Siemens SIMATIC ET 200S Operating Instructions Manual page 325

Pulse Output Mode
Use channel 0 of the 2PULSE in pulse output mode for the filling process. In this mode, the
2PULSE generates a pulse at the DO digital output (24 V control signal) for the specifiable
pulse duration to control the valve.
Procedure
1. Start of the filling process: To start the process, use the software enable (SW_ENABLE)
2. Monitoring the filling process: The error detection/diagnostic function allows you to check
3. End of the filling process: You can find out when the process has finished in the program
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
on your control program. The 2PULSE uses the 24 V enable signal (DI digital input) to
check whether the container is correctly positioned. Then open the valve using the control
program (SW_ENABLE 0→1) and start the filling process.
in the program that the process is running correctly.
by evaluating STS_ENABLE.
Figure 5-21 Flow Diagram for the Filling Process
2PULSE
5.7 Application Examples
325