8.14.5 Common Settings (Symbol Variables) Settings GuideIn GP-Pro EX, in addition to device/PLC addresses and a display unit's internal device addresses, you can use symbols, variables, and system variables for addressing.
Symbols are names created by the application designer and applied to an individual address on a device/PLC or on the display unit's internal devices. You can register Symbols from the [Common Settings] menu's [Symbol Variable] command. The total number of symbols you can register is 10000.8.14.5 Common Settings (Symbol Variables) Settings Guide
You can manage all addresses using names, and even use these names when defining the address in parts and other objects.
Addresses you can map:
Bit address and Word address
You cannot use symbols set up as an array in logic programs.
Variables are symbols mapped to the variable area on the display unit. Refer to the following for details of each variable.30.3.2.2 Variable Type
There are two ways to register variables as follows.
Variable format:
You can use the variable area set up on the display unit by defining the data format and name.
You can register Variables from the [Common Settings] menu's [Symbol Variable] command.
The total number of variables you can register differs depending on the model. (You cannot register variables with the GP-4100 series.))
GP-3200 Series, ST3000 Series: 1000
Other models: 6000
8.14.5 Common Settings (Symbol Variables) Settings Guide
When creating a new project file, select [Variable Format].
If you selected a model that does not support logic functions, you cannot select [Address Format].
You can select [Address Format] only when creating a new program. You cannot change the format to [Address Format] after you create a program.30.3.2 Using Addresses with Flexible Names (Variable Format)
Address Format:
Use a fixed variable name for individual addresses. Use this format when there are too many addresses to name.
You can change the method from [Address Format] to [Variable Format] even during logic programming. However you cannot change back from [Variable Format] to [Address Format].
Even if the number of addresses in the logic program exceeds the number of variables, you can change the format from [Address Format] to [Variable Format]. This causes only the addresses in the logic program to change to variables.
Thus, not all the addresses available to the logic program are changed to variables.30.3.3 Using Prepared Addresses (Address Format)
PLC Address (Device Address)
For a device address (Device Address), use the original addresses of device/PLC or display unit, for example, [PLC1]X00100 or [#INTERNAL]LS0100.
External Address
Connection Device Address
This looks up the connection device data.
You can use this area only when communication with the device/PLC is set through a direct access system.
For example, [PLC1]X00100
You cannot use disabled addresses to read devices/PLC. For unreadable addresses, refer to the "GP-Pro EX Device Connection Manual".
For logic programs, you cannot use indirect device addresses.
Internal Address
These are temporary storage locations for saving data such as the values operated on or controlled in the display unit.
LS Area
This contains free user areas and an area for operating the display unit.
You can use this area only when communication with the device/PLC is set through a direct access system.
For example, [#INTERNAL]LS0100
USR Area
You may use all areas as you like, up to 30,000 Words.
For example, [#INTERNAL]USR00100
Memory Link System Area
This area acts as a medium for the host write/read request.
You can use this area only when communication with the connection device is set through Memory Link.
For example, [#MEMLINK]0100
These variables have predefined functions. Show the display unit status, or run operations. You cannot delete system variables.