Mitsubishi Q Series Programming Guide

4 - 33 4 - 33
4 SFC PROGRAM CONFIGURATION
MELSEC-Q
4.3.5 Precautions for creating operation output (step)/transition condition
programs
This section explains the precautions for creating operation output (step) and transition condition
programs.
(1) Step program
(a) Step program expression method
Since a step program cannot use contacts and instructions equivalent to contacts, the
operation output of an active step is executed when the transition condition is satisfied.
Also, a step attribute is used to hold the output or continue operation when the step is
activated.
A step program is expressed as a ladder circuit as shown below.
Output instruction
REMARKS
If a program is not created at a step, an error will not occur.
In this case, no processing is performed until the transition condition immediately following the
corresponding step is satisfied.

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