Delta MS300 Series User Manual page 770

 Pr.09-33 are defined on the basis of whether reference commands have been
cleared before the PLC operation
bit 0: Prior to PLC scanning procedures, acts on whether the target frequency has
been cleared to 0. This is written to the FREQ command when the PLC is
ON.
bit 1: Prior to PLC scanning procedures, acts on whether the target torque has
been cleared to 0. This is written to the TORQ command when the PLC is
ON.
bit 2: Prior to PLC scanning procedures, acts on whether speed limits in the
torque mode have been cleared to 0. This is written to the TORQ command
when the PLC is ON.
Example: When using r to write a program,
If we force M0 to 1, the frequency command is 20.00 Hz; but when M0 is
set to 0, there is a different situation.
Case 1: When the Pr.09-33 bit 0 is 0, and M0 is set as 0, then the frequency
command remains at 20.00 Hz.
Case 2: When the Pr.09-33 bit 0 is 1, and M0 is set as 0, then the frequency
command changes to 0.00 Hz
This is because when the Pr.09-33 bit 0 is 1 prior to PLC scanning procedures, the
frequency first reverts to 0.
When the Pr.09-33 bit 0 is 0, the frequency does not revert to 0.
Chapter 16 PLC Function ApplicationsMS300
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