Search the Community

Showing results for tags 'now a software solution is available for your modbus (mb) needs in rockwell/allen-bradley control logix or compact logix (clgx) family processors instead of a traditional 3rd party hardware like prosoft mvi-56'.

  • Search By Tags

    Type tags separated by commas.

  • Search By Author

Content Type

Find results in...

Find results that...


Date Created

Last Updated

Filter by number of...

Found 734 results

  1. I am in the middle of doing a retrofit for a old PLC5 and i decided to upgrade it to a Control Logix. With how much I/O I was needing the price of the system was going to be very pricey. So I decided to use my main rack as a control logix and use Flex I/O for my remote racks. I have never put together a Flex I/O rack so I am unsure of what I need for this rack other than my I/O modules and a communication module. Could someone give me a list of what is needed for these systems? 
  2. Please assist me with the following; regarding the ME96SSHA-MB Power meter data transition with Melsec-Q series PLC; We acquire to read various values on dedicated Modbus storage address registers at the simultaneous into a Melsec-Q series PLC via Modbus (TCP or RTU)  for calculation purposes. Naturally, since the reading of these variables are to provide accurate instantaneous results, it is a requirement that these values are to be read at one scan.   However, as can be seen below, there is a gap in address register range – of which, if all of these are scanned simultaneously, yields an exception error when read. This error is only avoided by scanning these data sets separately – which is not ideal for our application – since accuracy in calculations is imperative.
  3. Please assist me with the following; regarding the ME96SSHA-MB Power meter data transition with Melsec-Q series PLC; We acquire to read various values on dedicated Modbus storage address registers at the simultaneous into a Melsec-Q series PLC via Modbus (TCP or RTU)  for calculation purposes. Naturally, since the reading of these variables are to provide accurate instantaneous results, it is a requirement that these values are to be read at one scan.   However, as can be seen below, there is a gap in address register range – of which, if all of these are scanned simultaneously, yields an exception error when read. This error is only avoided by scanning these data sets separately – which is not ideal for our application – since accuracy in calculations is imperative.
  4. Hi Guys! I have a problem with data collection. I use RS Logix 5000 software. I need to collect 11 int value. The sampling frequency is about 2 or 3 second. I tried to make an array but I faild, because I dont find what is correct for my task. I need about 5000 sample each of int value. Anybody have any idea about this problem ? If I have the datas then I have to exporting to an excel table . Thank you if anyone can help me.   T
  5. Is it possible to add another AB Rockwell PLC to the network tree as a Generic Ethernet Module and use it as IO? Any idea where I would find information regarding assembly instance and size of I/O/C for AB Rockwell products? If possible, what are the pros and cons when compared to produce/consume and MSG instructions? Don't need to use it real world, just curious. Many thanks in advance.
  6. I have G310 and need to communicate with a AB PowerFlex 753 via Ethernet (20-COMM-E). I have tinkered with the Allen-Bradley drivers, which appear to be a MSG function, with no success. Has anyone done this?
  7. i am using a VSD Altivar71 and controlling it through serial MODBUS communication, the probllem is sometimes after stoping the motor the drives gives the "nst" fault which means according to the programming catalouge "freewheel stop" it doesn't do that all the time but it happens a lot and after uploading the code again to plc the problem is gone for a while before it happens again. i am sure that the fault is happening because if communication because when i controll the drive from hmi it never gives that fault, i checked the setting and tried different cables but it still gives "nst" and motor never moves, i found that in catalouge but i am not sure how to address the problem.
  8. I have multiple PVP 1500's on the same network. From the one in my control room i need to be able to see what user is logged into what HMI. How would I address the system tag of another HMI on the same network would I use the IP address? thank you for any help in advance

  9. Clearing an Array in RSLogix

    Dbanks posted a topic in Other PLCs

    I'm having a tough time clearing the entirety of an array. I've tried using the copy function, the clear, the fill and the the file synchronous copy functions. I'm solely trying to copy 0's into the entirety of a 20 tag array. Example Tag[0] to tag[20]. I saw another thread here: http://forums.mrplc.com/index.php?/topic/14678-clearing-an-array-in-rslogix-5000/  However, that didn't help me. Anyone have any shortcuts here?  Thanks so much in advance!
  10. Hi ! I have to Control and Read an Masss Flow Controller (MFC) MKS MF-1, I have give this one an IP Adress (10.46.103.75). How can I Control it over Modbus TCP? I found in GX Works 3 in Tool/Predifined Protocol Support function the Modbus Menue, but i have no Idea how to Config it, i have no Idea how Modbus works..... Have someone an Example for a Configuration? 
  11. My apologies for being a newbie on this, but could someone save me on this... I have a Viper 650 and an eMB-60R controller which I want to control by ePLC connection using an NJ501-1300 PLC unit, SYSMAC Studio with EIP Adept Library for Robot... All are starting up well, and I connect all components to a switch hub...  But following the ePLC guidelines, the IP Address showing on the controller is 172.16.132.111 I change the IPV4 IP Address on the PC settings to 172.16.132.10 and the subnet to 255.255.0.0 but the Adept IP Address Setting Tool on SYSMAC doesn't detect the Robot IP Address, also i tried ipconfig on command prompt which shows a different IP Address IPV4 169.254.197.75 and subnet of 255.255.0.0, I changed the previous setting on the PC setting to 169.254.197.10 with the same subnet. But still PC doesn't recognize. I tried both configurations if ACE Software can detect it but the same ACE can not detect it also... Appreciate any thoughts on what's wrong in my configurations. Thank you.

  12. wearables

    sczot posted a topic in Mitsubishi

    Hello,   does anyone of you have some experience with integration of wearables? (something like this) Our biggest problem right now is data transmision from 2D scanner to PLC our expected diagram is   2d scanner >cable> mobile computer > wifi > GT25 (hmi with got mobile function) > iQR PLC   right now it looks like we will need some android app running on mobile computer to transfer data from scanner to web page generated by HMI's GOT mobile function Do you know some better way? I was looking through manuals and I wasn't able to find some direct way of connecting remote 2D scanner with HMI.     Thank you

  13. Fuji Wsz plc

    Gscont posted a topic in Other PLCs

    Please send Fuji Wsz plc software download link  

  14. Fuji Wsz plc

    Gscont posted a topic in Other PLCs

    Please send Plc software link

  15. Stripped down HMI Software

    Beau posted a topic in HMI & SCADA

    Currently, our SCADA setup uses Kepware, Wonderware, and Canary Labs data logger and historian. The data flow is as follows:  PLCs --> Kepware (on PC near process) Kepware --> Canary Data Logger (on PC near process) Canary Data Logger --> Canary Historian (on Server) Canary Historian --> Canary Axiom Viewer Client (on engineer's PC) We use Wonderware as an HMI on the Process PC to control the process. As many will know, this is very wasteful as Wonderware includes many other features and we are paying for all of them yet using only the HMI feature. Our goal is to cut Wonderware out of the equation (i am aware that Wonderware  could replace both Canary and Kepware with its data logger and OPC server features but this is the direction that was chosen so we are going with it).  My question is: Does anyone know of any simple and cheap (-er than Wonderware) PC-based HMI software that could replace Wonderware on the Process PC?
  16. Please find listed below the NModbus4 console code.  The DataStoreWrittenTo event is not firing when I do the write to PLC C0 relay coil.  Can anyone tell me how to get the event to fire?  using Modbus.Data; using Modbus.Device; using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Net.Sockets; using System.Text; using System.Threading; using System.Threading.Tasks; namespace NModbus4ListenerDemo { class Program { #region "Properties" static TcpClient tcpClient = new TcpClient(); static ModbusIpMaster PLCModbusMaster = ModbusIpMaster.CreateIp(tcpClient); static string C0_RelayCoil_Address = "3073"; static ushort C0_RelayCoil_BitAddress = Convert.ToUInt16(Convert.ToInt16(C0_RelayCoil_Address) - 1); #endregion #region "Setup Listener" static IPAddress MiddlewareSlaveIPAddress = IPAddress.Parse("10.95.11.34"); static TcpListener MiddlewareSlaveTcpListener = new TcpListener(MiddlewareSlaveIPAddress, Convert.ToInt32("502")); static ModbusSlave middlewareslave = ModbusTcpSlave.CreateTcp(Convert.ToByte("255"), MiddlewareSlaveTcpListener); #endregion static void Main(string[] args) { string PLCMasterIPAddress = "10.95.11.32"; tcpClient.BeginConnect(PLCMasterIPAddress, 502, null, null); Thread.Sleep(100); #region "Set Relay Coit C0 to false" PLCModbusMaster.WriteSingleCoil(C0_RelayCoil_BitAddress, false); Thread.Sleep(50); bool[] C0_RelayCoil_BitValue = PLCModbusMaster.ReadCoils(C0_RelayCoil_BitAddress, 1); string C0RelayCoilBitValue = C0_RelayCoil_BitValue[0] ? "True" : "False"; Console.WriteLine("C0 Relay Coil = " + C0RelayCoilBitValue); Thread.Sleep(50); #endregion #region "Create DataStore and start listing" MiddlewareSlaveTcpListener.Start(); middlewareslave.DataStore = DataStoreFactory.CreateDefaultDataStore(); middlewareslave.DataStore.DataStoreWrittenTo += ModbusDataStore_DataStoreWrittenTo; middlewareslave.Listen(); Thread.Sleep(50); #endregion #region "Set Relay Coit C0 to false" PLCModbusMaster.WriteSingleCoil(C0_RelayCoil_BitAddress, true); Thread.Sleep(50); C0_RelayCoil_BitValue = PLCModbusMaster.ReadCoils(C0_RelayCoil_BitAddress, 1); C0RelayCoilBitValue = C0_RelayCoil_BitValue[0] ? "True" : "False"; Console.WriteLine("C0 Relay Coil = " + C0RelayCoilBitValue); Thread.Sleep(50); #endregion Console.ReadLine(); #region "ModbusDataStore_DataStoreWrittenTo" void ModbusDataStore_DataStoreWrittenTo(object sender, DataStoreEventArgs e) { Console.WriteLine("ModbusDataStore_DataStoreWrittenTo event fired!"); } #endregion } } } I've attached ladder logic screen shots showing the C0 relay coil being set on by the console application. The console application displaying the messages.  Note the absence of the "ModbusDataStore_DataStoreWrittenTo event fired!" message. WireShark showing the TCP Modbus traffic between the modbus master and slave over port 502.   The PLC NetEdit3 Modbus information Paul  
  17. I am using NB Designer for last one year without problems. But from last week i am getting new error Background PLC control recorder 0 error! while compiling and not able to update the HMI. Please help.
  18. Hello guys, I have a system of 3 load cells (SP4M-7Kg) attached  to a Micrologix 1500 analog inputs. in the same PLC i have 3 coils for a vibrator, each vibrator is working with signal generators. and the load cells with an external 24vdc Power Supply. i see my load cells readings fluctuating too much even with the vibrator not working. if it is set lets say 70 Grams it is jumping from 68.4 to 74.8 going up an down never never stabilizes in one number, so i suspect am getting noise somewhere put a 100uF capacitor PLC inputs for the load cells but weight just increases more and more. How can realize where is the noise comming? what can i use as a filter? how can i improve this system? should i changed it to digital?   any help welcome! thanks.  questions?    
  19. Hey Guys, I'm somewhat new to Data logging so try to bare with me. I'm trying to setup Data logging in Factorytalk View SE to log to my SQL database. I have created the 32-bit ODBC system DSN. Created the datalog model in FT View Studio and selected ODBC and it created my tables fine (Float, String, Tag). I chose Login required. I also setup a File backup path. With that being said, when I use the command DatalogOn- It will start the Datalog model without any errors, but will only log to the backup path. It isn't logging anything to my SQL DB. I thought it could be the firewall blocking it so I created a rule to allow connections through the specified port. SQL is also allowing Reading/Writing.  Let me know if you guys have any suggestions. Thanks!
  20. Does anyone have experience with a Jiskoot Insight controller? Im trying to establish communications between it and a MVI69-MCM. I have checked and rechecked all my settings. I am not sure what I am doing wrong. Thanks
  21. Hi everyone, I just want to layout the structure of the question. I have a GOT2000 (GT27* series) that I have hooked up and communicating with an Allen-Bradley PLC. I have established connection and can pull out certain tags values from the PLC program in RSLogix 5000. While I can read the tag values, I cannot modify them (in certain conditions).  So let say that I have a User-Defined Structure named "Smoke_Detector" and here are it's available members: Smoke_Detector:   - ALARM (BOOL)   - ON_TIME (DINT) * DINT in Allen-Bradley but Signed Binary 32   - Battery_Life (REAL)  My question is that while I can read and display the tag and its members through the following:   - LAMP for Smoke_Detector.ALARM   - Numerical Display for both Smoke_Detector.ON_TIME and Smoke_Detector.Battery_Life But when I tried to modify the values via a Bit Switch or Numerical Input, it does not operate on them.  However, if these tags are members are just standalone tags, meaning that they are not within a UDT in RSLogix 5000, then I can operate/ modify them just fine.  Here are the things that I have tried: * Making sure that the permission are set to Read/ Write in RSLogix 5000 * Making sure that the tag definition in GT Designer 3 follows the structure where @[channel]:[Network #]:[Station #]::[Tag instance and member (e.g Smoke_detector is the instance and Alarm is member] Any possible insight and input are appreciate! 
  22. I am starting my own consulting business, so put my experience and technical know-how to work and ensure the success of your process control projects.  No project is too small!  I hold a Bachelor’s of Science in Electrical Engineering from The University of Arkansas, and obtained an Arkansas PE license in 2014.  After working for a Generation and Transmission company as a power plant controls engineer, I have decided to put my skills and experience to work as an independent consultant.  My SCADA/HMI experience includes GE’s Proficy Cimplicity software, and Rockwell Automation FactoryTalk View SE.  I also have experience programming controllers using GE’s Proficy Machine Edition, Rockwell Automation Studio 5000 and RS Logix, and Emerson Delta V. Check out my LinkedIn profile at https://www.linkedin.com/in/trevormarmstrong for more details regarding my experience and past projects. Contact me through these forums, LinkedIn, or via email at tmarmst@gmail.com any time for more information on my services or availability.
  23. Hello, I am quite a newbie in PLC programming. I am trying to add a PID control function into a ladder program of FX3U PLC that was made by the person before me who used GX developer. I have read the manual, but still not sure if I understand it correctly or not. Please help me with questions below: 1. For parameters [S3]+1, how do I set the bit value? My understanding is that I need to align the bits I want, and then convert to Decimal number to set it, is this correct? i.e. If I need bit to be 0100001, do I set the parameter to 33? 2. How do I know if I am doing backward or forward operation? I think what I am doing is feedback control loop, does this mean it is a backward operation? 3. If I set auto tuning bit (parameter [S3]+1 bit#4) to 1, will this make the the program to run auto tune everytime I start the PID? 4. For parameter [S3]+22, [S3]+23 and [S3]+24, the manual said it will be occupied. Does this mean it will be preset by the program which I shouldn't mess with them? But how do I set the output upper and lower limit in [S3]+22 and [S3]+23? Also, I couldn't find any example of PID parameter setting in the manual. Not sure if I missed any important section in the manual. So please point out to me if there is any example. I also attached the manual on the PID page just for a quick reference. Thank you in advance for the help. FX3U Programming PID.pdf
  24. Hello, I want control ATV320 inverter through MODBUS protocol. I found, that ATV312 inverter have IEC 61800-7 status chart. I attached picture. I want to ask, maybe ATV320 inverter have same IEC 61800-7 status chart and where need find it. Yesterday I try to find all evening, but don't successful. Somebody could help to me.
  25. Hello :I'm the creator of an Android HMI app,  I recently added Ethernet/IP connectivity with MicroLogix and SLC AB PLCs, but I have only been able to test it with a MicroLogix 1100.I'm really not sure if it works with SLC or with other MicroLogix models.If someone could try it, I would appreciate it. To access the test, from the Android device, open this https://play.google.com/apps/testing/com.suppanel.suppanel on the web browser and install the Beta version.On the application you have to open the "EIP MicroLogic SLC Test" panel that contains some instructions. Thank you very much !