When using external storage, refer to the following limitations.
5.6.3 Restrictions on External Storage Usage
Up to 8999 folders can be registered. Only one folder can be stored in backup memory (SRAM).
The size of one folder can be up to the same size as the total capacity of the backup memory SRAM when only recipes are stored.
Even when filing data is stored on an external storage device, regardless of the external storage memory capacity, one folder must have a capacity equal to the backup memory's (SRAM) maximum capacity.
Up to 2048 files can be set in one folder.
Up to 1650 blocks can be saved in one file. (The maximum number changes depending on the Number of Files and Number of Data Items.)
The maximum amount of data in one block is 10000 for 16-bit data, or 5000 for 32-bit data. (The maximum limit depends on the number of files and number of blocks.)
The more data transferred to the device/PLC, the more time it takes to complete the write operation. The time from when transfer starts to when transfer is complete can vary from several seconds to several minutes.
While writing to a device/PLC, the display of Parts may not update properly or may become slow. Screen changes and other operations may also become slow.
If a screen change occurs during transfer, in order to read the screen information, it may take some time to write to the device/PLC.
If data exceeding the device range of a device/PLC is transferred, an error occurs and no transfer is performed.
Wait until a transfer completes before initiating another one. If a transfer is started before the previous one ends, such as when an automatic transfer and manual transfer occur at the same time, the second transfer operation may not be accepted.
If a project transfer or changing to offline mode is performed while transferring data, the data may not be transferred completely.
Data in backup memory (SRAM) is erased on:
Transfer Project (Send Project)
Offline mode's [Initialize User Memory]
Offline mode's [Initialize Backup SRAM]
Do not duplicate an ID Number for the Special Data Display [Filing] on all screens
The generated filing data cannot be used with other projects.
When the following actions are performed after creating filing data in the external storage, please re-save the filing data in the external storage.
Save as a project name.
Change/Add/Delete Device/PLC
In Device-Specific Settings, add/delete Individual Display Unit.
In Device-Specific Settings, edit the imported data.