Omron ZS Series Communication Command Reference page 62

Section 4
How to Obtain Flow Data
Setting Procesures for Data Obtaining Conditions
6.
Request and receive data.
Setting is completed.
All the data items are returned at once when the flow data request command
is sent in the status above.
Example: When sending a request command to the ZS-MDC (0ch), the
command is shown as below:
01h 01h E1h 0000h 00h 0001h
(No area is assigned for the specification of command send destination
channel in the flow data request command. The CH of USB cable connection
destination is the channel of command transmission destination. )
Because the flow data belongs to the "variable area reading" commands, the
response follows their format. However, note that only the contents of the
"data to be read" follow the format below:
(*)
In addition, whether or not the command ends cannot be judged by ETX
specified based on the CompoWay/F because the data to be read is
composed by binary data. Confirming the completion of data reception with
the number obtained is recommended.
The number of data items to be received can be calculated using the formula
specified in the step above: Data type (target data to be obtained) x Number
of data items to be accumulated.
4-6 ZS Series
CompoWay/F Communication Command Reference