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Example "PID control"
4.8 Adjust HMI screen
STEP 7 Basic V10.5
158 Getting Started, 12/2009, A5E02651459-01
4.8 Adjust HMI screen
Introduction
The following steps show you how to replace the status light of the heating chamber with an
I/O field.
The heating chamber was switched on in the extended example, if the "chamber_ON_OFF"
tag had the value "1". Because the temperature is now controlled by means of the PID
controller, this PLC tag is no longer used. Instead of the status light, the current temperature
should now be displayed in an I/O field.
I/O fields
Process values can be entered or displayed in the HMI screen by means of an I/O field.
Requirements
The program has been created.
The HMI screen is open in the editor.
Procedure
To display the temperature value in the HMI screen, follow these steps:
1. Delete the orange colored circle.
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