Introduction

You can set the date and time on the HMI device. The HMI must be restarted in the following cases:

• You have changed the time zone setting
• You have changed the "Daylightsavingstimecurrentlyineffect" check box setting.

Requirements

You have opened the "Date/TimeProperties" dialog with the "Date/TimeProperties" icon.

Procedure

Proceed as follows:

1. Select the appropriate time zone for the HMI device from the "TimeZone" selection field.
2. Touch the "Apply" button to confirm your entry.

   The time of day shown in the "CurrentTime" field is adjusted correspondingly to the selected time zone.

3. Set the date in the selection box.
4. Set the current time of day in the "Current Time" text box.
5. Confirm your input by clicking on the "Apply" button.

   The values you have set are now in effect.

   Note The system does not automatically switch between winter and summer time.

   
   
6. If you want to switch from winter to summer time, activate the "Daylightsavingstimecurrentlyineffect" check box.

   When you press the "Apply" button, the time is brought forward by one hour.

7. If you want to switch from summer to winter time, deactivate the "Daylightsavingstimecurrentlyineffect" check box.

   When you press the "Apply" button, the time is taken backward by one hour.

8. Confirm your entries.

   The dialog closes.

Result

The settings for the data and time of day have now been changed.

Internal clock

The HMI device has an internal buffered clock.

Synchronizing the date and time with the PLC

The date and time of the HMI device can be synchronized with the PLC if this has been configured in the project and the PLC program.

Further information on this subject is available in the "WinCCflexible" system manual.