Omron CS1W-MCH71 Operation Manual page 607

Coordinate System
Software Limit Range
Specification
P3AA04 = 0 The entire area is the operating range.
P3AA04 = 1 Lower than [P3AA02: + direction software limit] is the operating range.
Higher than [P3AA03: − direction software limit] is the operating range.
P3AA04 = 2
P3AA04 = 3 The area between [P3AA03] and [P3AA02] is the operating range.
P3AA03 < P3AA02
P3AA04 = 3 The entire area is the operating range.
P3AA03 = P3AA02
P3AA04 = 3 The entire area is the operating range.
P3AA03 > P3AA02
Note
9-3-4 Absolute Value Detection Function
Relation Between
Coordinate System and
Absolute Value Detection
Function
Using as Limited Length
Axis
562
Operation (Shaded area is the operating range.)
P3AA03
P3AA03
P3AA03
←
P3AA03
←
P3AA02
Meaning of arrows.
→ : The alarm [3005h: Positive direction software limit] occurs.
← : The alarm [3006h: Negative direction software limit] occurs.
• The absolute encoder stores the multi-turn data in the internal battery
backup memory. Therefore, the origin on the coordinate system can be
defined without executing an origin search after the power is turned ON.
• In the MC Unit, when the bit [ABS Origin Setting] is turned ON, the rela-
tions between the absolute data read from the absolute encoder when
communications were established and the coordinate system managed in
the Unit will be saved in the Flash memory.
• When using an axis as the limited length axis, make sure to operate the
axis within the range where the multi-turn data is not reset.
• When the servo parameter [Pn205: Multi-turn limit setting] is 65535
(default setting), the multi-turn data will change as shown below:
Multi-turn data
32767
0
−32768
• There will be no problem if the axis is used within the range where the
multi-turn data is between –32768 to 32767. However, if the power is
turned OFF once, and ON again when the axis is outside of the range, the
present position cannot be read correctly. No alarm will occur.
P3AA02
P3AA02 = P3AA03
Section 9-3
P3AA02
P3AA02
→
P3AA02
→
P3AA03
Rotation amount