A.1.1.5 Device/PLC System Data Area
Allocation Procedure
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 [Project (F)] menu, select [System
Settings (C)] or click . In [System Settings],
select [Display Unit]. In [Display Unit], select the [System Area]
tab. The following dialog box appears.
Assign the addresses in the device/PLC you will
communicate with. In [System Area Device], select the device/PLC
where you will assign addresses and set the start address of an
area that has 16 words or more of continuous addresses 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.
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 [System Settings],
select [Display Unit]. In [Display Unit], select the [System Area]
tab. The following dialog box appears.
