INVT GD300-004G-4, Руководство по эксплуатации

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Goodrive300 inverters Communication protocol
252
High 8 bit Meaning Low 8 bit Meaning
0x0a GD300 vector inverter
0x0b GD100 simple vector inverter
0x0c GD200 universal inverter
0x0d GD10 mini inverter
0x0e GD800 PWM rectifier
0x0f GD800 PWM inverter
10.4.5 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 can not 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 refered 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 m is
10
n
. Take the table as the example:
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 inverter 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
hibernation restore delay time ,if the response message of the inverter is as following: