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9 MAIN POSITIONING CONTROL
9.1.5 Control unit "degree" handling
When the control unit is set to "degree", the following items differ from when other
control units are set.
(1) Current feed value and machine feed value addresses
(2) Positioning control method when the control unit is set to "degree"
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When the control method is the absolute system, " Md.29 Current feed value"
becomes the ring address of 0 to 359.99999 ° .
If the control method is the absolute system, the address of " Md.30 Machine
feed value" does not become the ring address.
0°
(a) Absolute system
1) When the software stroke limit is invalid
Positioning is carried out in the nearest direction to the designated
address, using the current value as a reference.
(This is called "shortcut control".)
Example
1) Positioning is carried out in a clockwise direction when the current value is moved from 315° to 45°.
2) Positioning is carried out in a counterclockwise direction when the current value is moved from 45° to 315°.
Moved from 315° to 45°
315°
359.99999°
359.99999°
0°
0°
45°
315°
9 - 17
MELSEC-A
Moved from 45° to 315°
45°
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Troubleshooting
