INVT Goodrive3000 Series Operation Manual page 284

Goodrive3000 series medium voltage VFD
Table 9.4 Definition of the response identification flag PKW1
No.
0 No response
1 Transmitting the value of a parameter (one word)
2 Transmitting the value of a parameter (two words)
The task cannot be executed due to a fault and the fault number is returned:
0: Invalid parameter number.
1: The parameter is read only.
2: The value is out of the setting range.
3: Incorrect sub-index number.
4: Setting is disallowed. (Only reset is allowed.)
5: Invalid data type.
3 6: The task cannot be executed due to the operation status.
7: Request not supported.
8: Communication error.
9: An error occurred when writing to the fixed storage area.
10: Timeout occurred.
11: The parameter cannot be allocated to the PZD.
12: The bits of the control word cannot be allocated.
13: Other fault.
4 No permission to modify parameters.
PKW examples
Example 1: Reading the value of a parameter
To read the running frequency upper limit (of which the address is 4), you can set PKW1 to 1 and PKW2
to 4. The value is returned in PKW4.
Request (from master to VFD):
PKW1 PKW2
Request 00 01 00
Response (from slave to master)
PKW3 PKW4 CW CW
04 00 00 00 00 02 00
0004: Parameter address
0001: Request for reading parameter values
Function
PZD2 PZD3 ... PZD12
xx xx xx xx ... xx xx
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