70 Series Maintenance Training Manual - Automation Service Srl

2. Maintenanace Screens
2.3 Absolute Position Setting Screen
(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 "#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 "#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"
Machine end stopper
(Mechanical basic
position)
Reference
position
Machine end stopper
(Mechanical basic
position)
#2037 "G53ofs"
Basic machine coordinate
system zero point
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.
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.
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