus and Ethernet/IP. To establish communication between the ViewMarq display and the ControlLogix PLC, you would need to configure the appropriate communication protocol and settings on both devices. This typically involves setting up the communication parameters such as baud rate, parity, data bits, and stop bits. Once the communication is established, you can use the ControlLogix PLC to send data or commands to the ViewMarq display to manipulate the displayed information. This could involve sending messages, controlling the brightness, or triggering other display actions based on the logic and programming in the PLC. It's important to refer to the documentation and manuals provided by Automation Direct and Allen-Bradley for detailed instructions on how to set up the communication and utilize the specific protocols supported by the devices. Additionally, you may find it helpful to consult with experts or technical support from both manufacturers for further assistance in configuring the communication between the ViewMarq display and ControlLogix PLC. Candy Crush