Basic Model Qcpu; Items To Be Considered For Creating Programs - Mitsubishi 00JCPU User Manual

CHAPTER11 PROCEDURES FOR WRITING PROGRAM TO
CPU MODULE
This chapter describes procedures for writing a program created by GX Developer to the CPU module.
Remark
For procedures for starting the CPU module, refer to the following.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
When perform communication between a programming tool and a CPU module through GOT or a network module, check
the PLC type because the modules could be connected with wrong model names. If the modules are connected with wrong
model names, data may not be written or read properly.

11.1 Basic Model QCPU

11.1.1 Items to be Considered for Creating Programs

To create a program, the number of device points, size, and file name of the program must be predetermined.
(1) Program size
Check whether the total size of programs and parameters are within the program size executable in the CPU
module used. (
Table11.1 provides the program size executable in each CPU module.
Q00JCPU
Q00CPU
Q01CPU
(2) Setting the applications of devices and the number of device points
When creating multiple programs, determine a unit (process/function) for structuring the programs. (
CHAPTER 9)
(3) Setting the initial device value
Set data necessary as initial values to the device memory of the Basic model QCPU and the buffer memory of the
intelligent function module. (
(4) Setting boot operation
When storing a program to the standard ROM, perform boot operation before executing the program.
Before boot operation, configure the settings in the Boot file tab of the PLC parameter dialog box.
( Section 5.1.5, Section 11.1.4)
CHAPTER11 PROCEDURES FOR WRITING PROGRAM TO CPU MODULE
Section 5.4.3)
Table11.1 Program size of the Basic model QCPU
CPU module
Section 6.27)
Program size
8k steps (32k bytes)
8k steps (32k bytes)
14k steps (56k bytes)
1
2
11
4
5
6
7
8
11 - 1