What is a HMI?
This is a Siemens HMI panel, this particular model is a TD200. A HMI (also know as a MMI sometimes) stands for Human to Machine Interface and Man to Machine Interface respectively. Although MMI is not perceived to be politically correct these days so you will hear that term less and less. The HMI’s job it to convert the intentions and signals from a human into electrical signals for the machine information system to use. Thus in doing so, allows the human operator to make interactive changes in the software process and data. An example would be pressing a button to reset the production count. HMI’s quite often have a display incorporated into them as well to enable the operator to see the relevant data to the action being performed. The evolution of the computer has and continues to have a great impact on society and industry. We are in an adjustment cycle with the current computer evolution, but more importantly some of us are trying to adjust to meet the changes for the coming decade
