7. APPLICATION INSTRUCTIONS
7
−
100
MELSEC-A
CAUTION
Provide interlock using the special registers mentioned below so that the RTOP instruction may
be executed when the data link with remote I/O stations is normal and parameter communication
is not being performed.
Remote I/O station normal/error judgment: D9228 to D9231
Parameter communication execution/non-execution judgment: D9224 to D9227
For details, refer to the type MELSECNET, MELSECNET/B Data Link System Reference Manual
(IB(NA)-66350).
Functions RTOP
(1) Writes data of "n3" points of the link registers (W ) starting with the one
specified at (S) to addresses starting with the one specified at "n2" of buffer
memory in the special function module of which I/O number is specified at "n1"
(the I/O number in the remote I/O station assigned by the master station).
(2) The link registers (W ) to be specified at (S) should be specified in the range
of parameter assignment from the master station to the remote I/O station.
For parameter setting, refer to POINT below.
(3) It is not allowed to use two or more RTOP instructions or to use the RTOP and
RFRP instructions simultaneously with a special function module which has the
same I/O number.
POINT
Provide interlock using X(n1+1E), X(n1+1F), Y(n1+E), and Y(n1+F) so that
other RTOP instructions may not be executed during data write to remote I/O
stations by the RTOP instruction.
(4) Y(n1+F) is ON during execution of the RTOP instruction. X(n1+1F) turns ON at
completion of the execution. Since Y(n1+F) remains ON after completion of the
RTOP instruction execution, turn it OFF by the sequence program.
(5) When the RTOP instruction cannot be executed due to error of specified special
function module, X(n1+1D) turns ON. If this is the case, check the specified
special function module. If Y(n1+D) is turned ON, X(n1+1D) turns OFF.
Write instruction
Y(n1+F) Y(n1+E)
H
K
K
RTOP 0140 10
W052 10
X(n1+1F)
X(n1+1E)
Содержание MELSEC-A series
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