Fieldbus Scale - INVT Goodrive350-19 Series Operation Manual

Goodrive350-19 series VFD for crane
Function
of multi-step speed
External length value
External counting
value
Torque setting
VFD identification
code
Fault code
The Read/Write (R/W) characteristics indicate whether a function parameter can be read and written.
For example, "Communication-based control command" can be written, and therefore the command
code 06H is used to control the VFD. The R characteristic indicates that a function parameter can
only be read, and W indicates that a function parameter 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 high-order
bits
01

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, multiply 50.12 by 100 to obtain an integer 5012, and then 50.12 can
be represented as 1394H in the hexadecimal form (5012 in the decimal 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 "Detailed parameter
description" or "Default value". If there are n decimals in the value, the fieldbus scale m is the
th
n -power of 10. Take the following table as an example, m is 10.
Address
3013H 0–65535
3014H 0–65535
3015H -300.0–300.0% (Unit: 0.1%)
3016H
5000H
Meaning 8 low-order bits
0x08
0x09
GD
0x0a
0xa0
Data description
GD35 vector VFD
GD35-H1 vector VFD
GD300 vector VFD
GD350 vector VFD
-419-
Communication protocol
Meaning
R/W
R
R
R
R
R