5.4 Details of Function Codes
5-276
y99
Loader Link Function (Operation Selection)
This is a link switching function for inverter support loader. By rewriting y99 by the inverter support loader
(FRENIC loader), frequency command and operation command from the inverter support loader become
effective. Since the data are rewritten by the inverter support loader, no keypad operation is required.
While the inverter support loader is selected as the source of the run command, if the computer runs out of
control and cannot be stopped by a stop command sent from the loader, disconnect the RS-485
communications cable (port 1) or the USB cable, connect a keypad instead, and reset the y99 data to "0."
When the y99 data are set to 0, the command from the inverter support loader is detached, and the
command is switched to the command by the own setting of the inverter (function code H30, etc.).
Note that the y99 data are not saved to the inverter. When the power is turned off, the data in y99 is lost and
reset to "0."
Table 5.4-198
Function
Data for y99
Frequency Command Run Command
0
Follow function codes H30 and y98 Follow function codes H30 and y98
1
Command from the FRENIC loader Follow function codes H30 and y98
2
Follow function codes H30 and y98 Command from the FRENIC loader
3
Command from the FRENIC loader Command from the FRENIC loader
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