Human Machine Interfaces
Humans are visual creatures. This also applies when operating machines and systems. The more the operator’s eye can make sense of the information, the more reliably he will operate the system. Operating devices with the cumbersome name of ""Human-Machine Interface"" (HMI) are specially designed for mechanical engineering and process technology. As well as a touchscreen which is suitable for industrial use, the HMI also features specific software which evaluates, displays and processes process data. Standardised processes mean that integrating an HMI into a system with programmable logic controllers (PLC) is easy.
Animations and graphicsAs a simple example, the fill level of a tank can be elegantly visualised with a realistic depiction. All that is required is a signal from the tank's pressure sensor. The HMI software takes care of the rest. The same goes for the visualisation of diagrams, trend curves etc.
Efficient engineering with SIMATIC HMISIMATIC HMI operating devices with touchscreen impress with their brilliant display quality and powerful visualisations. This makes it far easier to operate both individual machines and complete systems. The flexible, ready-to-go solution saves time in terms of installation and engineering.
SIMATIC KTP700 Basic Panel
With button/touchscreen operation, 7" TFT display, 65,536 colours, PROFINET interface
OMRON NB series
With the Omron NB series, you can create your engineering projects easily and securely. One special feature is the window management, which can display pop-ups and window-in-window.
Data transfer, recipesThe big advantage of an HMI is the large number of actions that can be carried out with a single control element in comparison to traditional buttons and switches. For example, recipe data can be collected simply on a freely customisable recipe display, and then transferred to the PLC.
The HMI operating device has its own processor, in order to implement the functionalities envisaged in the engineering design. The analogue and/or digital signals from the PLC system, sensors etc. are imported into program objects and prepared for visualisation. Data entered by the user will then also be output as a standardised analogue or digital signal.
Industrial monitors with touchscreen or multi-touch functionalityFor PC-based systems, an HMI with integrated processor is not required. Instead, robust industrial monitors with touchscreen displays which can be integrated into front panels are used.
18.5" industrial monitor with multi-touch functionality, for PC-assisted visualisation of process data and sequences, as well as for entering parameters. IP66 protection on the front side.
15" industry monitor for industrial HMI applications. Robust, flat aluminium enclosure for integration into front panels, IP65. RS232/USB interface for the touchscreen functionality.
Part of the area of human machine interface that is widely utilised in the automation industry, displays play an important part of ensuring that processes continue to function as efficiently as possible. For people to be able to regulate certain automated processes, they need good quality information, often shown on process displays which carry out highly specific functions. Process displays can, for instance, be used to display the temperature of a machine that is carrying out a certain function. Equally, one might be used alongside a PLC system to show when any alteration it has made to a process has been carried out, according to its pre-determined programming. Most displays offer simple parameterisation, have programmable interface parameters and show their numerical information with standard LEDs. These vary in size greatly, according to the particular requirements of the place where they will be used. Some display only offer single digits but others are capable of many more. Made by manufacturers such as GS Industrie, Ditel and Red Lion, some have process display accessories, like USB or RS232 interfaces, and many offer standard input interfaces such as RS485.