Siemens SIMATIC ET 200S Operating Instructions Manual page 122

1Count5V/500kHz
3.3 Example: Start 1Count5V/500kHz
Testing
Use "Monitor/Modify Variables" to monitor the count value and the gate.
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. Use your encoder to generate pulses.
Result
You can now see that:
• The UP LED on the 1Count5V/500kHz is on. The status of the UP LED changes with
• The count value in the block changes.
122
menu command to insert the VAT 1 variable table, and then confirm with OK.
DB1.DBD8 (current count value)
DB1.DBx13.0 (internal gate status)
The "internal gate status" bit must be set.
each new pulse.
Technological Functions
Operating Instructions, 02/2007, A5E00124867-05