Note-1: The area composed in the Multiple CPU high speed transmission area.
(Refer to Section "(3) Memory configuration of Multiple CPU high speed transmission area".)

2MULTIPLE CPU SYSTEM

(b)Example of using automatic refresh method

CPU No.1 (PLC CPU)

PLC program

SM400

INC D0

Y0

SM400

INC D1

Y0

END

 

 

 

 

 

 

 

 

 

 

 

 

CPU No.2 (Motion CPU)

 

 

 

 

 

 

 

 

 

 

 

 

CPU shared memory

 

 

CPU shared memory

 

 

 

 

 

 

 

Device memory

(Automatic refresh area (Note-1))

 

(Automatic refresh area (Note-1))

 

 

Device memory

D0

 

 

 

1)

 

 

 

 

 

 

 

 

 

3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2)

 

 

 

 

 

 

 

 

 

 

Refresh at the

 

 

 

 

 

 

 

 

 

 

 

 

CPU No.1

 

 

 

CPU No.1

 

 

 

 

 

 

 

 

 

 

 

timing of END

 

transmitting

 

 

 

 

transmitting

 

 

D2000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

processing

 

data

 

 

 

 

data

Refresh at the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

timing of Motion

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU main cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Multiple CPU high speed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

transmission in 0.88ms cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

 

CPU No.1 to CPU No.2

 

 

 

 

 

 

 

 

 

 

CPU No.1 to CPU No.2

 

Transmit D0

 

 

 

 

 

 

 

 

 

 

Receive D2000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1)Transmit the content of D0 to the automatic refresh area (Note-1)at the time of END processing by parameter setting.

2)Transmit the content of automatic refresh area (Note-1)to the other CPU by Multiple CPU high speed transmission at 0.88ms cycle.

3)Read the content of automatic refresh area (Note-1)at the time of Motion CPU main cycle and transmit it to D2000 by parameter setting.

.

(2) System configuration

Multiple CPU high speed transmission can be used only between CPU modules for the Multiple CPU high speed transmission installed in the Multiple CPU high speed main base unit (Q3DB).

The system configuration specification is shown in Table 2.4.

Table 2.4 System configuration to use Multiple CPU high speed transmission

Object

Restrictions

Base unit

Multiple CPU high speed main base unit (Q3 DB) is used.

 

QnUD(H)CPU is used for CPU No. 1.

CPU module

Q173DCPU/Q172DCPU and QnUD(H)CPU are used for CPU No. 2 to

 

CPU No. 4

"MULTI EXE. ERROR (error code: 7011) will occur if the power supply of Multiple CPU system is turned on without matching the system configuration shown in Table 2.4.

2 - 16