Fluke 225C Programming Reference Manual page 9

A typical program sequence consists of the following user
actions:
1. Set the communication parameters for the RS232 port of
the computer to match the ScopeMeter settings.
2. Output a command or query to the ScopeMeter.
3. Input the acknowledge response from the ScopeMeter.
If the response value is zero, go to step 4.
If the response value is non-zero, the ScopeMeter did not
execute the previous command. Read the error message from
the following acknowledge subroutine, recover the error,
and repeat the command or query. (This is not shown in the
following program example.)
4. If a query was output to the ScopeMeter, input its
response.
5. The sequence of points 2, 3, and 4 may be repeated for
different commands or queries.
6. Close the communication channel.
Refer to the program example on the next page.
Page 2.7
** Typical program sequence **
An example