Specifications

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7.4
7.4
7.4
7.4 Protocol
Protocol
Protocol
Protocol function
function
function
function
Different respond delay can be set through drive ’ s parameters to adapt to different needs. For RTU mode,
the respond delay should be no less than 3.5 bytes interval.
The main function of Modbus is to read and write parameters. The Modbus protocol supports the
following commands:
0x03 Read inverter ’ s function parameter and status parameters
0x06 Write single function parameter or command parameter to inverter
All drive ’ s function parameters, control and status parameters are mapped to Modbus R/W data address.
The data address of control and status parameters please refer to the following table.
Param
Param
Param
Param e
e
e
e ter
ter
ter
ter
Description
Description
Description
Description
Address
Address
Address
Address Meaning
Meaning
Meaning
Meaning of
of
of
of value
value
value
value
R/W
R/W
R/W
R/W
Feature
Feature
Feature
Feature
Control command 1000H
0001H: Forward
W/R
0002H: Reverse
0003H: JOG forward
0004H: JOG reverse
0005H: Stop
0006H: Coast to stop
0007H: Reset fault
0008H: JOG stop
Inverter status 1001H
0001H: Forward running
R
0002H: Reverse running