When referencing a screen number that displays on the display unit from a device/PLC or changing screens, to reference/control the display unit's data, share the display unit's internal System Data Area's allocated data with the device/PLC.
*1 Set up the start address using the following process.
*2 n = 0 to 20. This depends on the number of selected items in the display unit's set System Data Area.
*3 This is the Read Area Size.
*4 X = Read Area Start Address (20) + Read Area Size (m)
When multiple devices/PLCs are connected to a single display unit, the System Data Area can only be allotted to one device/PLC.
Do not set addresses for Parts which span the System Data Area and Read Area, or the Read Area and User Area.
When setting addresses for Parts in the System Data Area, set the data length as 16 bit.
The number of addresses that can be set in the System Data Area differs depending on the device/PLC. For details, please refer to the GP-Pro EX Device/PLC Connection Manual.
From the [System Settings], click [Display Unit] and open the [System Area] tab.
Assign the addresses in the device/PLC you will communicate with. In [System Area Device], select the connecting device (for example, "PLC1") to which addresses are assigned, and set the start address in [System Area Start Address]. (For example, [PLC1]D0000)
Data used in all common screens and Line Charts' block display data is stored in the "Read Area." According to the needed capacity, set a [Read Area Size] of up to 256 words. Use the LS area exclusively as the read area starting from the address on the right (example: [PLC1]D00000) and continuing for the designated number of words.
Place a checkmark by [Enable System Data Area], and checkmark the items to be used.
A.1.1.2 System Data Area (Direct Access Method)
When using a Global Window, 4 Words are used for the [Window Control], [Window Screen], and [Window Display Position].
12.6 Changing the Window on All Screens
In order to use the system data area, consecutive address areas are necessary. For cases in which the area is insufficient, checkmarks cannot be placed. The number of addresses to be used can be verified in [Number of Words to Use].
The settings are complete.