Goodrive350-19 series VFD Communication protocols
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Function
Address
Data description
R/W
multi-step speed
External length
3013H
0
–
65535
R
External count value
3014H
0
–
65535
R
Torque setting
3015H
-300.0
–
300.0%(Unit: 0.1%)
R
Identification code
3016H
R
Fault code
5000H
R
The Read/Write (R/W) characteristics indicate whether a function can be read and written. For
example, "Communication-based control command" can be written, and therefore the command code
6H is used to control the VFD. The R characteristic indicates that a function can only be read, and W
indicates that a function can only be written.
Note:
Some parameters in the preceding table are valid only after they are enabled. Take the running
and stop operations as examples, you need to set "Running command channel" (P00.01) to
"Communication", and set "Communication running command channel" (P00.02) to the Modbus
communication channel. For another example, when modifying "PID setting", you need to set "PID
reference source" (P09.00) to Modbus communication.
The following table describes the encoding rules of device codes (corresponding to the identification
code 2103H of the VFD).
8 MSBs
Meaning
8 LSBs
Meaning
01
GD
0x08
GD35 vector VFD
0x09
GD35-H1 vector VFD
0x0a
GD300 vector VFD
0xa0
GD350 vector VFD
10.4.6 Fieldbus scale
In practical applications, communication data is represented in the hexadecimal form, but
hexadecimal values cannot represent decimals. For example, 50.12 Hz cannot be represented in the
hexadecimal form. In such cases, we can multiply 50.12 by 100 to obtain an integer 5012, and then
50.12 can be represented as 1394H (5012 in the decimal form) in the hexadecimal form.