Roy • GE Fanuc: The next generation is just around the corner. Tools are now becoming available to create "context." Variables are now defined in the context of an "equipment model," which highlights both their location and relationship by the function they perform. Additional context will define data relevance to different users, such as variables an engineer only has access to, variables for an operator, or specific variables for the quality department.

Context will eventually include the cause and effect relationships of variables — for example, this speed will impact that torque, or this limit switch will stop that travel. If a machine is down, the cause and effect context will immediately enable automated troubleshooting, displaying the information an operator needs to quickly access a situation.

Machine builders will spend more time developing context models and less time developing interface screens. Screens will become the automated function of the HMI, automatically delivering appropriate views for operation, troubleshooting, and process workflow management, based on the current state and process knowledge that is now an inherent part of the control system.

Eyal • Unitronics: Just as the cell phone is becoming less of a communication device and more of an entertainment device (with embedded camera, music and video player, and Internet browser), mobile phones and wireless PDAs will have an increasing role as HMI command and control centers. The use of the Internet and fast communication technologies will increase the use of browsers (local and remote) as consolidated HMIs. Voice operated and voice response systems will also increase in use; voice recognition technologies are emerging with better quality and accuracy, with industrial applications already available, such as "pick by voice" logistic solutions. In a futuristic scenario, a 3-D HMI will allow "virtual walkthrough" inside machines, mainly for inspection and troubleshooting.