Mitsubishi MELSEC-A Series Reference Manual page 294

9. PROGRAMMING
PRECAUTIONS
(1)
(2)
(3)
(4)
To execute an RTOP instruction, always interlock with YnF and X
number of the master station that corresponds to the I/O number of the slot in which a
special function module is installed. It is first 2 digits of the 3-digit representation for
the first half link parameters 16 points of 32 occupied points.), and at the same time,
do not execute an RFRP or RTOP instruction at two or more positions within a single
special function module.
Turn ON/OFF YnF and X
The RTOP execution start signal must be always turned ON by the SET instruction.
If an OUT or PLS instruction is used, the RTOP instruction will not be executed
correctly.
Reset and initialize YnF and the RTOP execution start signal after the execution is
completed.
When failing to do so, reading cannot be executed again.
Refer to the manual for each special function module for addresses where each data
of the special function module is stored.
F as shown below:
(n+1)
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F (n: the device
(n+1)