Watlow EZwarePlus Programming Manual do Utilizador descarregar pdf (Página 182)

174 EZwarePlus Programming Manual

7. Date: Enable to display the date when the data was captured by the Data Sampling object.

a. Style: Select from MM/DD/YY, DD/MM/YY, DD.MM.YY or YY/MM/DD.

b. Color: Determines the color used to display the date.

8. Sequence no: Enable to display a sequence number of when the data was captured by the Data Sampling

object.

a. Color: Determines the color used to display the sequence number.

9. Time ascending or Time descending: Determines the order in which the data is displayed.

10. History Control: Use to select the target PLC or internal HMI register that is used to determine which data

log file is displayed.

For example, suppose we have data log files that were recorded during a four day period- 20090615.dtl

(June 15th), 20090616.dtl (June 16th), 20090617.dtl (June 17th), and 20090618.dtl (June 18th).

We choose to use internal HMI memory address LW100 for the History Control address. If the value in

LW100 = 0, then the History Data Display object will display the most recent data log record- in this example,

20090618.dtl (June 18th). If the value in LW100 = 1, then 20090617.dtl (June 17th) is displayed, and so on.

Note: The Option List can be used to select the data log file to display in the History Data Display by its date.

Select Dates of historical data for the Source of item data attribute in the Option list tab and assign the

Option List Monitor address to the same register as the History Control register in the History Data Display.

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Watlow EZwarePlus Programming Manual do Utilizador Página 182