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  1. GX Work2 Comments in Arrays

    I am very new to the Mitsubishi PLC world (I have a lot of experience with A/B and Omron though).  I am having an issue trying to assign comments to an array of Globally scoped bits - I am also using Structured Ladder - NOT simple ladder.  Is it possible to do this?  I have contacted there tech support group and they were of little help.  I don't care if I update the label comment or the device comment, I just want to assign a simple comment that can be displayed (i.e. I am using this for step sequences).   Any help would be greatly appreciated!  
  2. ladder program

    Hello everyone, I want to know why the Y172 coil is ON / logic 1? whereas contact SM1 is worth OFF / logic 0? can anyone explain it to me ?
  3. Hi everybody! I am an experienced electrical/electronics technician with 6 years of maintenance experience, and my boss at the factory recently suggested that I should start learning PLCs so I can take over the automation maintenance all by my own team. I have a lot of time to prepare for this position. What is the optimal way to start? We are working with OMRON equipment. I found some courses that look interesting, so my training plan is: 1 finish the free courses - the ones from Omron Learning website - the one from LinkedIn learning "Learning PLC Ladder Logic Course by: Zahraa Khalil" 2 finish the payed courses on UDEMY - Learn 5 PLCs in a Day-AB, Siemens, Schneider, Omron & Delta - PLC Programming From Scratch (PLC I) -  Practical PLC Programming (PLC II) -  Process Visualization with HMI / SCADA (PLC III) -  Advanced Programming Paradigms (PLC IV) - From Wire to PLC , A Bootcamp In Industrial Automation -  Factory Automation using PLC Logics   That being said, can you suggest me more courses / textbooks / training programs? BTW your forum has been a good source of information for the last few days that I have took to research the topic, so I want to thank you all for providing all of this information. God bless you all!    
  4. Bits on Contactor

    I use ladder logic in its most simple form. In ladder logic on the left, I have contacts(ANDs and ORs configuration). They are either switches, logic results of functions or switches, or canned strobing On the right, I have all types of functions, timers, keeps, counters, etc. As a simple example, I have a canned 1 second strobe feeding a counter. I can use the counter as a contact to close when it reaches zero. Does all of the" business" have to happen on the right? For example, the left side of the IF/(contact) statement can I put something like a bit comparison on the left? Something like... Counter, Bit# Or do I have to use a bit comparison on the right and its binary result as a contact and put it on the left?     Thanks    
  5. Hi. This regards ventilation. A room has two air inlet dampers (pretty much like a big air valve in a ventilation duct). Only one is used at a time to regulate temperature in the room, and the other is then closed. When switching the inlet of air from one damper to another; i have not decided what method to use yet. I consider splitting the regulator output in two and let the one damper ramp down to this value, and the other ramp up.  When these values are reached one ramps up to the full regulator output and the other to zero. Not quite sure this is the best solution, and the code is not written yet :) Anyone done anything similar or has suggestions? Cheers!
  6. Hello:   I need to link  a lot of variables, pointing to CIO address, like "AT" field, but is a large volume of tags to create, so, I have a chance to assign a memory location to a variable in ST like:  my_tag := %100;  (trying to assign tag address to CIO 100) ? If not, there is a method to import tags from a Excel ?   Thanks.    
  7. How to watch the value in decimal directly in the ladder page ?  Default Hexadecimal The only way I can do it is in Watch Tab and I/O map per example Thank you
  8. I am new to PlC programming . Plz can anyone guide me for ladder programming for FX5U -4LC Temperature controller with autotune parameters . Plus i want to use a PT-100 for the same . Plz help me out.
  9. Hi..  someone please help me.. i'm working in omron CS1H-H CPU67 PLC. My struggle is I/O in one particular rung is not getting updated.  Note: the rung is consist of a P_On flag followed by a FB ; all I/O to the FB were correctly assigned. but the inputs inside the FB instance are not getting updated so that the output not updated. can anyone please help me....????   sorry for my poor english... thanks in advance.
  10. Hello everyone! Is there possibility to read words e.g. Name of alarm from the csv file or another file and save it in the PLC memory for further processing? It would be the best if the solution will matches to FX5 and IQ-R/F but it can be also for any of them. Thanks for help :)
  11. Gx Works 2 ve fx2n için bir fonksiyon kütüphanesine ihtiyacım var. Servo ve step motor kontrolü için.   thank you
  12. Hi, I am searching for a  Possibility to Set bits in Set or Reset State. How can i do that? in Example the Code in LD: and in ST EQ_E( Merker79 AND Referenzfahrt_TP_Ein_Aus = TRUE , bDummy , P_Achse_Istpos_pulse , 0 ); PLS( bDummy , Drehrichtung_P_Achse AND M8140 AND Loeschen_Positionszaehler_Achsen AND Startpos_anfahren_nach_Referenzi AND P_Achse_Referenziert = TRUE );
  13. Hi, I Have some Problems with this Function Block written in Codesys ST: Variables: FUNCTION_BLOCK FB_Powder_Test VAR_INPUT     bEnable: BOOL;     bPowder_On_Button: BOOL;     bPowder_Test_OnOff: BOOL;     iTime_Powdertest: INT; END_VAR VAR_OUTPUT     bReset: BOOL;     iActual_time_powdertest: INT; END_VAR VAR     PowderTest_Ton: TON; END_VAR Function Block: IF NOT bEnable THEN     bReset := TRUE;     PowderTest_Ton.IN := FALSE;     iActual_time_powdertest := 0; ELSE     IF bPowder_On_Button THEN         PowderTest_Ton(IN := bPowder_Test_OnOff, PT := (INT_TO_TIME(iTime_Powdertest) * 1000));         iActual_time_powdertest := REAL_TO_INT((TIME_TO_REAL(PowderTest_Ton.PT) - TIME_TO_REAL( PowderTest_Ton.ET)) / 1000);         bReset :=  PowderTest_Ton.Q;     END_IF END_IF and GX Works3  Variables: bEnable                                  Bit                        VAR_INPUT bPowder_On_Button            Bit                        VAR_INPUT bPowder_Test_OnOff          Bit                         VAR_INPUT iTime_Powdertest                Word [Signed]    VAR_INPUT bReset                                    Bit                        VAR_OUTPUT iActual_time_powdertest    Word [Signed]    VAR_OUTPUT PowderTest_Ton                  TON                     VAR   Function Block: IF NOT bEnable THEN     bReset := TRUE;     PowderTest_Ton.IN := FALSE;     iActual_time_powdertest := 0; ELSE     IF bPowder_On_Button THEN         PowderTest_Ton(IN := bPowder_Test_OnOff, PT := (INT_TO_REAL(iTime_Powdertest) * 1000));         iActual_time_powdertest := ((TIME_TO_INT(PowderTest_Ton.PT) - TIME_TO_INT( PowderTest_Ton.ET)) / 1000);         bReset :=  PowderTest_Ton.Q;     END_IF; END_IF; I have this Error: No.    Result    Data Name    Category    Content    Error Code 1    Warning    FB_Powder_Test    Syntax Check    Convert data type from INT type to REAL type automatically.    0x11042FD4 2    Error    FB_Powder_Test    Syntax Check    Data type of argument does not match.    0x11041F61    
  14. Hi, Many Programms we have are written in Codesys and in ST Language  and now we have a FX5U and I'm trying to Convert some of them. But the both Systems are different, I miss the Librarys like util.lib and FB like RAMP_REAL, BLINK, LIMITERROR which are in Util.lib. Are there Librarys like util.lib for GX Works 3 ? Is it possible to convert Ladder to ST? (I dont have any Idea from Ladder and I'm new in Programming)  Have someone Sample Programms for me for Training?
  15. Hi,     I'm trying to communicate Omron CP1E unit with PC via serial port using hostlink protocol.  I need to read the Timer/Counter SV value and write the timer/counter SV values to the PLC.  I'm able to use other C mode commands (like RC (timer/counter PV read), WC (timer/counter PV write) etc.) but when I give the command for Timer/Counter SV Read 1 which is R#, I get the response as IC (Undefined Command).   How do I write or read the timer SV Values?  Example command and response : @00R#TIMH001028*  (TIMH is the high speed timer, 0010 is the timer number and 28 is the FCS) Response: @00IC4A* Is is that CP1E doesn't support these commands? If so what is the equivalent command that I should send inorder to perform this? Please help.  
  16. Logix 5000, Array filling

    Hi there! I have a question with AB PLC. My problem:  I have some raw data...distance for example.When the machine starts,the sensor begins to send the information with the distance values. When data is received it is moved into an array. After the first 5 values the program calculates an average and the result is moved into another array.Currently after receiving the fifth value,thus filling the first array,making the calculation and sending the average to the other array,the program empties the entire first array instead of just always discarding the oldest value of the five,and recalculating the average with the newly arrived value every time. I tried to made this with ladder diagram using an an fifo load and unload but isnt working. Please help me if anybody can. Thank You.
  17. Ladder Display Format Change

    My program has the option Tool | Options | Program Editor | Ladder | Ladder Diagram Display Format set to 11 Contacts.  Are there any repercussions to changing this on an existing program?  I would like to spread it out to the 17 Contact setting.
  18. FX2N & Inverter iG5A on RS485

    Hello everyone, I'm a beginner in RS485 communications and i want to control 2 inverter LS iG5A via RS485 from a PLC Mitsubishi FX2N I really don't understand how i should aproach and start this part of program in Ladder Diagram, to write and read parameters from Inverters.  Please help me with an example    Thanks.
  19. I am using GX Works Version 1.493P After selecting Online->Monitor -> Monitor Mode ... and doing some online debugging... I find my projects stuck in read-only mode. Even restarting the computer does not make the project editable again. Any help will be greatly appreciated.
  20. KEEP in ST

    Hi, I have a fairly easy assignment for a school project that has the following components:  -1 impuls start switch  -1 impuls stop switch  -2 El-motors When you push start one motor is suppose to run. Then you push stop and it stops. The next time you start the other should run. Only one motor shoud run at the time.  I solved this using a KEEP function in ladder logic. But I want to be abel to do the same thing in structured text. So my problem is that I cant fint anything to replace the KEEP function. Any help would be much appriciated.  
  21. Structured Ladder

    Need Help! I uploaded structured ladder program into FX3S PLC. But When I try to read it from PLC it says the program cannot be opened. 
  22. RSLogix500 Ladder Problem

    Ok, so I have 22 bits that I need to monitor the status of; all in separate words. Each change of state (on each bit) I need to trigger a timer and have the timer done to completion. I'd like to have the timer reset if a bit changes state during timing. I'd like to keep it to one timer. I'd like to keep things as simple as possible so the less rungs / branches the better. Any help?
  23. Hi Everyone, I'm working on my first PLC program and I have gotten my hands on some ladder logic I'm trying to duplicate. I'm using SoMachine 4.1 and have started a new Ladder Logic diagram POU. I'm curious on how do I create internal contacts. EXAMPLE: 24v--------l START BUTTON l----------------( COIL A)----- --------------l COIL A CONTACT 1; attached to a real output, solenoid valvel-------------l COIL A INTERNAL CONTACT TO CLOSE l---------------- Are there standards for numbering and labeling? I'm seeing L and U inside coil contacts. Does this have an underlying meaning according to standard? Is there a RTO function inside SoMachine 4.1    
  24. Hi everyone, I'm a newbie in the ladder logic programming languages. For my thesis project I've to develop a scenario but I'm stuck with the creation of a socket connection from the Modicon M340 PLC to a server for transfer continuous data given from sensors or similar. Does anyone have a sample program that could have such a functionality so that I can change it based on my needs? Thanks in advice for any further reply!
  25. Problem failed to start ladder engine

    Hello my brother and sister at this forum, please help me, my problem is after i make ladder diagram and iam click button simulation -> Work online simulator ( CTRL + SHIFT + W ) then appear warning  "failed to start ladder engine", what a problem?? thanks before