Vicruns VD300 Series, User Manual

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VD300 Series Inverter User Manual Communication Protocol
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AI3 input value 320FH 0.00V~10.00V R
HS pulse input
frequency
3210H 0.00kHz~100.00kHz R
Count value 3211H 0~65535 R
MS speed present
stage
3212H 0~15 R
Password verify 4000H 0~65535 W
9.6.5 Inverter Response when Communication in Error
In communication control, if communication operation command is in discrepancy (such as read-only
address to deal with write operation command), or communication operating address is in
discrepancy (such as the address is not existed or the address doesn’t enabled user operating); or
operand is in discrepancy(such as operand exceeding the setting range or operation communication
continuously reading, inverter continuous address quantity less than communication read of address
number). At this stage, inverter will return error message to HOST pc on real-time for reminding
communication error.
When inverter response to HOST pc, it use function code and error code to indicate if communication
operation is normal or abnormal. For normal response, inverter returns back a corresponding function
code and data address or sub-function code; for communication operation abnormal response,
inverter returned normal operation code with the highest bit setting as “1”, such as read command
03H, abnormal response as 83H; and write command 06H with its abnormal response as 86H. It
follows the error message code and CRC check code.
Communication error code is the response from inverter sent to HOST pc, its code and meaning as
below table:
Code Description Meaning
01H Illegal command Command sent is illegal
02H Illegal data address
The register address sent to inverter is illegal or
un-defined
03H Illegal data value
Inverter received data value exceeding enabled
range
04H Operation failure
Setting parameter in write operation is disabled
setting
05H Password error User password checking is not pass
06H Data frame error
The frame message sent from HOST pc, the
length of data frame is not correct, or RTU format
CRC checking error.
07H Parameter read only Write operation for read-only parameter
08H
Parameter run and cannot be
changed HOST pc change the parameters which cannot be
changed when inverter is run.
09H Password protection
HOST pc is reading or writing without password
unlock.
When communication controls inverter, if communication operation is normal, the data returned from
inverter in sequence order as inverter communication address, operation command byte, parameter
address, parameter data and CRC checking. Such as the 3000H of number 01 inverter address, write
in data is 1; then communication command is: 010630000001470A, and inverter returned data as:
010630000001470A
。
If change the write in data to 09H, then communication command is: