adamlhadi

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About adamlhadi

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    Hi, I am New!

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  • Country Algeria

  1. rs232 communication with (s7-1200 plc)

    adamlhadi posted a topic in Siemens

    Hi everyone i have a vfd with db9 (RS232)as it's manual said ,so in order to make a communication with this VFD and (1200plc) i need CM1241(RS232) module or a signal board(RS232)  but is't possible to use CM1241 (RS485) instead of CM1241(RS232) technically  what's the difference between CM an SB in this case kind regards

  2. reverse PID action

    adamlhadi posted a topic in Siemens

    Hi everyone   currently am working on (PID level control) on factory I/O   am using 2* PIDs for filling and discharging.in the filling process everything works great even whene activating MAN (manual mode)   with the discharge process i have set the following parameters as follows (picture) ,this allows to invert the PID action   but whene i set the MAN value to 90% the LMN=10 if MAN=80% the=20  it's like he is Completing to 100% how to solve it   kind regards