C.6 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.
u
Observing the Drive Operation
A PLC can perform the following actions with MEMOBUS/Modbus communications at any time regardless of parameter
settings (except H5-
).
• Observe drive status and drive control terminal status from a PLC.
• Read and write parameters.
• Set and reset faults.
• Set multi-function inputs. Inputs settings from the input terminals S
and from MEMOBUS/Modbus communications
are both linked by an OR operation.
u
Controlling the Drive
To start and stop the drive or set the frequency reference using MEMOBUS/Modbus communications, an external reference
must be selected and the parameters listed below must be adjusted accordingly.
Table C.1 Setting Parameters for Drive Control from MEMOBUS/Modbus
Parameter
Name
Required Setting
b1-01
Frequency Reference Selection
2
b1-02
Run Command Selection
2
Refer to b1-01: Frequency Reference Selection on page 72
and
Refer to b1-02: Run Command Selection on page 73
for details on external reference parameter selections.
C.6 Drive Operations by MEMOBUS/Modbus
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
193
C
MEMOBUS/Modbus Communications
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