Technical data

Working Out the Automation Concept
3.8 Describing the Required Operator Displays and Controls
Programming with STEP 7
68 Manual, 05/2010, A5E02789666-01
3.8 Describing the Required Operator Displays and Controls
Every process requires an operator interface that allows human intervention in the process. Part of
the design specification includes the design of the operator console.
Defining an Operator Console
In the industrial blending process described in our example, each device can be started or stopped
by a pushbutton located on the operator console. This operator console includes indicators to show
the status of the operation (see figure below).
The console also includes display lamps for the devices that require maintenance after a certain
number of starts and the emergency off switch with which the process can be stopped immediately.
The console also has a reset button for the maintenance display of the three motors. Using this,
you can turn off the maintenance display lamps for the motors due for maintenance and reset the
corresponding counters to 0.