12
- 1
12.1 Basic Model QCPU
12.1.1 Items to be examined for program creation
12
PROCEDURE FOR WRITING PROGRAM TO CPU
MODULE
CHAPTER12 PROCEDURE FOR WRITING PROGRAM TO
CPU MODULE
This chapter describes the procedure for writing program created at the GX Developer to
the CPU module.
The CPU module startup procedure is not described in this manual.
Refer to the following manuals for the CPU module startup procedure.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
QCPU User's Manual (Multiple CPU System)
QnPRHCPU User's Manual (Redundant System)
12.1 Basic Model QCPU
12.1.1 Items to be examined for program creation
To create a program with the Basic model QCPU, the program capacity, the number of
device points used, etc. must be determined in advance.
(1) Program size considerations
Examine whether programs and parameters can be stored within the program
capacity executable in the used CPU module. (
The program capacities executable in CPU modules are shown in Table12.1.
(2) Applications of devices and setting of their numbers of points
Consider the applications of the devices used in a program and their number of
points. (
(3) Device initial value setting
Set the data necessary as initial values to the device memory of the Basic model
QCPU and the buffer memory of the intelligent function module.
(
(4) Boot operation considerations
When performing boot operation, make the boot file setting of PLC parameter.
(
Section 5.1.5, Section 12.1.4)
Table12.1 Program capacity of Basic model QCPU
CPU module
Program capacity
Q00JCPU
8k steps (32k bytes)
Q00CPU
8k steps (32k bytes)
Q01CPU
14k steps (56k bytes)