Siemens Simatic S7-400

Siemens Simatic S7-400

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Special functions of a CPU 41x

3.2 Multicomputing

S7-400 Automation System, CPU Specifications

3-4 Manual, 10/2006, 6ES7498-8AA04-8BA0

Example

The following figure shows an automation system operating in multicomputing mode. Each

CPU can access the modules assigned to it (FM, CP, SM).

P

S

C

P

U

1

C

P

U

3

C

P

U

4

C

P

U

2

I

M

1

I

M

2

I

M

3

I

M

I/O

I

M

I/O

I

M

I/O

I

M

I/O

I

M

CP, FM,

I/O

I

M

CP, FM,

I/O

I

M

CP, FM,

I/O

I

M

CP, FM,

I/O

I

M

I/O

I

M

I/O

I

M

I/O

I

M

I/O

I

M

CP, FM,

I/O

I

M

CP, FM,

I/O

I

M

CP, FM,

I/O

I

M

CP, FM,

I/O

Central rack

Expansion rack

Segment

Figure 3-1 Example of multicomputing

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