Alarms (Real Time / Historical)Viewing the alarms the operator could sense the situation and react to the same positively without losing much time to attend to any malfunction, else. Some of these are for preventive purposes. Historic alarm logging is one such facility which would be useful to track problems. The system could be used to optimize the process simultaneously and also ensure safety and restricting loss of time. Students of Wiztech could have the knowledge and skills in the subject through HMI in Automation Training
Trends (Real Time / Historical)Trends are very useful with PID's. The curve could be viewed and used to reach a certain set point. Accordingly required optimization could be done depending upon the values to make the process more efficient.
SimulationSimulating a plant in the office is a facility that some of the high quality HMI systems enable. PLC program could be developed using Simulation resulting in ease and comfort to test their program without even having single equipment or a device. This facility will help plants during start-up time.
CommunicationThe HMIs today are so advanced that they can communicate with different brands of PLCs. The following are the most prevalent:
- Serial Port
- Data Highway Plus (DH+)
- Remote I/O
- Ethernet (TCP/IP)
- DDE - Dynamic Data Exchange (DDE)etc ..