10: D
ATA
C
ONVERSION
I
NSTRUCTIONS
10-18 FC6A S
ERIES
MICROS
MART
L
ADDER
P
ROGRAMMING
M
ANUAL
FC9Y-B1726
ALT (Alternate Output)
Valid Devices
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
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.
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.
Device Function I Q M R T C D P Constant Repeat
D1 (Destination 1) Bit to turn on and off — X X X — — — — — —
When input I0 is turned on, output Q0 assigned by device D1 is turned on and remains after input
I0 is turned off.
When input I0 is turned on again, output Q0 is turned off.
Input I0
Output Q0
ON
OFF
ON
OFF
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