Vicruns VD120 Series, Руководство пользователя

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VD120 Series Inverter User Manual Communication Protocol
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}
}
return(crc_value);
}
In logic ladder, CKSM calculates CRC value according to frame content, adopting table look-up
method, this method is simple in program, quick calculating speed, but with big occupying ROM
space. Please consider carefully in application with requirement on program space.
9.6.4 Communication Data Address Definition
This part is the content of the communication, used to control the operation of the inverter, inverter
status and related parameters setting.
Read and write functional code parameter (some function code which can not be changed, only for
the use or monitoring of manufacturers) :
Function code parameter address label rules:
The rule representation of function code group number and label for the parameter address:
High byte:F0~FF (group F), A0-AF (group A), B0-BF (group B), 70-7F (group U) low byte: 00 to FF
Such as: F3-12, address represented as F30C;
Note:
FP groups: neither read the parameters, and do not change the parameters;
U group: only can read, do not change the parameters.
When some parameters in converter is in operation, do not change; some parameters of the
frequency converter in any state, cannot be changed; change function code parameters, but also pay
attention to the range, units, and related instructions of parameters.
In addition, since the EEPROM is frequently stored, the service life of the EEPROM is reduced, so
some function code under the mode of communication, do not need to store, just change the value of
RAM.
If to F group of parameters, in order to realize the function, as long as this function code address high
F into 0 can be achieved.
If for A group of parameters, in order to realize the function, the function code as long as the address
of A high into 4 can be achieved.
Corresponding function code shown by the following address:
High byte: 00~0F (group F), 40~4F (group A), 50~5F (group b)
Low byte: 00 to FF
Such as:
Function code F3-12 is not stored in the EEPROM, address for 030C;
Function code A0-05 is not stored in the EEPROM, address for 4005;
The address that can only do write RAM, can not do the action read, as invalid address when reading.
For all the parameters, can also use the command code 07H to implement this feature.
Stop/run parameters section:
Communication Address Communication Content
Read-write
Property
(R/W)
1000H
Communiccation set value (-10000~10000)
(decimal)
R/W
1001H Running frequency R
1002H Bus voltage R
1003H Output voltage R