HE: Time, Analog & Digital

Analog & Digital Time

Time elements enable you to:

Display time values, either from the PLC's RTC or values stored in an RTC Time data tag

Enable time values to be edited via the HMI panel

Digital Time

In the following image, the widget is linked to the RTC System Struct and Read-Only is not checked.

When the user enters a value, it modifies the actual value of the RTC in the PLC.

Digital Time Attributes

Hours 12/24

You can select either a 12 or 24 hour format by clicking the drop-down arrow.

Retain AM/PM Space

This option is displayed when you select H24 (24-hour format). Chech this option to retain the Placeholder space for AM/PM.

Read-Only

Read-only is checked by default. To enable the end-user to enter data, you must uncheck Read-only.

RTC properties

A Time or Date element is may be linked to one of two, mutually exclusive properties:

System RTC Settings, which are the internal settings in the PLC (default).
RTC Struct (by User), which is a struct created by the user in the Tag database (enabled only if System RTC Settings is unchecked).

Note that in either case, the RTC values can only be edited via the HMI panel if the Read-only Property is unchecked.

Tag: Data Entry Complete

The linked bit turns ON when an element has been touched, the keypad has opened for data entry, and the user presses OK. The bit turns ON whether or not any data has actually been entered. Note that the bit remains ON until it is reset.

Tag: Enable Data Entry

Assign a bit to allow you to enable or disable data entry.

In the following image, the Analog Time Widget is linked to a user-defined struct.

When the user enters a value, it modifies the struct value, leaving the PLC's RTC unchanged.

Analog Time Attributes