A.1.1.1 Details About Each Address - LS Area (Direct Access Method)

• System Data Area

This area stores data required for system operations, such as the display unit screen control data and error information.  
A.1.1.2 System Data Area (Direct Access Method)
To use a device/PLC to reference or change the current screen on the display unit, you can set up an area on the device/PLC that references and controls display unit data. 
A.1.1.5 Device/PLC System Data Area Allocation Procedure

• Read Area

This area stores data used commonly by all screens.
The area size is variable, with a maximum of 256 words.
To use a device/PLC to reference or change the current screen on the display unit, you can set up an area on the device/PLC that references and controls display unit data. 
A.1.1.5 Device/PLC System Data Area Allocation Procedure

• User Area

This is an internal device and cannot be mapped to the device/PLC. Use it for addresses that can only be processed with the display unit. You cannot control it from the device/PLC.

• Special Relay Area

This area stores each type of status information that occurs when the display unit communicates. 
A.1.1.3 Special Relay (Direct Access Method)

• Reserved

Used internally on the display unit. Do not use this area. It will not operate normally.

• LS9000 Area

Stores the display unit's internal operating information such as a Trend Graph's historical data and the communication scan time. There is also an adjustable part of the area. 
A.1.1.4 LS9000 Area (Direct Access Method)