Sequence Program Configuration & Execution Conditions; Sequence Program - Mitsubishi Electric MELSEC-Q Series User Manual

4 SEQUENCE PROGRAM CONFIGURATION & EXECUTION
CONDITIONS
4 SEQUENCE PROGRAM CONFIGURATION & EXECUTION CONDITIONS
Programs that can be executed by the Basic model QCPU are sequence programs
only.
This chapter describes the sequence program configuration and execution conditions.

4.1 Sequence Program

(1) Definition of sequence program
4 - 1
(a) A sequence program is created using sequence instructions, basic
instructions, and application instructions, etc.
X0 M0
T0
X1
X41
FROM
(b) There are 3 types of sequence program: main routine programs, sub-routine
programs, and interrupt programs.
For details regarding these programs, refer to the following sections of this
manual:
• Main routine programs
• Sub-routine programs
• Interrupt programs
MAIN
Main routine
program
P0
Sub-routine
program
I0
REMARK
For details regarding the sequence instructions, basic instructions, and application
instructions, refer to the " QCPU (Q Mode)/QnACPU Programming Manual
(Common Instructions)".
K100
T0
Y30
BIN K4X10 D0
H5 K0 D10 K1
: Section 4.1.1
: Section 4.1.2
: Section 4.1.3
FEND
RET
Interrupt
program
IRET
END
MELSEC-Q
Sequence instruction
Basic instruction
Application instruction
4 - 1
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