IDEC FT1A Series User Manual

S MART AXIS P RO /L ITE U SER ' S M ANUAL FT9Y-B1378 5-33
5: S PECIAL F UNCTIONS
2. Select Catch Input in the Groups 1 through 4 pull-down list boxes. The Catch Input dialog box appears.
3. Select Catch Input Rising Edge or Catch Input Falling Edge in the pull-down list.
Catching Rising Edge of Input Pulse
Catching Falling Edge of Input Pulse
Note: When two or more pulses enter within one scan, subsequent pulses are ignored.
Example: Maintaining Catch Input
When a catch input is received, the catch input relay assigned to a catch input is turned on for only one scan. This example
demonstrates a program to maintain a catch input status for more than one scan.
Actual Input
ON
OFF
Catch Input Relay
ON
OFF
(M8090-M8095)
Note
END
Processed
1 scan time
Actual Input
ON
OFF
Catch Input Relay
ON
OFF
(M8090-M8095)
Note
END
Processed
1 scan time
Input I2 is designated as a catch input using the Function Area Settings.
When input I2 is turned on, special internal relay M8091 is turned on, and M0 is maintained in the self-
holding circuit.
When NC input M1 is turned off, the self-holding circuit is unlatched, and M0 is turned off.
M0 is used as an input condition for the subsequent program instructions.
M0
M8091
M0
M1 M0

IDEC FT1A Series Specifications

General

Brand	IDEC
Model	FT1A Series
Category	Controller
Language	English