Mitsubishi Electric Melsec Q Series User Manual page 278

8
DEDICATED INSTRUCTIONS
(3) Execution timing
(4) When mounted on MELSECNET/H remote I/O station
(5) Transmission delay time when using a dedicated instruction
(6) QCPUs available when using dedicated instructions
8
- 3 8.1 Precautions for Dedicated Instructions
Execute the BBLKRD and BBLKWR instructions all the time.
While the QJ71PB92V is implementing the data consistency function, the dedicated
instruction is not processed (not executed). (
Therefore, I/O data may not be read or written in a program where either of the
instructions is executed only once at the rising or falling edge of the pulse.
Dedicated instructions are not executable when the QJ71PB92V is mounted on a
MELSECNET/H remote I/O station.
Use of the data consistency function increases the transmission delay time.
( Section 3.5.2)
For QCPUs supporting the data consistency function, refer to Section 2.1.
Section 4.5)