C.5 Drive Operations by MEMOBUS/Modbus
C.5 Drive Operations by MEMOBUS/Modbus
The drive operations that can be performed by MEMOBUS/Modbus communication depend on drive parameter settings.
This section explains the functions that can be used and related parameter settings.
• Observing the Drive Operation
A PLC can perform the following actions with MEMOBUS/Modbus communications at any time regardless of
parameter settings (except H5-DD).
• Observe drive status and drive control terminal status from a PLC.
• Read and write parameters.
• Set and reset faults.
• Set multi-function inputs.
Note: Input settings from the input term inals S O and from M EM O BUS/M odbus com m unications are both linked by a logical OR
operation.
• Controlling the Drive
Select an external reference and adjust the parameters in
Table C.1
accordingly to start and stop the drive or set the
frequency reference using MEMOBUS/Modbus communications.
Table C.1 Setting Parameters for Drive Control from MEMOBUS/Modbus
Reference Source
Parameter
Name
Required Setting
External Reference
b1-01
Speed Reference Selection
2
b1-02
U p/Dow n command Selection
2
Refer to b1-01: Speed Reference Selection on page 139
and
Refer to b1-02: Up/Down Command Selection on
page 140
for details on operation mode parameter selections.
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