Drive parameters will apply to the settings when the drive is running during MEMOBUS/Modbus communications. This section gives information about the available functions and their related parameters.

Executable Functions

A PLC can do these operations with MEMOBUS/Modbus communications. Parameter settings (except H5-xx) do not have an effect on the availability of these operations.

  • Monitor the drive status and operate the drive

  • Set and view parameters

  • Fault Reset

  • Multi-function input setting (The input command from MEMOBUS/Modbus communications and MFDI terminals (S1 to S8) are linked by a logical OR operation.)

Drive Control

Select the external command that sets the frequency references and motor run/stop with MEMOBUS/Modbus communications. Use the information in Table 1 to set the parameters as specified by the application.

Table 1. Necessary Parameter Settings for Drive Control from MEMOBUS/Modbus

LOCAL Control Selected

No.

Name

Setting Value

External reference 1

b1-01

Frequency Reference Selection 1

2 [Memobus/Modbus Communications]

b1-02

Run Command Selection 1

2 [Memobus/Modbus Communications]

External reference 2

b1-15

Frequency Reference Selection 2

2 [Memobus/Modbus Communications]

b1-16

Run Command Selection 2

2 [Memobus/Modbus Communications]

For more information about operation mode selection, refer to [Frequency Reference Selection 1] and b1-02 [Run Command Selection 1]. Refer to H1-xx = 2 [MFDI Function Select = External Reference 1/2 Selection] for more information about external commands.