Alt (Alternate Output) - IDEC MICROSmart FC6A Series Ladder Programming Manual

10: D C
ATA ONVERSION

ALT (Alternate Output)

ALT
SOTU
Valid Devices
Device
D1 (Destination 1)
For valid device address ranges, see "Device Addresses" on page 2-1.
Since the ALT instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instruction must be used. For the SOTU
instruction and the SOTD instruction, see "SOTU and SOTD (Single Output Up and Down)" on page 4-28.
Example: ALT
ALT
SOTU
I0
ON
Input I0
OFF
ON
Output Q0
OFF
10-18
I
NSTRUCTIONS
When input is turned on, output, internal relay, or shift register bit assigned by D1 is turned on and
remains on after the input is turned off.
D1
*****
When input is turned on again, the assigned output, internal relay, or shift register bit is turned off.
The ALT instruction must be used with a SOTU or SOTD instruction, otherwise the assigned output,
internal relay, or shift register bit repeats to turn on and off in each scan.
Function
Bit to turn on and off
When input I0 is turned on, output Q0 assigned by device D1 is turned on and remains after input
D1 I0 is turned off.
Q0
When input I0 is turned on again, output Q0 is turned off.
FC6A S MICROS
ERIES MART
I Q M
— X X
L P M
ADDER ROGRAMMING ANUAL
R T C D P Constant
X — — — —
FC9Y-B1726
Repeat
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