Omron FH series User Manual page 95

Note
Saving All of the Measurement Results
If you output data from more than one Data Output Unit or for repeatedly measured output data (e.g., for continuous
measurements), the same Data Output Area will be overwritten.
To save all of the output data, adjust the output period and output time that are set in the EtherCAT settings so that all of the
output data is output and either receive all of the output data by using the Result Notification signal or use handshaking
control.
Handshaking lets you control data output by using the Result Notification signal turning ON as a trigger for the data output
timing and turning ON the Result Set Request to read the output data.
Each time that data is output (from the second output on), read the output data and move it to a different part of I/O memory
in the PLC.
Refer to Data Output Control with Handshaking (p.32) for more information on handshaking.
You can compare the received number of output data and the number of measurements for continuous measurements to
check if all of the measurement results have been received.
Use the following method to check the number of measurements that was actually executed.
• Application Example
Set a calculation to count the number of measurements that are executed in the measurement flow.
If you set something like [DO+1], each time a measurement is executed (each time the measurement flow is executed), 1
will be added to DO, so the present value of DO will give you the actual number of measurements.
Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)
EtherCAT Connections (FH-1000 series/FH-3000 series only)
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