Siemens SIMATIC S7-1200 Podręcznik - Strona 11

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3 Principle of Operation

3.1 Complete overview

Figure 3-1: USS instructions for S7-1200

Note

The instructions in the USS Communication folder are currently not suitable for

the S7-1200 in this application example.

The following figure shows the call structure of the program example.

Figure 3-2: Block call diagram for SIMATIC S7-1200

Main

[OB1]

Cyclic interrupt

[OB30]

The UssCyclic and UssCyclicInterrupt user blocks use optimized block access.

SINAMICS V20 at S7-1200/1500 via USS

Entry ID: 109480894,

V1.0,

UssCyclic

[FB1]

UssCyclicInterrupt

[FB2]

User program

09/2018

USS_DRV

[FB1071]

USS_PORT

[FC1070]

System blocks

InstUssCyclic

[DB1]

(instance DB of FB UssCyclic

)

InstUssDrv

[DB3]

(instance DB of FB USS_DRV

)

InstUssCyclicInterrupt

[DB2]

(instance DB of FB

UssCyclicInterrupt

)

Data blocks