suresh_

MrPLC Member
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Files posted by suresh_

  1. my BCD to BIN CONVERTER

    here sinple logic similar to BIN function. Note:no need of error flag here bcs in case of input error, converted output is set to #0000 (on the contrary BIN function activates error flag bcs is  keeping last valid value). 

    2 downloads

    Submitted

  2. my EXPONENTIAL INTEGRATOR (1st ORDER SYSTEM WITH LAG)

    here integrating function from T=0 to T=2.5 with POWER SERIES and error correction. D250 simulates behaviour of first order system with lag.  

    2 downloads

    Submitted

  3. my QUADRATIC SIGNAL INTEGRATOR

    here simple fucntion that calculates TIME integral of a quadratic signal with Coefficient (Real number). Error correction section is provided. Note: Input TIME and COEFFICIENT.   

    1 download

    Submitted

  4. my LINEAR SLOPE/TIME INTEGRATING FUNCTION

    asic integrator provided with error correction section. Inputs are SLOPE * 1000  and TIME *10. No need of PIDAT so it can run on a PC. 
    INTEGRATOR_02.cxp

    1 download

    Submitted

  5. my HELLO WORLD (Lorem Ipsum)

    here Hello World ( Lorem Ipsum) in CX programmer via String Data Type. Nice to have when dealing with HMI.

    1 download

    Updated

  6. my FEEDFORWARD PIDAT CONTROLLER

    in this sample +/- NOISE signal affecting the Steady State is feeded to PIDAT controller to keep the process stable and reactive. Note: PIDAT function is not implemented in CX simulator.

    8 downloads

    Submitted

  7. my 3X3 MATRIX OPERATOR

    simple algoritm for 3x3 matrix multiplication. Tot. Nos. N x N FOR loop will be required to do the math (9 in this case). Refresh every time one input value is changed. Reduction of FOR loops via nesting may be applied.

    3 downloads

    Submitted

  8. my FOR NEXT LOOP

    here a simple example of Array multiplication using a FOR_NEXT loop. It should be stressed that BREAK instruction is fundamental to operate the FOR NEXT loop correctly, on the contrary  N: Number of loops ( #DADA in the sample file) of FOR instruction is not so important ( has to be <> #0 anyway ) . 

    5 downloads

    Submitted

  9. my UNIT STEP RESPONSE

    here simpliest 1st order system response to unit step function. Due to Power series limitations, exponential coefficient * time in sec should be < 2.5 to avoid unaccuracy in the results. 

    3 downloads

    Updated

  10. my POWER SERIES INTEGRATOR

    In this simple example, approximation via power series is used to simulate the response of a 1st order system [H(s) = 1/(s+a)] Note: input of power series should be less than 2.5 to avoid non linearity in the response. 

    2 downloads

    Submitted

  11. my PIDAT CONTROLLER PLUS DEADTIME

    here a control loop capable of simulating a PID controller that is regulating a process with variable DeadTime. To run the simulation it needs the following: 1Nos. PLC ( CP1E is fine) with 2Nos. AI and 1Nos. A0. A signal generator hardwired to AI 90 can be used for simulating Disturbance of the Steady State ( SP 125 Units e.g.) . Note: i)AO 190 is hardwired to AI 91 (MV). ii) the process has no  dynamics except for DeadTime.  

    8 downloads

    Updated

  12. my HYSTERESIS CONTROLLER

    here a simple controller useful for operating an AO with Hysteresis. Proposed range is 50 - 200,  SP 125,  Hysteresis +/-10. Additional Note: an Hysteresis circuit in parallel with a PID controller can be used for tuning complex feedback systems. 

    5 downloads

    Submitted

  13. my Time Integrating Function with PIDAT

    here a very simple program for time integration of an AI using SCL2 and PIDAT capability. Integrand is sent to PIDAT SP, PV is 0. Note: in the example integral from 0 to 60 sec of 100 AI is scaled to 6000. 

    6 downloads

    Updated

  14. my CASCADE PIDAT CONTROLLER

    in this example we have 2Nos. Ai , 1Nos. AO and 2Nos. PIDAT. The PIDAT in the outer loop has Temperature of liquor inside a reactor (SP of 75°C) as PV.The inner PIDAT is controlling the final element of the loop with lower inertia, ie steam Temperature inside the jacket. Finally the steam valve feeding the reactor jacket is controlled by combined action of both the PIDAT. SP of steam is 175°C.  

    4 downloads

    Submitted

  15. my TRAFFIC LIGHT LOGIC WITH TRAFFIC DETECTION

    here a simple application of traffic light logic capable of incrementing Green Light timing according to traffic flow measured in the same direction (North_South and West-East direction). For each veichle detected in the intersection when traffic light signal is Yellow, 1sec increment of Green Light timing will be booked for the next cycle and viceversa for the opposite direction.This should ease traffic flow during peak time. 

    7 downloads

    Submitted

  16. SCL2 + APR

    here a an example taken from Omron manual where a temperature range from -200 to +1300 is linearly shifted to a #0000  #1FFF range. It can be useful when a -/+ temperature signal is sent to PIDAT controller.

    10 downloads

    Submitted

  17. MY PIDAT CONTROLLER SIMULATOR IN CX PROGRAMMER

    this is my PIDAT simulator for CX programmer. D100 is the Steady State (50BCD  in the example), D410 is (simulated)  Process value. It needs a Omron PLC ( kind of CP1E) with n.01 AI, n.01 AO ( AO needs to be wired to AI to run the simulator). When starting set D410 (0:100) and start PIDAT to see the regulator at work.   Keep AT OFF to see tracking process. 

    10 downloads

    Updated

  18. my DEAD BAND CONTROLLER ON/OFF

    in this simple example, very similar to the previous one, 190 AO is controlling the actuator at 0% 50% and 100% of is operating range and  91 AI is providing PV for the error comparator. This control could be beneficial where keeping exactely the SV is not mandatory plus the actuator  is operating poorly in the proportional band.

    5 downloads

    Submitted

  19. MY AO DEAD BAND CONTROLLER IN CX PROGRAMMER

    here my simple dead band controller for Omron CP PLC with Analog IO capability, other than that  you may have a precise Voltage/Current reference + multimeter, however the controller can work in simulation mode too because only basic functions have been implemented. Proposed values are: Range 50-200, SP 125, dead band +/- 20.

    6 downloads

    Updated