Operating instructions

Operating a project
8.6 Bar and gauge
MP 377, MP 377 PRO (WinCC flexible)
210 Operating Instructions, 10/2008, 6AV6691-1DR01-0AB0
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.