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Flow chart
The above program executes the operation 1 to 3 repeatedly.
1. Updates the write data if the write data (DT50 and DT51) and the read data (DT60 and DT61) are
matched.
2. Writes the DT50 and DT51 of the local unit into the data DT0 and DT1 in the unit number 1 from the
COM1 port.
3. Reads the data DT0 and dT1 in the unit number 1 into the data DT60 and DT61 of the local unit from
the COM1 port.
Note) The above COM1 port will be COM2 port for the COM2 port.
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