5.3 Description of Function Codes 5.3.12 y codes (Link functions)
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 frequently rewriting data via communication, data can be stored to the temporary memory instead of writing it to
the nonvolatile memory. By doing so, the number of times that data is written to the nonvolatile memory is
suppressed, preventing memory errors.
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).
Store into nonvolatile memory (Rewritable times are limited)
Write into temporary memory (Rewritable times are unlimited)
Save all data from temporary memory to nonvolatile memory (After all save, y97 data
returns to 1)
Bus function (Mode selection) (Refer to H30)
For details on setting the y98 bus function (mode selection), refer to the description of H30.
Loader link function (Mode selection)
Function code to switch the links to the inverter supporting loader software (FRENIC Loader). Rewriting y99 with
the inverter supporting loader software (FRENIC Loader) enables the set frequency and run command from the
inverter supporting loader software (FRENIC Loader). You do not need to use the keypad since the data is rewritten
from the inverter supporting loader.
If the operation command is configured to be given from the inverter supporting loader software, and if the computer
starts to go out of control during the operation and a stop command from the loader software is ignored, remove
the communication cable connected to the computer that runs the inverter supporting loader software, and connect
the keypad to set the y99 data to 0. By setting the y99 data to 0, the operation is isolated from the inverter supporting
loader software's commands, switching to the commands of inverter's own settings (such as function code H30).
The y99 data is not saved in the inverter; the setting is lost and returned to 0 when powered off.
From function codes H30 and y98
From function codes H30 and y98
Setting from FRENIC Loader
From function codes H30 and y98
From function codes H30 and y98
Command issued from FRENIC loader
Setting from FRENIC Loader
Command issued from FRENIC loader
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