Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 346

7 APPLICATION FUNCTIONS
(3) Program examples
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(a) Program for station number 3
When actually using the following program, provide interlocks in the
program referring to Section 6.1.
(b) Program for station number 15
When using the program below, provide interlocks in the program referring
to Section 6.1.
REMARKS
(1) The RECV instruction execution request flag corresponding to the channel
number used in data reception (SB00A0 to SB00A7) is not set.
(2) When the sequence program executes at high speed, the scan time may take
longer because the execution time of the interrupt program affects the
performance of the interrupt program.
(3) When multiple interrupts occur at the same time, the operation delay may occur.
(4) This function cannot be used during offline or online testing.
POINT
Since the RECVS instruction starts the interrupt program according to the
parameter settings, it is necessary to execute "EI" (Enable Interrupt) with the main
routine program. If the enable interrupt has not been executed at the data
receiving, the status of "channel being used" is maintained.
MELSEC-Q
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