Download SIMATIC HMI HMI device MP 377 (WinCC flexible)
Transcript
Operating a project 8.6 Bar and gauge 8.6 Bar and gauge Bar The bar is a dynamic display object. The bar displays a value from the PLC as a rectangular area. The bar allows you to recognize the following at a glance: ● The distance of the current value from the configured limit values ● Whether a set point value has been reached The bar can display values such as fill levels or batch counts. Layout The layout of the bar depends on the configuration: ● The bar may feature a scale of values ● The configured limit values can be indicated by lines ● Color changes can signal when a limit value has been exceeded or has not been reached Gauge The gauge is a dynamic display object. The gauge displays numeric values in analog form by means of a pointer. This enables an operator at the HMI device to see at a glance if the boiler pressure is in the normal range, for example. Layout The layout of the gauge depends on the configuration: ● A trailing pointer can display the maximum value reached so far on the scale. The trailing pointer is reset when the screen is reloaded ● The label on the scale can show the measured variable, for example boiler pressure and the physical unit, for example bar Operation The bar and the gauge are for display only. Both objects cannot be controlled by the operator. MP 377 (WinCC flexible) Operating Instructions, 09/2007, 6AV6 691-1DR01-0AB0 185