Fieldbus Ratio Values - INVT Goodrive200A Series Operation Manual

GD200A series VFD
Code high 8
Meaning
bit
01
Note: The code is consisted of 16 bits including high 8 bits and low 8 bits. High 8 bits mean the
motor type series and low 8 bits mean the derived motor types of the series. For example, 0110H
means Goodrive200A vector VFDs.

9.5.3 Fieldbus ratio values

The communication data is expressed by hex in actual application and there is no radix point in hex.
For example, 50.12Hz cannot be expressed by hex so 50.12 can be magnified by 100 times into
5012, so hex 1394H can be used to express 50.12.
A non-integer can be timed by a multiple to get an integer and the integer can be called fieldbus ratio
values.
The fieldbus ratio values are referred to the radix point of the setting range or default value in the
function parameter list. If there are figures behind the radix point (n=1), then the fieldbus ratio value
n
10
m is . Take the table as the example:
Function
code
Wake-up from sleep
P01.20
delay time
P01.21 Restart after power off
If there is one figure behind the radix point in the setting range or the default value, then the fieldbus
ratio value is 10. If the data received by the upper monitor is 50, then the "hibernation restore delay
time" is 5.0 (5.0=50÷10).
If MODBUS communication is used to control the hibernation restore delay time as 5.0s. Firstly, 5.0
can be magnified by 10 times to integer 50 (32H) and then this data can be sent.
After the VFD receives the command, it will change 50 into 5 according to the fieldbus ratio value
and then set the hibernation restore delay time as 5s.
Another example, after the upper monitor sends the command of reading the parameter of
Code low 8 bit
0x08
0x09
0x0a
GD
0x0b
0x0c
0x0d
Name
0.0–3600.0s (valid when P01.19=2)
0: Disable
1: Enable
VFD Write
address
command
GD100 simple vector VFDs
Details
Data
Parameters
address number
-142-
Communication protocol
Meaning
GD35 vector VFDs
GD35-H1 vector VFDs
GD300 vector VFDs
GD200A general VFDs
GD10 mini VFDs
Default
value
0.0s
0
CRC
check
Modify
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