Mitsubishi Q Series Programming Guide

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4 SFC PROGRAM CONFIGURATION
MELSEC-Q
(2) If another block is started by the parallel processing operation, the START source block and
START destination block will be executed simultaneously. (In the example below, processing
from step “n+1” will be executed simultaneously with block 1.)
Step
“n+1”
Step “n”
Transition
condition “b”
Transition
condition
Block 1 START
Transition
condition
Block 0
When condition “b” is satisfied at step “n”
execution, processing will proceed to step
“n+1” and block 1 will be started. Blocks “0”
and “1” will then be processed simultaneously.
(3) The following table indicates the number of steps that can be executed simultaneously in all
blocks and the maximum number of active steps in a single block.
If the number of simultaneously processed steps exceeds the value in the following table, an
error occurs and the CPU module stops processing.
CPU Module Model name
Number of Simultaneously
Processed Steps
Maximum Number of Active
Steps in Single Block
Basic mode QCPU
Universal model QCPU Q02UCPU
1024 steps 128 steps
High Performance model QCPU
Process CPU
Redundant CPU
Universal model QCPU Q03UCPU
Q04UDHCPU
Q06UDHCPU
Q13UDHCPU
Q26UDHCPU
Q03UDCPU
Q04UDEHCPU
Q06UDEHCPU
Q13UDEHCPU
Q26UDEHCPU
QnACPU
1280 steps 256 steps

Mitsubishi Q Series Specifications

General

I/O Points	Up to 4096 points
Communication	Ethernet, RS-232, RS-485
I/O Modules	Digital, Analog, Specialized
Programming Language	Function Block Diagram, Structured Text
Power Supply	24V DC, 100-240V AC
Operating Temperature	0°C to 55°C
Shock Resistance	147 m/s2 acceleration, 3 times in each of X, Y, and Z directions
Program Capacity	Up to 252K steps