1-2
This manual describes the common instructions required for programming of the QCPU and
LCPU.
"Common instructions" are all instructions except for dedicated instructions for such intelligent
function modules as QJ71C24N and QJ71E71-100; PID control instructions; SFC instructions;
ST instructions; instructions for socket communication features; trigger logging instructions for
the LCPU; and dedicated instructions for LPCU positioning/counter functionality.
1.1 Related Programming Manuals
Before reading this manual, check the functions, programming methods, devices and others that
are necessary to create programs with the CPU in the manuals below:
• QnUCPU User's Manual (Function Explanation, Program Fundamentals)
• Qn(H)/QnPH/QnPRHCPU User's Manual (Function Explanation, Program Fundamentals)
• MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals)
(1) Basic model QCPU
This manual
Describes SFC.
Qn(H)/QnPH/
QnPRHCPU
User's Manual
(Function Explanation,
Program
Fundamentals)
Explains the functions,
programming methods,
devices and others that
are necessary to create
programs with the CPU.
MELSEC-Q/L
Programming
Manual (Common
Instructions)
Describes the instructions
other than those described
in the manuals on the right.
MELSEC-Q/L/
QnA Programming
Manual
(PID Control
Instructions)
Describes the instructions
to perform PID control.
MELSEC-Q/L/
QnA Programming
Manual (SFC)
MELSEC-Q/L
Programming
Manual
(MELSAP-L)
Describes MELSAP-L.
MELSEC-Q/L
Programming
Manual
(Structured Text)
Describes the ST language.