Maple Systems Silver Plus Series Installation And Operation Manual page 118

114 Sil ver Plus Se ries In stal la tion & Op er a tion Man ual
The PLC Control Object
The PLC can display a full screen window by using the PLC Control Object. This object allows the OIT to
continuously scan a PLC register to display a full screen window, which corresponds to the number in the PLC
register.
Once the OIT displays a full screen that is requested by the PLC Control Object, the OIT will automatically write
the number of the requested screen to the next consecutive register. For example, if you assign internal data register
LW10 to a PLC Control Object/Change Window and the number 3 is placed into this register, then the OIT will
display Screen #3. Finally, it will put the number 3 into LW11. This allows the PLC to confirm that the Screen has
been properly displayed by the OIT.
You can create as many PLC Control Objects as you need -- each object is universal and is not dependent upon
which OIT screen is currently on display.
To call a full screen window using the PLC Control object
1. From the Objects menu, select PLC Control. The PLC Control Object dialog box appears.
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