INVT Goodrive350 Series, Operation Manual

Page: 19 / 135

Communication extension card PROFIBUS communication card
-14-
Table 2-10 Task identification flag PKW1
Request No. (from the master to a slave) Response signal
Request
No.
Function Acceptance Rejection
0 No task 0 –
1 Requesting the value of a parameter 1, 2 3
2
Modifying a parameter value (one word)
[modifying the value only on RAM]
1 3 or 4
3
Modifying a parameter value (two words)
[modifying the value only on RAM]
2 3 or 4
4
Modifying a parameter value (one word)
[modifying the value on both RAM and
EEPROM]
1 3 or 4
5
Modifying a parameter value (two words)
[modifying the value only on both RAM and
EEPROM]
2 3 or 4
The requests #2, #3, and #5 are not supported currently.
Table 2-11 Response identification flag PKW1
Response No. (from a slave to the master)
Response No. Function
0 No response
1 Transmitting the value of a parameter (one word)
2 Transmitting the value of a parameter (two words)
3
The task cannot be executed and one of the following error number
is returned:
1: Invalid command
2: Invalid data address
3: Invalid data value
4: Operation failure
5: Password error
6: Data frame error
7: Parameter read only
8: Parameter cannot be modified during VFD running
9: Password protection
PKW examples
Example 1: Reading the value of a parameter
You can set PKW1 to 1 and PKW2 to 10 to read a frequency set through keypad (the address