Siemens SIMATIC S7 Configuration And Programming Manual page 20

Hide thumbs Also See for SIMATIC S7:

Table of Contents

How to Configure I-Slave to I-Slave Communication

The figure below illustrates the configuration procedure for the address areas in the

previous figure.

Requirement:

You have created a project in STEP 7.

1. Create a station in your project (in SIMATIC Manager, for example, an S7-300

station).

2. Assign a CPU with fail-safe capability to this station (in HW Config, from the

hardware catalog).

3. Configure this CPU as a DP slave (in HW Config, in the "Operating Mode" tab

of the Object Properties for the DP interface of the CPU).

4. After steps 1 to 3, configure a further DP slave (I-slave).

5. Create another station and assign a CPU with fail-safe capability (see steps 1

and 2).

6. Configure this CPU as a DP master (in HW Config, in the "Operating Mode" tab

of the Object Properties for the DP interface of the CPU).

Note: The CPU of the DP master can be an F-CPU or a standard CPU.

7. In the hardware catalog, under "Configured stations," select the station type of

one I-slave (for example, the "CPU 31x") and place it on the DP master

system.

8. Link the I-slave to the DP master in the Connection dialog box that opens

automatically.

9. After steps 7 and 8, link the second I-slave to the DP master.

You can now specify the address areas for the safety-related I-slave to I-slave

communication:

10. In the "F-Configuration" tab of the Object Properties of I-slave 1, select "New."

11. In the next dialog, make the following entries for the receive connection from

I-slave 2 for our example:

For "Mode: F-MS-R" (receive over fail-safe I-slave to I-slave

communication)

for "DP partner (sender): DP address: 2: Slave; address (LADDR): 130"

For "local (receiver): address (LADDR): 128"

Accept the defaults for the other parameters in the dialog.

Product Information for the S7 Distributed Safety, Configuring and Programming Manual

A5E00169432-02

Table of Contents