Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 465

Operation error
There is no operation error.
If the CLOSE command (or OPEN command) is issued while a command pulse signal (TRUE) is output from
the output variable OPEN (or output variable CLOSE), the command pulse signals (TRUE) are output
simultaneously from the output variable OPEN and output variable CLOSE.
<When command pulse signals (TRUE) are output simultaneously from output variable OPEN and
output variable CLOSE>
OPEN command input signal from faceplate or
input OPEN_SET (Detected at rising edge)
Command pulse signal from output pin OPEN
(output variable OPEN)
CLOSE command input signal from faceplate or
input CLOSE_SET (Detected at rising edge)
Command pulse signal from output pin CLOSE
(output variable CLOSE)
When the output variable OPEN and output variable CLOSE are output directly to the external device, multiple
commands (OPEN command and CLOSE command) may be output simultaneously to the external device.
Not to output multiple commands to the external device simultaneously, create a program to output only either
one of the command pulse signals to the external device.
Command pulse period (DOT)
Command pulse period (DOT)
: Time when command pulse signals are output
simultaneously (TRUE)
13.3 ON/OFF Operation (2 Input/2 Output) (M+M_MVAL1)
t
t
t
t
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