Example 3: Write data 2 to parameter P0804
To write data to P0804, request ID is set to 2 (Modify parameter value - word), Para Page Select should be set because the parameter address is greater than 2000. The address of P0804 is 0x0804, which is 2052 in decimal, if set Page Select to 1 (bit 15 of IND is 1), then the Basic PNU is 2052 – 1*2000 = 052 (0x34), thus, the data sequence are as follows:
Master | : 2034800000000002 | write data to P0804 |
: 1034800000000002 |
|
Request
Word 1 (PKE) 2034
Word 2 (IND) 8000
Word 3 (PWE1) 0000
Word 4 (PWE2) 0002
Response
Word 1 | (PKE) | 1034 |
|
|
|
Word 2 | (IND) | 8000 |
|
|
|
Word 3 | (PWE1) | 0000 |
|
|
|
Word 4 | (PWE2) | 0002 |
|
|
|
All parameters values in VFD series Drives are
NOTE:
VFD series Drives will write the data to EEPROM. When using PKW to change the value of parameter, the data will be written to EEPROM directly. However, if this
action is too often, the EEPROM will have no capability of directly saving data.
So please pay close attention on it.
Example 4: Read diagnostic data
User can use the special address to read the current diagnostic data. Please refer to Section 6.2 for details. The diagnostic address starts from 0x7500 to 0x7504 (5 words). To read diagnostic data in these addresses, request ID is set to 1, Para Page Select should be set because the parameter address is greater than 2000. The address 0x7500, which is 29952 in decimal, if set Page Select to 14, then the Basic PNU is
Master - >
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