2 MULTIPLE CPU SYSTEM

2.2 Starting Up the Multiple CPU System

This section describes a standard procedure to start up the Multiple CPU system.

2.2.1 Startup Flow of the Multiple CPU System

START

Definition of functions with Multiple CPU system

Control and function executed in each

CPU module are defined.

Application and assignment of device

Refer to Section 2.3

PLC CPU Motion CPU

When automatic refresh of the CPU shared memory is performed, the number of refresh points is continuously obtained.

Selection of module

Select the module to achieve the function with the Multiple CPU system.

Installation of module

Install the selected module on the main base unit and extension base unit.

Start-up of GX Developer

Start-up GX Developer (Ver. 8.48A or later).

Refer to the "Q173DCPU/Q172DCPU User's Manual"

Refer to the "Q173DCPU/Q172DCPU User's Manual"

Refer to the GX Developer Manual.

PLC CPU

PLC CPU

Creation of parameters, etc.

Create the parameter such as Multiple CPU setting and control CPU setting, and the PLC program.

Connection of PC to the PLC CPU module of CPU No. 1

Connect the PC that started

GX Developer to the PLC CPU module of CPU No. 1 with the RS-232 cable/ USB cable.

Multiple CPU system power ON

Turn ON the power of Multiple CPU system in the following state of PLC CPU module of CPU No.1.

RUN/STOP/RESET switch : STOP

Write of parameter and program

Write parameter and PLC program in the PLC CPU of CPU No. 1.

For PLC CPU other than CPU No. 1, select the applicable PLC CPU by specifying the connection.

Create the parameters for CPU No. 1 to 4 and PLC programs.

Refer to the "QCPU User's Manual" (Function Explanation/Program Fundamentals)".

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