5.3 Description of Function Codes
5-280
y21 to y36
Built-in CANopen communication setting
For details, refer to Chapter 9 “9.2 CANopen Communication.”
y95
Data clear processing for communications
If any of the communication error alarms (
er8
,
erp
,
er4
,
er5
,
ert
) occurs in RS-485, CANopen
communication or bus option, the data of communication command function codes (S codes) can automatically be
cleared.
Since the frequency and operation commands are also disabled when the data is cleared, the inverter does not
start unintentionally when an alarm is released.
y95 data Function
0
When a communication error alarm occurs, the function code Sxx data is not cleared
(compatible with the conventional mode).
1
When a communication error alarm occurs, the function codes S01, S05 and S19 data is
cleared.
2
When a communication error alarm occurs, the bits assigned in function code S06 for
operation command is cleared.
3 Clear operations of 1 and 2 above are performed.
y97
Communication data storage selection
The inverter memory (non-volatile memory) has a limited rewritable times (100 thousand to 1 million times). If the
count immoderately increases, the data cannot be modified or saved, causing a memory error.
If the data should frequently be overwritten via communication, it can be written in the temporary memory instead
of the non-volatile memory. This allows to save rewritable times to the non-volatile memory, which can avoid a
memory error.
If y97 is set to “2”, the data written in the temporary memory is stored (All Saved) in the non-volatile memory.
To change the y97 data, it is necessary to press the + / keys (simultaneous keying).
y97 data Function
0 Store into nonvolatile memory (Rewritable times are limited)
1 Write into temporary memory (Rewritable times are unlimited)
2
Store all data from temporary memory to nonvolatile memory
(After storing all data, the y97 data return to 1)
y98
Bus function (Mode selection) (Refer to H30)
For details on setting the y98 bus function (mode selection), refer to the description of H30.
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