, it is necessary to set E09.00 to
E01.19=2)
E01.21
E01.20
E00.02 to
mple, the operation of running and stopping, it is necessary to set E00.01 to
ans vector VFDs.
Communication Protocol
142
Note:
when operate on the VFD with the table above, it is necessary to enable some parameters.
For exa
communication running command channel and set
MODBUS communication channel.
And when operate on "PID reference"
"MODBUS communication
setting".
The encoding rules for device codes (corresponds to identifying code 2103H of the VFD)
Code high 8
bit
Code low 8 bit
Meaning
01
0x08
vector VFDs
0x09
H1 vector VFDs
0x0a
vector VFDs
0x0b
simple vector VFDs
0x0c
general VFDs
0x0d
mini VFDs
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
me
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
m is
10
n
. Take the table as the example:
Function
code
Name
Details
Setting range Default value Modify
Wake-up from
sleep delay
time
0.0
–
3600.0s
(valid when
0.0
–
3600.0
0.0s
○
Restart after
power off
0: Disable
1: Enable
0
–
1
0
○
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.
VFD
address
Read
command
Parameters
address
Data
number
CRC
check