Functions Available in Memory / Storage
You can use memory or storage to use the following features:
| Target Data | Application Memory | Backup Memory | Local Storage | SD Card | USB Memory |
| Store the project file |
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| Retain variable values |
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| Save Alarm History |
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| Save Logging Data |
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| Save Operation Logs |
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| Save Recipe Data |
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| Export Alarm History |
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| Export Logging Data |
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| Export Operation Logs |
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| Export and Import Recipe Data |
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| Export and Import Security Data (User Information) |
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| Store system files for Japanese input at run time |
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| Store images files used in the Picture Display object |
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Transfer project file to the display unit |
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Application Memory
Application memory is used for project data, recipe data, etc.
The application memory capacity you can use differs between display unit models. For the capacity of each model, see the following
Supported Model/Feature List
Backup Memory
This memory saves the data even when the display unit is turned OFF.
The priority when storing data in this memory area is as follows:
- Retentive Variable
- Alarm
- Data Logging
- Operation Log
To check the usage of backup memory, from the Project Explorer select [Target01].
Data size of each function is determined by the settings. Depending on the data size of each function, the free capacity available for other functions also varies.
For data size calculation, see Calculating the Size of Data to Save.
- The backup memory capacity which you can use differs between display unit models. For the capacity of each model, see the following.
Supported Model/Feature - Data in backup memory is preserved by the display unit's built-in backup battery. Data is lost if the battery is drained. For display units with rechargeable batteries, supply power to the display unit and fully recharge the batteries. Battery will be charged up to the level at which it can run backup 24 hours after the power is turned ON. It takes up to 120 hours (5 days ) to complete charging. Check the Hardware Manual for charging times required by the display unit.
For display units with non-rechargeable batteries, an error message appears to indicate when to replace. When replacing batteries, refer to the Hardware Manual for the display unit.
For error messages displayed, see Errors displayed on Runtime.
- Data in the backup memory is erased, when downloading the project.
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Since the models in the GP-4100 Series are not equipped with backup memory, part of the internal memory is used as the backup area. User documents refer to this area as "virtual backup memory". Data in virtual backup memory, just like backup memory, is preserved even when the display unit is turned off and on again.
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The SP5000 Series and SP5000X Series uses NVRAM for backup memory. Consider all instances of "SRAM" in this document as "NVRAM".
Local Storage
When using ST6000 Series, ST6000 2nd Gen Series or STM6000 Series, you can use local storage for file storage.
Recipes, alarm data, operation log, and data logging support exporting to local storage, and recipes support importing from local storage.
- Because the local storage uses flash memory, the system must be designed with write‑cycle limitations in mind. Repeated writing and deletion of large amounts of data, such as through the FTP Client function, the File Manager object, or script file‑management operations, may negatively affect the service life of the display unit.
- When you configure functions that repeatedly write to local storage, a warning message is displayed in the screen editing software.
- At run time, the flash-memory life expectancy is monitored. Warning and error messages display if there is too much flash-memory usage.
External Storage (SD Card / USB Memory)
The SD card and USB memory are collectively called "External Storage". For information about external storage, see the following.
Destination Folder (When Using SP5000 Series Open Box (Windows 10 IoT Enterprise Model), IPC Series, or PC/AT)
When using SP5000 Series Open Box (Windows 10 IoT Enterprise Model), IPC Series, or PC/AT, even if you select [SD Card] or [USB Memory] in the screen editing software setting, data is not stored in the SD card or USB memory inserted in the display unit.
Data is stored in the destination folder specified in either the [Destination Folder (SD Card)] or [Destination Folder (USB Storage)] properties.
To configure the destination folder:
- In the Project Explorer window, from [System Architecture] click [Target01].
- In the Properties window, click the [Function] tab and then the [Options] tab.
- In [Preferences], set the following properties:
Target Settings