Yaskawa SMC–4000 - Manual (Page 66)

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SMC–4000 User Manual
AI (After Input)
[Trippoint]
DESCRIPTION:
The AI command is used in motion programs to wait until after the specified input condition has occurred.
If n is positive, it waits for the input to go high. If n is negative, it waits for input to go low. To wait for a
transition from high to low or low to high, put two AI commands together. AI is only available for local
inputs. The AI command causes the corresponding program thread to go dormant until the specified logic
state is true. If the program thread must check other logic, use the
JP (Jump to Program Location) or IF – JS
(Jump to Subroutine) commands instead.
ARGUMENTS: AI +/-n where
n is a signed integer
USAGE:
RELATED COMMANDS:
@IN (Input) : Function to read digital input 1 through 8
II (Input Interrupt)
#ININT: Special label for input interrupt
EXAMPLES:
While Moving Yes Minimum Value 1
In a Program Yes Maximum Value 8
Command Line Yes Default Value ---
Can be Interrogated No Default Format ---
Used as an Operand No
#A Begin Program
AI 7 Wait until input 7 is high
SP 10000 Speed is 10000 counts/sec
AC 20000 Acceleration is 20000 counts/sec2
PR 400 Specify position
BG Begin motion
AI+ 7; AI- 7 Wait for falling edge on input 7
EN End Program