Omron RX2 Series User Manual page 510

8 Applied Settings
Shortest Position Control
When the [AE-56] positioning mode selection is set to 01 (without limit), the rotation direction is deter-
mined so that the moving distance to a target position is the shortest for applications such as a turnta-
ble.
(Application example) A turntable with eight positioning points
Assume a case of moving from the current position (1000 pulse) to the target position (6000 pulse).
When [AE-56] = 00 (with limit), Since (target position) - (current position) = +5000 pulse, the rotation is
in the forward direction.
When [AE-56] = 01 (without limit), the move is in the reverse direction with the shorter moving distance
comparing the forward and reverse directions.
Moving distance in the forward direction: +5000 pulse
Moving distance in the reverse direction: -3000 pulse
Current
position
1000
2000
3000
For the above example, Set the [AE-52] forward rotation side position range designation = 7999 and
[AE-54] reverse rotation side position rang designation = 0.
Also, each positioning point is required to be set in this range.
Depending on the setting for the position range designation, the following settings are also allowed.
[AE-52]=3999
[AE-53]=-4000
Current
position
-3000
-2000
-1000
Precautions for Correct Use
• When [AE-56] = 01, the [E104] position control range error does not occur.
• In the upper case, when moving the position of 7000 pulse to that of 1000 pulse, the forward
rotation side position range (7999) is exceeded, however, the current position monitor gets
back to 0.
8 - 110
For AE-56 = 01
0
Target
position
6000
5000
For AE-56 = 00
4000
For AE-56 = 01
-4000
3000
Target
position
2000
1000
For AE-56 = 00
0
High-function General-purpose Inverter RX2 Series User's Manual