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.
u
Observing the Drive Operation
PLCs can perform the following actions with MEMOBUS/Modbus communications:
• observe drive status and drive control terminal status
• read and write parameters (not H5-
oo
)
• reset faults
• set multi-function inputs
Note:
Input settings from the input terminals (S1 to S8) and from MEMOBUS/Modbus communications are both linked by a logical OR operation.
u
Controlling the Drive
Select an external reference and adjust the parameters in
accordingly to start and stop the drive or set the frequency
reference using MEMOBUS/Modbus communications.
Table C.2 Setting Parameters for Drive Control from MEMOBUS/Modbus
Reference Source
Parameter
Name
Required Setting
External Reference 1
b1-01
Frequency Reference Selection 1
2
b1-02
Run Command Selection 1
2
External Reference 2
b1-15
Frequency Reference Selection 2
2
b1-16
Run Command Selection 2
2
Refer to b1-01: Frequency Reference Selection 1 on page 143
Refer to b1-02: Run Command Selection 1 on page
for details on external reference parameter selections.
C.5 Drive Operations by MEMOBUS/Modbus
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
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C
MEMOBUS/Modbus Communications
