Cautions On An Over Limit Switch - Panasonic FPG Series Technical Manual

FP∑ Positioning Unit

11.5 Cautions on an Over Limit Switch

A over limit input valid for a Jog operation, Home return (including Home search) and Pulser input is the
one logically found in the direction of the table movement. i.e. if an Over limit switch (-) is input for a
movement in (+) direction or an Over limit switch (+) is input for a movement in (-) direction, the table will
not stop. Please observe the followings;
- Before startup
Please make sure that an Over limit switch (+) is set in the direction of the elapsed value increment and
an Over limit switch (-) in the direction of the elapsed value decrement.
- When a switch is not set in the correct direction
The followings might be a cause. Check your settings and correct them;
1) An Over limit switch, (+) or (-), is not set in a correct direction.
2) CW/CCW output method is set reverse for the connection of the Positioning unit and the motor
driver.
3) A Sign input logic is set reverse for the connection of the Positioning unit and the motor driver.
4) The control codes are to specify the reverse direction of the rotation for the pulse output (forward or
reverse) in the program.
Pulser Input Operation
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