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Page 18

2 Configuration and Programming of the SIMATIC S7-1200 in STEP 7 V13 (TIA Portal)

S7 communication between SIMATIC S7-1200 and SIMATIC S7-300
Entry ID: ID number, V1.0, 05/2014 17

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No. Action

4. In the "Load preview" dialog you click the "Load" button to start the loading procedure.

5. In the "Load results" dialog you enable the "Start all" action and click the "Finish" button to
terminate the loading procedure.

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4 Operation and Monitoring

S7 communication between SIMATIC S7-1200 and SIMATIC S7-300
Entry ID: ID number, V1.0, 05/2014 35

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Figure 4-3

4.2 Reading Data from the S7-1200 CPU

Monitor variables

In STEP 7 V13 (TIA Portal) you can monitor and modify the Send and Receive
data of the S7-1200 CPU in the variable table.

In the toolbar of the variable table you click the "Monitor All" button. The "Monitor
value" column displays the current values in the Send data area (DB1) and
Receive data area (DB2).

Page 37

4 Operation and Monitoring

S7 communication between SIMATIC S7-1200 and SIMATIC S7-300
Entry ID: ID number, V1.0, 05/2014 36

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Figure 4-4

Read data

In the "Modify value" column you enter the values for the Send data area which are
read from the S7-300 CPU and stored in the Receive data area of the S7-300
CPU. In the toolbar you click the "Modify all enabled values once and immediately"
button to transfer the modify values to the Send data area of the S7-1200 CPU.

Figure 4-5

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