Mitsubishi Q Series Programming Guide

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4 SFC PROGRAM CONFIGURATION
MELSEC-Q
(4) 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.
CPU Module Model name
Number of Steps That Can Be
Executed Simultaneously in All Blocks
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
Q03UDCPU
Q04UDHCPU
Q06UDHCPU
Q13UDHCPU
Q26UDHCPU
Q03UDECPU
Q04UDEHCPU
Q06UDEHCPU
Q13UDEHCPU
Q26UDEHCPU
1280 steps 256 steps
POINTS
(1) The block START step (with END check) cannot be described immediately before the
coupling of a parallel coupling.
(The block START step (with END check) cannot be used for a wait.)
The block START step (without END check) can be described immediately before the
coupling of a parallel coupling.
(2) The execution status of each block can be checked at another block using the block
START/END bit (refer to Section 4.5.1) of the SFC information devices or the block
activation check instruction (refer to Section 4.4.3) of the SFC control instructions.

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