Yokogawa Data Logging Software GA10 - Manual (Page 88)

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IM 04L65B01-01EN
7.2 Frequently Asked Questions (FAQ)
Q1 Can the server and client be installed and run in the same PC?
A1
Yes. The server and client can be installed in the same PC or in different PCs.
Q2 Is there a way to back up the recording data files automatically?
A2
You can use the mail transmission feature to send generated data files as email
attachments. You can store the data files as back up in the device receiving the email
messages.
Q3 The communication between the server and a data collection device
was interrupted and then restored. How does the server behave when
communication is restored?
A3
Resuming data collection and recording
The server will retry to connect approximately every 30 seconds. When reconnection is
successful, the server resumes data collection and recording.
Recording data
The way that the server handles recording data when communication is restored varies
depending on whether data is being collected in PC time or device time.
• If data is being collected using PC time
The data during which communication was not possible will not be recorded.
• If data is being collected using device time
After communication is restored, the server prioritizes the collection of data that can be
gathered in real time through communication. Then, the server collects data that could
not be collected from devices and fills the missing data in the recorded data files. This
function is called backfill. Backfill only works when the necessary conditions are met. If
the conditions are not met, the data during which communication was not possible will
not be recorded. See Q4 .
Q4 How does backfill work?
A4
When a communication error occurs between a server and device, data dropout occurs in
the data file that the server is recording. Backfill is a function that fills the dropped data in the
recording file by retrieving the missing data from the device after the system recovers. Data
is retrieved automatically from the device when the following conditions are met.
Operating conditions
On the GA10 side
• Applicable data: Binary data (Excel data is not included)
• Data time is set to Device time.
On the connected device side
• Applicable devices: GX10, GX20, GP10, GP20, DX1000, DX2000, DX1000N,
DX1000T, DX2000T, MV1000, MV2000
• Internal memory contains the event data file corresponding to the data loss location.
• The recording interval of the event data file is the same as the acquisition interval of
the device.
• FTP transferring of files is enabled.(FTP server function: ON, Port number: 21)
• The multi batch function is not in use.
Chapter 7 Troubleshooting