The POS input module converts SSI position-encoder signals from the process into digital values for the S7-300.

You can select either:

• Cyclic encoder-value sensing

or

• Encoder-value sensing isochronous to the PROFIBUS DP cycle.

The recorded values can be processed directly in the STEP 7 program so that a direct reaction is possible to encoder values in moving systems.

In addition, the SSI encoder states can be frozen via two digital inputs of the module. This permits further time-critical applications in the sector of position detection.