WEG MVW3000 A0040 V023, User Manual

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MVW3000 | 9-11
9
Communication Networks
MVW3000 | 9-11
Bit.2 - RL1 status: idem.
Bit.3 - RL2 status: idem.
Bit.4 - RL3 status: idem.
4. Number of the parameters to be read:
Through this position, the reading of any inverter parameter can be defined. The number of the parameter to be
read must be programmed here, and its contents will be presented at the position 4 of the variables read from
the inverter.
5. Number of the parameter to be changed: (parameter contents modification).
This position operates together with the position 6, described next.
When no parameter has to be changed, then fill this position with the code 999.
Changing process sequence:
- Keep 999 in the position 5.
- Replace 999 by the number of the parameter to be changed.
- If no error code (124 to 127) is signalized in the Status Word, then replace the parameter number by 999, in order
to conclude the modification.
The modification can be verified via the HMI or by reading the parameter contents.
NOTE!
1. The command to change from scalar to vector control will not be accepted if parameters P0409 to
P0413 are set to zero. That should be done via HMI.
2. Do not program P0204 = 5, because in the factory default settings P0309 = Inactive.
3. P0204 and P0408 do not accept modification via network command.
4. The parameter contents must be kept by the master during 15.0 ms.
Send a new value or write in another parameter only after this time has elapsed.
6. Content of the parameter to be changed, selected at the position 5: (Number of the parameter to be changed)
The format of the values adjusted in this position must be the ones described in the manual. The values, however,
must be written without the decimal point, if this is the case. When the parameters P409 to P413 are modified,
small differences in the contents may occur when comparing the value sent via Fieldbus and the value read at the
position 4. (Parameter contents) or at the HMI, because of the truncating during the reading process.
9.1.6.3 Error Indications
During the Fieldbus reading/writing process the following error indications may occur and be informed at the
Status Word variable:
Status Word variable indications:
A0124 - An attempt to change a parameter that can be modified only with disabled inverter.
- Parameterization error.
A0125 - Caused by:
- Reading of non-existent parameter, or
- Writing on non-existent parameter, or
- Writing on P0408 and P0204.
A0126 - An attempt to write a value out of the permitted range.
A0127 - Caused by:
a) A function selected by the Control Word has not been programmed for Fieldbus, or
b) Command of a digital output that has not been programmed for Fieldbus, or
c) An attempt to write in a read-only parameter.
The indication of the listed errors will be removed from the Status Word when the indented action is sent correctly,
except for A127 (
“b” case), whose reset is performed writing in the Control Word.