Siemens SIMATIC ET 200S Operating Instructions Manual page 236

1SSI
4.3 Example: Starting 1SSI
Testing
Use Monitor/Modify Variables to monitor the encoder value and the direction indicator.
1. Select the "Block" folder in your project. Choose the "Insert > S7 Block > Variable Table"
2. Open the VAT 1 variable table, and enter the following variables in the "Address" column:
3. Choose "PLC > Connect To > Configured CPU" to switch to online.
4. Choose "Variable > Monitor" to switch to monitoring.
5. Switch the CPU to RUN mode.
6. Change the position of the SSI encoder.
Result
You can now see that:
● The UP LED or the DN LED on the 1SSI is on, depending on the direction in which you
● The encoder value in the block changes.
236
menu command to insert the VAT 1 variable table, and then confirm with OK.
DB1.DBD8 (encoder value)
DB1.DBX12.0 (UP status)
DB1.DBX12.1 (DN status)
change the position of the SSI encoder.
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07