Delta AH500 Hardware Operation Manual page 547

A H 5 0 0 H a r d w a r e a n d O p e r a t i o n M a n u a l

After setting up the parameters, click
click to download the settings to the PLC. And then click
Note: From here you can also follow Operation B to complete the recording and saving.

When the recording is done, click the uploade button to update the data for later viewing.

Click on the icon toolbar to export the data to your computer for future use.

Click on the icon toolbar or use SM and SR to save the data to the SD Card installed on the PLC.
Operation B
You can also use SM flags or SR registors to complete the data recording, data saving or set to store data on a
SD card permanently. See the example below for reference.
Example:

Check if the flag SM457 is ON. If the flag SM457 is ON, it indicates the valid recorded parameters are
downloaded in data logger. And that means the operation A is done correctly.

Use inputs to enable/disable or set the flag SM454 to ON for the PLC to start recording. If you need to
store data on a SD card, set SR902=16#5AA5.

When SM455 is ON or when the quantity of data has met the value set in SR900 (32-bit value), the
system start saving data on a SD card.
NOTE: While sending data to the SD card for storage, the PLC needs a period of undisturbing time,
approximately tens of milliseconds. During this period, the PLC is not allowed to execute interrupts. Make
sure the PLC is NOT executing any interrupts, especially the external input ones before starting to send
data to the SD card for storage.

When SM455 is switching from OFF to ON, set SM456 ON. And the PLC starts to store the recorded data
on the SD card. The default path and the file name are as shown below:
11 - 9 8
on the icon toolbar to have the system in the online mode. Then
to record data.