BONFIGLIOLI Vectron Agile, Руководство по связи

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Modbus Agile 02/2011 28
Protocol
7.3.2 Function Code 6, Write 16-Bit-Parameter
This function code is used to write the value of an integer or unsigned integer parameter in the inver-
ter.
Request 16 Bit parameter write:
Start Frame (RTU oder ASCII mode)
Address 1 Byte 1 – 0xF7 (=247)
Function Code 1 Byte 0x06
Start Address (Data Set / Para-No.) 2 Bytes 0x0000 – 0x963F
Register Value (Parameter Value) 2 Bytes 0 – 0xFFFF
CRC or LRC & Endframe
Response:
Start Frame (RTU oder ASCII mode)
Address 1 Byte 1 – 0xF7 (=247)
Function Code 1 Byte 0x06
Start Address (Data Set / Para-No.) 2 Bytes 0x0000 – 0x963F
Register Value (Parameter Value) 2 Bytes 0 – 0xFFFF
CRC or LRC & Endframe
Exception Response:
Start Frame (RTU oder ASCII mode)
Address 1 Byte 1 – 0xF7 (=247)
Error Code 1 Byte 0x86
Exception Code 1 Byte 2, 3 or 4
CRC or LRC & Endframe
Start Address
This field is used to store the parameter number and data set number. The parameter number ranges
from 0 – 1599 and is stored in the lower 12 bits; the data set number ranges from 0 – 9 and is stored
in the upper 4 bits.
e.g.: Parameter 372 (hex. 0x174), data set 2 (hex. 0x2) is stored as hex. 0x2174.
Start Address
Data Set Parameter number
Bits 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
For the above example:
Hex. 0 0 1 0 0 0 0 1 0 1 1 1 0 1 0 0
Bin. 2 1 7 4
Register Value
This field is used to store the 16-bit parameter value.
Note:
Parameter values with decimal places are transferred without the decimal point. Depending on the
number of decimal places, the values are multiplied by 10, 100 or 1000.
Example:
A current value of 10.3A is to be transmitted. The numerical value actually transmitted is 103, which
corresponds to 0x67 in HEX format.