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MELSEC-Q
12 PROCEDURE FOR WRITING PROGRAMS TO HIGH PERFORMANCE
MODEL QCPU
12 PROCEDURE FOR WRITING PROGRAMS TO HIGH PERFORMANCE
MODEL QCPU
This chapter describes the procedure for writing programs created at the GX
Developer to the High Performance model QCPU.
12.1 Writing Procedure for 1 Program
This section describes the procedure for writing one program to the High Performance
model QCPU and executing it.
12.1.1 Items to consider when creating one program
In order to create a program, the program size, number of device points used, and the
program file name, etc., must be set in advance.
(1) Program size considerations
Check that CPU module's program capacity is adequate for storing the program
and parameter data.
The program capacities of the CPUs are shown below:
• Q02CPU : 28 k steps
• Q02HCPU : 28 k steps
• Q06HCPU : 60 k steps
• Q12HCPU : 124 k steps
• Q25HCPU : 252 k steps
If the CPU module capacity is only adequate for the program, the parameter data
should be stored in the standard ROM/memory card.
(2) Designating a program file name
The file name of the program to be stored in the High Performance model QCPU
must be designated.
This file name is used when writing the program and parameters from GX
Developer to the High Performance model QCPU, and when designating the
program to be executed in the High Performance model QCPU.
See Chapter 6 for details regarding file names.
(3) Designating devices
The number of devices required for the program must be determined.
See Chapter 10 for details regarding devices which can be used in the High
Performance model QCPU.
(4) Device initial value setting
Designate whether or not the device initial value settings are to be used in the
High Performance model QCPU devices and intelligent function modules.
See Section 10.13.2 for details regarding device initial values.
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