25.11.3.5 Mode / Bit Change

Execution Condition

Select the sampling action execution condition. Select [Bit Change].

Sampling Trigger Bit Address

Select the address which will control the sampling's timing. The sampling will execute every time this address changes (ON/OFF).

Occurrences

Select the number of times sampling will occur. The setting range is from 1 to 65535.

The setting range is limited by the number of sampling groups and addresses (words) registered in the entire system.

Data Full Bit Address

After the designated number of data samples are completed, this address will be used to confirm that the operation is finished. Select whether or not to verify this bit address.

This bit tells when a data sampling cycle is complete. The sampling operation will continue running even when this bit is ON.

This address is not turned OFF automatically. In order to verify the next sampling cycle, please ensure that this bit is returned to the OFF state.

Data Clear Bit Address

Designate the bit address to control the clearing of the sampling data. When this address turns ON, all the Sampling Group data stored in the display unit will be erased. After clearing the data, this bit will turn OFF.

Extended

Displays the [Extended] dialog box.

Overwrite old data after finishing the specified cycles

Data will be overwritten and stored, starting with the oldest data, after data has been sampled the designated number of times. This setting is fixed to enable.

Add Time Data

Select whether or not to store the sample time along with the sampled data. If this is not designated, when displaying/saving in CSV or printing, the date/time columns will be blank.

You must set [Show Cursor] in the [Historical Trend Graph] for Show Cursor to operate.
19.13.1.9 Historical Trend Graph - Display Historical Data

Retain Sampling Data (SRAM)

Select whether or not to save the sampling data to the backup memory (SRAM). If the sampling data is not saved, the data will be deleted when the power to the display unit is turned OFF or reset.

Back Up Sampling Data

Select whether or not to backup sampling data backup memory (SRAM) automatically in external storage every time the designated number of sampling cycles is completed. The data is saved in binary format.
Data backed up in the external storage will be used when displaying historical data in a historical trend graph. If data is not backed up in external storage, historical data will be displayed only for the number of occurences saved in the backup memory (SRAM).

25.14.1 Usage Capacity of Sampled Data

When selecting this item, precautions on backing up and the maximum number of historical data that can be displayed in the Historical Trend Graph are displayed on the right-hand side. The maximum number is [Occurrences] x [Backup Count] of condition settings.
On the following models, the index file "TSAMPINDEX.idx" is automatically created during backup.

SP5000 Series
GP4000 Series (excluding GP-410*)

The display retrieves the data from this file and displays it in the Historical Trend Graph. For more information about index files, please refer to the following.
19.8.3 Display Historical Data

Save in

Select the "Save in" location for backup data from [CF card], [SD Card] and [USB storage].

Folders are automatically created for each sampling group in the "Save in" location. The saved file name will be Time Stamp (year/month/day/hour/minute/second when saved).

For example, when it is saved at 14:30:05 on July 2, 2007

\SAMP**\T070702_143005#.bin
("**" represents sampling group number and "#" represents index number)

The index number for file names is from 0 to 9. You can save up to 10 files at the same time.

Backup Count

Specify the number of times (1 to 500) to write the backup data.

When Exceeding Backup Count

Select an action when the number of backup data file exceeds the value set in the Backup Count

Overwrite oldest data

Delete the oldest file and add a new file.

Interrupt Backup

Stops backup. "9" (number of files exceeded) is stored in the status address.

Status Address

Indicates whether the saved operation status and error information are stored in the specified address.

The error status indicates the following error codes.

Error Code

Bit 12 to 15	Contents	Details
0	Completed Successfully	Transfer completed successfully.
1...3	Reserved	--
4	No external storage	There is no external storage device inserted into the display unit. The CF Card cover is open. The USB storage is not formatted properly or is damaged.
5	Write Error	The external storage does not have enough free space or the storage was disconnected during write operation. 10 backup data files with the same time stamp already exist because the time setting of the display unit was restored, etc. The SD Card is write-protected. The index file is read-only. (SP5000 series or GP4000 series)
6	Reserved	--
7	CF Card Error	The CF Card is not formatted properly or is damaged.
8	Reserved	--
9	Excess Number of Files	Exceeded number of files set up

Even if the error status is saved, retains the save request. The save process runs the moment the error status is released. If the [Data Full Bit Address] turns ON while still in error status, the retained save request is discarded, and the save request for the new backup data is now retained.