Mitsubishi Electric C80 Series Connection And Set Up Manual page 227

C80 Series Connection and Setup Manual
14 Setting the Position Detection System
(Note7) Automatic initialization cannot be started in the following cases. The operation message "Can't start" will
appear if starting is attempted.
- When "#0 Absolute posn set" is not set.
- When the "#2 Zero-P" setting is inappropriate.
- When the absolute position parameter "#2055 pushf" is not set.
- When "Z71 Abs encoder failure 0005" has occurred.
In the above cases, if the "#2 Zero-P" setting is inappropriate, this means that the relation of "#2 Zero-P" and
Zero return parameter "#2037 G53ofs" is inappropriate. That is, if "#2 Zero-P" is smaller than the "#2037
G53ofs", the machine end stopper will be located between the basic machine coordinate system zero point
and reference position; this disables automatic initialization. (Refer to the following left figure.)
If "#2 Zero-P " is set to "0", the machine end stopper direction is unpredictable; this also disables automatic
initialization. (Refer to the following right figure.)
Basic machine coordinate
system zero point
"#2 Zero-P"
Looking from the basic machine coordinate system zero point,
the reference position is located far beyond the machine end
stopper, thus the reference position return cannot be carried out.
IB-1501452-C
Reference position
Machine end stopper
(Mechanical basic
position)
Zero return parameter
#2037 "G53ofs"
196
Machine end
stopper
(Mechanical
basic position)
Basic machine coordinate
system zero point
If the "#2 Zero-P" setting is "0", the
basic machine coordinate system
zero point is located on the machine
end stopper.
The direction of axis movement is
thus unpredictable.