Precautions - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.3 Thread Recutting

14.3.4 Precautions

(1) Stored positions are deleted when the power is turned OFF. The thread recutting operation must be reperformed from the
beginning after the power is turned back ON.
(2) To store the thread groove position, the spindle to be stored after the power is turned ON must be finished with the Z
phase detection.
(3) Align the direction of the lead axis during the thread recutting operation with the direction of movement of the original lead
axis. When performing a processing in the reverse direction of movement, the area that received thread cutting process-
ing cannot be precisely shaved.
(4) If the axis length (axis with the largest amount of movement) or the amount of movement of the thread recutting lead axis
are the same lengths (movement angle: 45 degrees), the lead axis becomes the axis with the smallest axis number.
(5) The thread recutting operation only supports direct acceleration and deceleration and software acceleration and deceler-
ation. Thread recutting cannot be correctly performed if the acceleration/deceleration mode is set to either the primary
delay or exponential function acceleration.
(6) Use the tool for performing thread recutting when storing the thread groove position. Threads may not be cut correctly if
the stored tools or other processing conditions are different when thread recutting.
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