Hi,

      I have an application where I need to control dosing pump that operates by Pulse. One pulse equal to one stroke. Previously I accomplished this Pulse control using CONT_C in S7-400. But, I want to accomplish the same with S7-1200. S7-1200 only have PWM output that is not suitable.

Any suggestions to accomplish pulse PID control? Thanks

 Remember, you can adjust the ON/OFF time of the PWM from the PID parameter. Moreover, you  cannot use relay type output for PWM. If you are using PLC with relay output you will need to get a DO signal board.

Hope this is helpful,

Success. 

automatan

Hi,

      I have an application where I need to control dosing pump that operates by Pulse. One pulse equal to one stroke. Previously I accomplished this Pulse control using CONT_C in S7-400. But, I want to accomplish the same with S7-1200. S7-1200 only have PWM output that is not suitable.

Any suggestions to accomplish pulse PID control? Thanks

Hi,

     I have configured High speed pulse out point built in CPU. But, I want to control pulse count based on pH. Thanks

Thanks Man,

                   I will try and let you know.