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  1. #1
    Join Date
    Feb 2007
    Posts
    34

    SIEMENS "adapt" statement (PPCL)

    I'm quite familiar with how to write a LOOP statement but have had very little exposure to the newer "ADAPT" statement. Does anyone have anything in writing, perhaps a section out of a training manual that can display to me exactly how this command line works and how to write it? Has a new section been added to the PPCL manual to include this statement? If so, can someone e-mail me the section?

    Also, how does this statement differ from a LOOP statement?

    Thanks in advance.

  2. #2
    Join Date
    Mar 2008
    Location
    Indy
    Posts
    345
    Self tuning PID loop.

    Example of ADAPTS
    2000 C ADAPTS CONTROL LOOP STATISTICS (LOGICAL

    2002 C FIRMWARE) STATIC PRESSURE CONTROL

    2004 C DIRECT CONTROL LOOP

    2006 C INPUT = %X%SSP

    2008 C Output = %X%LP1

    2010 C SETPOINT = %X%SSS

    2012 C SAMPLE TIME = 1 SECOND

    2014 C GAIN = %X%KC

    2016 C TIME CONSTANT = %X%TC

    2018 C REVERSE ACTING FLAG = 1

    2020 C LOW LIMIT OF INPUT = -0.1

    2022 C HIGH LIMIT OF INPUT = 5.0

    2024 C LOW LIMIT OF OUTPUT = 0.0

    2026 C HIGH LIMIT OF OUTPUT = 100.0

    2028 C ERROR DEADBAND = %X%DB1

    2030 C NOISY PROCESS VARIABLE = %X%NP1

    2034 C ERROR REPORT POINT = %X%ERR

    2036 IF (%X%RP1.LT.%X%LP1) THEN GOTO 2042

    2038 ADAPTS (%X%SSP, %X%LP1, %X%SSS, 1, %X%KC, %X%TC, 1, -0.1, 5.0, 0.0, 100.0, %X%DB1, %X%NP1, %X%ERR)

    2040 C SUPPLY FAN RAMP

    2042 TABLE ($SPFRMP %X%RP1, 0, 0, 180, 100)

    2044 C SUPPLY FAN VFD SIGNAL

    2046 MIN (%X%SVO, %X%LP1, %X%LP1)

    2048 ...

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