C.5 Drive Operations By Memobus/Modbus; Observing The Drive Operation; Controlling The Drive - YASKAWA A1000 Series Technical Manual

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-
• 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
are both linked by an OR operation.

◆ 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 in
Table C.1 Setting Parameters for Drive Control from MEMOBUS/Modbus
Reference Source
External Reference 1
External Reference 2
Refer to b1-01: Frequency Reference Selection 1 on page 136
page 137 for details on external reference parameter selections.
page 216 for instructions on how to select external reference 1 and 2.
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
).
Table C.1
Parameter
b1-01 Frequency Reference Selection 1
b1-02 Run Command Selection 1
b1-15 Frequency Reference Selection 2
b1-16 Run Command Selection 2
C.5 Drive Operations by MEMOBUS/Modbus
and from MEMOBUS/Modbus communications
must be adjusted accordingly.
Name
and Refer to b1-02: Run Command Selection 1 on
Refer to Setting 2: External reference 1/2 selection on
Required Setting
2
2
2
2
C
485