Cautions on Save in CF Card/USB Storage
While data is being written to the CF Card/USB storage, changes to parts and screens may be slower.
It may take several seconds to write data, depending on the amount.
After the Status data is read from the display unit, be sure to allow time equal to at least one communication cycle*1 or one Display Scan Time period*2, whichever is longer, before the next command can be written.
Do not call up screens that use the CF Card/USB storage when the CF Card/USB storage is not installed on the display unit. It may not work properly.
If a write error occurs, any file that has not finished loading may remain on the CF Card or USB storage.
To overwrite and save existing data to the CF Card/USB storage data existing, the CF Card/USB storage must have enough free space to allow the data. If the data is larger than the available space, a write error will occur.
When saving data onto a CF Card or into USB storage and the target folder (\alarm...) does not exit, the folder is automatically created to save the data. If the folder cannot be created (for example, if the CF Card/USB storage is not initialized) a write error results.
The number of times that data can be written on a CF Card is limited. (Approximately 100,000 times for rewriting 500 KB.)
To format the CF Card/USB storage on your PC, select FAT or FAT32. When format to NTFS, the display unit cannot recognize the CF card or USB storage.
*1 The Communication Cycle Time is the time it takes from the point the display unit requests data until the display unit receives data from the device. It is stored in internal device LS2037 in Bin format. The unit is 10 milliseconds.
When using multiple devices/PLCs, you can each the communication cycle time of each device/PLC from the [System Settings] [Peripheral List] page's [List of Device/PLC Management Addresses].
5.19.13 Peripheral List Settings Guide
*2 Display Scan Time is the time required to process one screen. It is stored in internal device LS2036 in Bin format. The unit is in milliseconds.
When ejecting a CF Card, make sure that the CF Card access LED lamp turns OFF. Data on the CF Card may be damaged.
When accessing a CF Card, be sure not to power OFF or reset the display unit, or eject the CF Card. Create an application screen on which the CF Card cannot be accessed, and on that application screen, you may power OFF or reset the GP, open and close the CF Card cover, and eject the CF Card.
When inserting a CF Card, check the front and back sides and the connector position of the card. If the CF Card is inserted the wrong way, the data, the CF Card, or the display unit may be damaged.
Use a CF Card manufactured by Digital Electronics Corporation. If a CF Card manufactured by another company is used, the contents of the CF Card may be damaged.
Please make sure to back up all CF Card data.
Please refrain from doing the following, as it can result in damage to data and equipment:
Bending the CF Card
Dropping the CF Card
Spilling water on the card
Touching the CF Card's connectors directly
Disassembling or modifying the CF Card
While accessing the USB device, do not reset the display unit or remove the USB storage device. Data on USB storage may be damaged.
To remove the USB storage device safely, design the system to remove the device only after turning ON system variable #H_Control_USBDetachTrigger and after confirming #H_Status_USBUsing is OFF.A.7.2.1 Bit - #H System Variables
Please make sure to back up all data on USB storage devices.
Do not connect more than one USB storage device. If you do so, the USB devices may not be recognized properly.
When formatting the USB storage device using FAT16 or FAT32 on a PC, the maximum usable capacity is 2 GB.
The display unit cannot use USB storage devices that are FAT16 or FAT32 with greater than 2 GB.
External Memory List for Saving Data
The following shows external memories you can use to save data in (or browse to).
Available memories you can use to save data in differ depending on the model.
1.3 Supported Features
|
Feature |
|||
|---|---|---|---|
|
Screen Capture |
○ |
○ |
○ |
|
Image Display on Picture Display |
○ |
○*1 |
× |
|
Saving Alarm History Data (CSV File) |
○ |
○ |
× |
|
Saving Sampled Data (CSV File) |
○ |
○ |
× |
|
Backup Sampled Data |
○ |
○ |
× |
|
Recipe (CSV data) Transfer |
○ |
○ |
× |
|
Recipe (Filing Data) Save |
○ |
○ |
× |
|
File Display on File Manager |
○ |
○ |
× |
|
File Manager Copying Feature between CF Card/External Memory |
○ |
○ |
× |
|
Display on Display CSV Data |
○ |
○ |
× |
|
Sound Data Save |
○ |
× |
× |
|
Movie File Save/Play |
○ |
× |
○ |
|
Video Screen Capture (with VM Unit) |
○ |
○ |
○ |
|
JPEG Display on Video Modules |
○ |
○ |
○ |
|
Video Modules (memory loader) |
○ |
○ |
× |
|
Available Space Check |
○ |
○ |
× |
|
Backup SRAM Data Save |
○ |
× |
× |
|
Offline Memory Initialization |
○ |
× |
- |
|
Using the File Operation Function of D Script |
○ |
○ |
× |
|
Saving the Operation Log |
○ |
○ |
× |
*1 Displays only when using a [Picture Display] with the [CF Image Display] and the [Display Method] is [File Manager].
Restrictions for Screen Captures
To capture, it takes about 5 to 6 seconds and file size will be about 200 Kilobyte. When Total Display Digits = 80
The file size and capture time depend on the image quality and screen size.
Part displays are not updated during capture.
If you capture a screen with the Blink option, the captured image is displayed with no blink.
If you create a file with other actions than screen capture while the CF Card/USB storage device is inserted, the file is overwritten with the next [Auto Increment File Number].
When you use [Auto Delete File], it may take some time to delete many files. All files are deleted so this can take from a few seconds to a few minutes.
Precautions for SRAM Auto Backup
Make sure the CF Card free space is larger than the backup SRAM size. Free space is checked before the process execution. If there is no sufficient free space in a CF Card, data is not saved in the CF Card.
While running [SRAM Auto Backup], save to CF card functions will not run, such as saving sampling groups to CSV or the System Settings window's [Save Data] memory card settings, These processes will run once backup is complete.
When [SRAM Auto Backup] is run while either the sampling group ([Display/Save in CSV] setting) or the operation log ([Save Data] group's [Save in] setting) saves to CF card, the save to CF card operation is paused until the SRAM back up is complete.
When [SRAM Auto Backup] is run while any CF card write operation is in process, except for sampling group or operation log saves to CF card, the SRAM back up is paused until the save to CF card operation is complete.
Only one backup file can be saved in a CF card.
In the display unit's offline mode, if you run from the [Initialize Memory] menu the [Initialize CF Card] command, a SRAM folder will be created.
In the display unit's offline mode, if you run Transfer CF Card→SRAM all the data saved in backup SRAM (such as sampled data) will be replaced.
In the display unit's offline mode, if you run Transfer CF Card→SRAM the stored Japanese FEP preferences will be overwritten. For this reason, the display order of the convert-to characters may change according to the frequency of use.