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The No Origin Flag will be turned ON in the following cases:
• The power is turned ON and the machine parameter’s origin search method
isn’t set to “set origin at power on.”
• Data from the absolute encoder was not read properly for the absolute specifi-
cation axis.
• A wiring error, feedback pulse error, or current position counter overflow
resulted when the MC Unit is in origin search operation.
• G29 (ORIGIN UNDEFINED) was executed.
The origin will be fixed and the No Origin Flag will be turned OFF in the following
cases:
Absolute Specification Axis
• Data was read properly from the absolute encoder.
Incremental Specification Axis
• The power is turned ON and the machine parameter’s origin search method is
set to “set origin at power on.”
• An origin search operation is completed normally.
• A current position preset command is completed.
• A G54 function (CHANGE REFERENCE COORDINATE SYSTEM PV) is
executed.
The No Origin Flags for the Y axes (bit 03 in words n+19) operate in the same
way.
Signal The No Origin Flag settings have the following meanings.
Signal Meaning
1 ON when the location of the reference origin is fixed.
0 OFF when the location of the reference origin isn’t fixed.
Timing Chart
Origin Search Bit
(n+5 bit 01)
No Origin Flag
(n+16 bit 03)
Origin Search
6-5-58 Word n+16 Bit 04: Axis Operating Flag (X-axis)
This flag is turned ON when axis is operating. An operating axis is an axis that is
being given a command value to move the axis. For example, when the axis is
being operated with a trapezoidal curve, the axis is operating from the start of the
acceleration command to the end of the deceleration command. Use this flag to
determine when the axis has stopped after executing a deceleration stop com-
mand.
The Axis Operating Flags for the Y axes (bit 04 in words n+19) operate in the
same way.
Signal The Axis Operating Flag settings have the following meanings.
Signal Meaning
1 ON when an axis movement command is being executed.
0 OFF when an axis movement command isn’t being executed.
Interface Bit Specifics
Section 6-5
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