Modbus Communication
‑40‑
6. Double‑click ""NNeettwwoorrkk CCoonnffiigguurraattiioonn"" on the left, choose Serial Port > COM 0 on
the right, and double‑click MODBUS. A new slave device is displayed on the
Modbus bus in the center of the screen. If there are multiple slaves, click MODBUS
multiple times to generate multiple slaves.
7. Double‑click the new Modbus slave, set the slave station number according to the
setting of FD‑02 of the AC drive. Record the value of the slave enable variable.
8. Write the PLC program: The slave enable variable is enabled; the frequency of the
AC drive is set to 50 Hz; the PLC runs for 4000 scanning cycles; during the first 2000
scanning cycles, it controls the AC drive to run in forward direction, and during the
last 2000 scanning cycles, it controls the AC drive to run in reverse direction; then it
controls the AC drive to decelerate to stop. Note that the slave enable variable
must be enabled.
To Next Page
Loading...
