Fieldbus Scale - INVT Goodrive350 Series Operation Manual

Goodrive350 series high-performance multifunction VFD
Function
high-speed pulse 1
Read input of
high-speed pulse 2
Read current step of
multi-step speed
External length
External count value
Torque setting
Identification code
Fault code
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
01

9.4.6 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.
In the process of multiplying a non-integer by a multiple to obtain an integer, the multiple is referred to
as a fieldbus scale.
The fieldbus scale depends on the number of decimals in the value specified in "Description" or
"Default value". If there are n decimals in the value, the fieldbus scale m is the n
the following table as an example, m is 10.
Address
3011H
3012H 0–15
3013H 0–65535
3014H 0–65535
3015H -300.0–+300.0% (unit: 0.1%)
3016H
5000H
Meaning 8 LSBs
GD
Data description
0x08
0x09
0x0a
0xa0
-278-
Communication
Meaning
GD35 vector VFD
GD35-H1 vector VFD
GD300 vector VFD
GD350 vector VFD
th
-power of 10. Take
R/W
R
R
R
R
R
R
R