Chapter 4 Auxiliary And Applied Functions; Limit Switch Output Function; Operations - Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual

4
AUXILIARY AND APPLIED FUNCTIONS
4.1

Limit Switch Output Function

This function is used to output the ON/OFF signal corresponding to the data range of the watch data set per output device.
Motion control data or optional word data can be used as watch data.(Page 90 Limit output data setting)
A maximum output device for 64 points can be set regardless of the number of axes.

Operations

Limit switch output function
ON output to an output device is made while the watch data value is in the ON region set with lower limit value and upper limit
value in the limit switch output function. Up to two ON regions can be set for each limit output setting data.
• Lower limit value, upper limit value and watch data value are handled as signed data. ON output region where an ON
output is made to the output device is governed by the magnitude relationship between lower limit value and upper limit
value as indicated below.
Relationship between lower limit value
and upper limit value
Lower limit value < Upper limit value
Lower limit value > Upper limit value
Lower limit value = Upper limit value
4 AUXILIARY AND APPLIED FUNCTIONS
88
4.1 Limit Switch Output Function
ON output region
Lower limit value  (watch data value) < Upper limit value
Output device
OFF
Upper limit value
ON section setting
Lower limit value
Watch data value
Lower limit value ≤ (Watch data value) < Upper limit value
Lower limit value  (watch data value)
(Watch data value) < Upper limit value
ON
Output device
Lower limit value
ON section setting
Upper limit value
Watch data value
(Watch data value) < Upper limit value
Output OFF in whole region
Output device
OFF in whole region
ON section setting Lower limit value Upper limit value
Watch data value
ON
OFF
Lower limit value ≤ (Watch data value)
OFF
ON