Jump to content

Labview Modbus TCP/IP SERVER/SLAVE


Recommended Posts

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Content

    • By BeeEyeBye
      I'm trying to read six input registers from a remote device but the software I put together doesn't seem to do much; no errors but no read-backs either.  I'm a beginner, so the answer is probably simple.  The remote device input registers start at 200 hex.  The device uses TCP and the IP address is correct.  My computer communicates well with the remote device through QmodMaster.  Any help you could give would be appreciated.  Thanks, Mike.
       
       
      Modbus Read 01.pdf So far 01.vi
    • By Makrem Amara
      Hi there,
      I am working on a machine vision project with LabVIEW.
      The camera will locate some parts and send their coordinates via TCP/IP 
      and I created a client also with LabVIEW to display these coordinates here is how the communication going.
      First, if the camera detects something then msg will be sent to the client to inform him.
      then if msg was received correctly client responds with another msg to request the coordinates. 
      at last, the server sends the coordinates to the client. 
      here I faced some problems
      1- the msg sent are with variable length ("x=0,y=0,Rz=0"==> "x=225,y=255,Rz=5" ==> "x=225,y=255,Rz=90"  length vary between 16 and 22 ) with the constant "byte to read " it will not display the full msg.
      2-the client works fine but at a certain time, it shows errors like ("LabVIEW: (Hex 0x80) Open connection limit exceeded";;;;;; "LabVIEW: (Hex 0x42) The network connection was closed by the peer. If you are using the Open VI Reference function on a remote VI Server connection, verify that the machine is allowed access by selecting Tools>>Options>>VI Server on the server side"
       
       





    • By Porter
      View File Plasmionique Modbus Master
      This package contains the Plasmionique Modbus Master library for LabVIEW.
      It supports RTU, ASCII and TCP modes with the following function codes:
      0x01 - Read Coils
      0x02 - Read Discrete Inputs
      0x03 - Read Holding Registers
      0x04 - Read Input Registers
      0x05 - Write Single Coil
      0x06 - Write Single Register
      0x07 - Read Exception Status
      0x0F - Write Multiple Coils
      0x10 - Write Multiple Registers
      0x16 - Mask Write Register
      0x17 - Read/Write Multiple Registers
      0x2B/0x0E - Read Device Identification
      Other features include:
      - Sharing a COM port across multiple Modbus sessions using VISA locks (10 second timeout).
      - Sharing a Modbus session across multiple communication loops.
      - TCP transaction ID handling to ensure that requests and responses are matched up correctly in case responses are received out of order.
      - Modbus Comm Tester, available through the "Tools->Plasmionique" menu, for testing communication with a slave device without writing any code. 
      - Detailed help document available through the "Help->Plasmionique" menu.
      Examples are included in "<LabVIEW>\examples\Plasmionique\MB Master\":
      MB_Master Comm Tester.vi: Demonstrates usage of API to open/close connection and communicate with a Modbus slave device. MB_Master Multiple Sessions.vi: Demonstrates usage of API to open concurrent Modbus sessions. MB_Master Simple Serial.vi: Demonstrates polling of a single input register over serial line. Download a copy of the user guide here: MB_Master - User Guide.pdf
      Note that Version 1.3.4 of this library has been certified compatible with LabVIEW and has been released on the LabVIEW Tools Network: http://sine.ni.com/nips/cds/view/p/lang/en/nid/214230
      The most recent version of this library will always be released on LAVA first before going through NI's certification process.
      ***This project is now available on GitHub: https://github.com/rfporter/Modbus-Master
      Submitter Porter Submitted 04/01/2016 Category LabVIEW Tools Network Certified LabVIEW Version 2012 License Type BSD (Most common)  
    • By Porter
      This package contains the Plasmionique Modbus Master library for LabVIEW.
      It supports RTU, ASCII and TCP modes with the following function codes:
      0x01 - Read Coils
      0x02 - Read Discrete Inputs
      0x03 - Read Holding Registers
      0x04 - Read Input Registers
      0x05 - Write Single Coil
      0x06 - Write Single Register
      0x07 - Read Exception Status
      0x0F - Write Multiple Coils
      0x10 - Write Multiple Registers
      0x16 - Mask Write Register
      0x17 - Read/Write Multiple Registers
      0x2B/0x0E - Read Device Identification
      Other features include:
      - Sharing a COM port across multiple Modbus sessions using VISA locks (10 second timeout).
      - Sharing a Modbus session across multiple communication loops.
      - TCP transaction ID handling to ensure that requests and responses are matched up correctly in case responses are received out of order.
      - Modbus Comm Tester, available through the "Tools->Plasmionique" menu, for testing communication with a slave device without writing any code. 
      - Detailed help document available through the "Help->Plasmionique" menu.
      Examples are included in "<LabVIEW>\examples\Plasmionique\MB Master\":
      MB_Master Comm Tester.vi: Demonstrates usage of API to open/close connection and communicate with a Modbus slave device. MB_Master Multiple Sessions.vi: Demonstrates usage of API to open concurrent Modbus sessions. MB_Master Simple Serial.vi: Demonstrates polling of a single input register over serial line. Download a copy of the user guide here: MB_Master - User Guide.pdf
      Note that Version 1.3.4 of this library has been certified compatible with LabVIEW and has been released on the LabVIEW Tools Network: http://sine.ni.com/nips/cds/view/p/lang/en/nid/214230
      The most recent version of this library will always be released on LAVA first before going through NI's certification process.
      ***This project is now available on GitHub: https://github.com/rfporter/Modbus-Master
    • By Porter
      NI Labs Modbus API is now on GitHub!
      Password protection of VIs has been removed.
      https://github.com/NISystemsEngineering/LabVIEW-Modbus-API
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.