You can set the date and time shown on the display unit.
When using GP4000 Series and LT4000 Series, you can update the display unit clock periodically or at a specified timing. By using this feature, time adjustment in offline mode is unnecessary. For details on the clock update settings, refer to the following.
5.5.1 Common - Clock Update Settings
Enter offline mode, and touch the time display area in the control switches to display the [Time Setting] dialog box.
For GP-4100 series, from [Main Unit] touch the [Date and Time] button.
Touch the unit for the date or time. When the field is highlighted, enter a new value using the numeric touch keys.
Once all values are input, touch [OK] and close the [Time Setting] dialog box.
When using GP-4100 series, touch the [Settings] button.
[Home] screen displays. Touch [Exit] to complete the setup.
When using GP-4100 series, touch [Top] to return to the initial screen. Touch [Exit] and in the confirmation screen, touch [Lose changes and exit].
The display unit internal clock has a slight error. When displaying the defined time using tags or other settings, be aware of the following. At normal operating temperatures and conditions, with the display unit operating from its lithium battery, the degree of error is 65 seconds per month. Variations in operating conditions and battery life can cause this error to vary from -380 to +90 seconds per month. For systems where this degree of error will be a problem, the user should monitor the clock and make adjustments when required.
If the backup battery runs out, the clock data is initialized. Data in the backup memory (SRAM) is lost as well.
For displays with rechargeable batteries, supply power to the display unit and set the clock data again. The display unit is recharged so it can handle back ups, 24 hours after the power is turned ON. A complete recharge requires 96 hours (4 days).
For displays with non-rechargeable batteries, change the batteries by referring to the hardware manual for your display unit and set the clock data again.
When using a GP4000 Series or LT4000 Series unit and the Clock Update Settings is set to "Cycle", time adjustment in offline mode is disabled. Time data is acquired from a device/PLC when returning to the Transfer screen.
For GP-4100 series, on exiting offline mode do not touch [Save changes and exit]. If you touch [Save changes and exit], offline mode ends, the display unit restarts, and time adjustment is disabled. Time adjustment should be done separately, after you complete display unit settings that require restarting the display unit.