User`s manual

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MELSEC-Q
6 INSTRUCTION LIST
6.2 Functions
6.2.1 I/O control instruction
Table 6.2 I/O Control instruction
Category
Instruction
Symbols
Symbol Processing Details
Number of
Basic Steps
See for
Descript
ion
S.IN
S.IN
S1 D1
S2 D2
Conducts the input data (PV)
Upper/lower limit check, input
limiter processing, engineering
value conversion, and digital filter
processing.
78- 1
S.OUT1
S.OUT1
S1 D1
S2 D2
Calculates the MV (0 to 100%)
from the input data (MV),
processes the upper and lower
limit and Change rate limiter
processing, and conducts output
on time conversion.
88- 6
S.OUT2
S.OUT2
S1 D1 S2 D2
Performs change rate,
upper/lower limiter processing
and output on time conversion
from the input data (MV).
88-12
S.MOUT
S.MOUT
S1 D1
S2 D2
Reads the MV of the loop tag
memory and performs output
conversion and alarm clear
processing.
88-17
S.DUTY
S.DUTY
S1 D1
S2 D2
Changes the ON/OFF rate within
a given cycle in proportion to the
input data (0 to 100%) and
outputs the result.
88-21
S.BC
S.BC
S1 D1
S2 D2
Compares the input data with the
set value and outputs bit data as
soon as the input data reaches
the set value.
78-28
I/O control
instruction
S.PSUM
S.PSUM
S1 D1
S2 D2
Integrates the number of input
pulses and outputs the result.
88-32
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