Back to Items IndexItem - Math Start Stop Value
Please refer to Adding a New Item for specific information on how to add an ITEM and how to change its properties.
Description
This ITEM is often used in conjunction with a batch type process where a reference value is required to be held for a period of time.
Properties
| Class Name | A unique name for this item. The class name is display only and cannot be changed. |
| Name | Enter a meaningful name for this Item so that you, and other people, will easily recognize what it is for. |
| Enabled | No - The ITEM is not enabled and will not update
when its TASK updates Yes - The ITEM is enabled and will update when its TASK updates. |
| Value | Select the ITEM that has the Value to be held. |
| Signal | Select the ITEM that will signal when the Value is to be updated. |
| Value Type | Update Value on Return to 0 - This option
will only update the value when the Signal returns to 0. Update Value on Departure from 0 - This option will only update the value when the Signal changes from 0 to another number. |
| On PC Re-Start | Set Value = 0 - This option will set the
ITEM Value to 0 when the program is restarted. RESUME with Last Value - This option will set the ITEM Value to the value it was the last time it was updated. |