Date

A Date variable is a way to specify a particular wall-clock date, without a time part. You
can use it to show the numeric components of that date.

Specification

• A Date variable is represented as an RFC 3339 string using the full-date profile.
• It does not include a time component.
  Need a time component?

  Use the Date & Time (Timestamp) type.

Examples

Date String	Description
2020-12-24	December 24, 2020

Additional Metadata

• Placeholders for Offline Editing
• Auto Reset a Variable

Troubleshooting

Ensure Correct Date and Time Settings on All Devices

Juggling with dates and time can be a real pain, especially in a client-server architecture with multiple computers being involved.

So, make sure all the computers involved are set up correctly:

1. Backends (aka your PLC)
   • The time on the PLC must be set correctly, including the time zone in which the system clock is running.
   • Timestamps from the PLC must always include an offset specification (e.g. UTC or UTC+2).
2. Computers Executing the HELIO Runtime
   • The time on the computer that is executing the HELIO Runtime must be set correctly as well.
3. Computers Executing the HMIs
   • Finally the time zone on all the computers running the HMI in the browser must be set correctly.

Learn More

Why is there an offset between the timestamps from my PLC and those displayed on the HMI?