Jump to content

Search the Community

Showing results for tags 'modbus rtu'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • Our Community
    • Come on in!
  • News and Announcements
    • Latest Release! UniLogic Spring 2020--Loadcell, BACnet IP Server and more!
    • VisiLogic:9.8.64 - Link to mobile app, Ladder: 2x the Space!
    • New!!! ***** U90 Ladder*****
  • UniStream HMI + PLC Programmable Controllers & UniLogic Software
    • UniStream: Hardware
    • UniLogic Software
    • UniLogic UDFBs
    • Industry 4.0, IioT, MQTT, OPC UA
  • Vision, Samba, Jazz and M90 PLC + HMIs & Software
    • Vision & Samba PLC + HMI Controllers & VisiLogic Software
    • Jazz, M91 PLCs and U90Ladder
  • Software Utilities
    • SD Card Suite
    • Remote Operator
    • Remote Access
    • DataXport and DataXls
    • UniDownloader
    • UniOPC
    • UniDDE
  • Utilities for .net and Visual Studio
    • Unitronics PCOM Protocol
    • COM Object ActiveX .dll
    • .NET driver
  • Project Design
    • ...I have a project...what hardware do I need?
  • User Application Stories
    • Just finished a great project?
  • Tips and Tricks
    • Best Programming Practices
    • Tips and Tricks
  • Job Board
    • Projects seeking Programmers
    • Programmers seeking Projects
  • General Discussion
    • We're Listening...
    • The Lounge
  • News and Announcements Copy

Blogs

  • Unitronics' Blog: PLCs, HMIs and more
  • Saragani's Blog
  • Simon's Blog
  • Ash Neilson's Blog
  • Joe Tauser's Blog
  • Unitronics en Español
  • Powered by AMPS
  • Alldrives UK's Blog
  • Unitronics, Howman Style
  • PLCNewbie's Blog
  • Telestar Automation Blog
  • Webinars Collection
  • Tim's Corner
  • Blog
  • TELESTAR (Italian)
  • i4 Automation
  • i4 Automation (UK)
  • Unistream UDFB's

Categories

  • From Headquarters: Sample Applications
    • From Headquarters: VisiLogic
    • From Unitronics: U90 Ladder applications
  • User-submitted Applications
    • From Users: VisiLogic applications
    • From Users: U90 Applications

Categories

  • Articles
    • Forum Integration
    • Frontpage
  • Pages
  • Miscellaneous
    • Databases
    • Templates
    • Media

Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


AIM


MSN


Website URL


ICQ


Yahoo


Jabber


Skype


Location


Interests

Found 12 results

  1. Hi, For personal use I'm using a V280-18-B20B with a V200-18-E1B. snap-in module. In order to register temperatures, I'm going to use a (third party) Pt100 I/O-module which communicates via MODBUS RTU. According to the documentation I would have to configure comm. port 2 of the V280, through jumper settings, for RS485 communication. And, again according the documentation, these jumpers must be present on the circuit board directly behind comm. port 1 and port 2. But unfortunately in my case there are no jumpers on my V280 to set comm. port 2 to RS485. Several questions popping up
  2. Hi. We installed 3 x V570 plc's running on ethernet network. Also connected Indusoft scada system to system. Delta vsd run also on same network. All working fine and then sometimes comms to scada stops. Also comms to VSD's not constant. If comms to scada laptop fails we have to restart plc's to get comms again. Any suggestions or help will be appreciated
  3. Hello friends. I am using a USC B5 TA30. This PLC is communicating with 4 frequency inverters in RS485. I managed to establish communication but it is very unstable, the problems are as follows: -It does not update in real time, it takes a few seconds because I need to be updating the routine call manually; -All the inverters are configured correctly and work individually just by changing the cable between them, but when I connect them all there is no command of two or more (each with their own address); Some data that may be relevant: -All equipment is functional; -They are
  4. Hello, I have a school project where i was tasked to read an MI from a Slave PLC as a Master PLC. I've tried using the help fuction, but i havent seemed to make it work. Thanks in advance
  5. Hello my friends, I have some difficulties communicating with a power meter, it has a Floating Point 32 address, and I can't communicate. I performed tests on KepServer and got success and also with ModbusScan. You could be helping me set up the program or teach me some procedure you might be doing to establish communication. Attached is the list of registers.
  6. Hi there, this is my first time working with unitronix plc and I have some problems with understeanding how does modbus communication works. I am using visilogic 1210 plc and I want to read some parameters from Iskra FPC400. I want to use modbus because FPC400 only supports rs485 communication. First I did set up com port and configured modbus. (As you can see from pictures that I included) I want to read 27 parameters from FPC400 (As you can see from picture that I included, I want to read 27 parameters from adress 4112 - 4139 ) and store them in 27 different variables in my p
  7. Hi all, it's my first post but I guess not least as I have a project to do using my Unitronics V1210 with CANOpen and 2 ports for Modbus RTU on board. I want to establish basic communication with my VFD (Vacon 100 / now Danfoss company) by Modbus RTU. 1. I bought RJ11 six pin plug and prepare junction so I have two cables - yellow at PIN1 and red at PIN6. 2. I connected PLC (Port 1) to VFD (A,B inputs) 3. I wrote a basic program to read the register 2101 (which is not 0 for sure) and... nothing happens. No communication. What I have checked: - Ports termination (set to RS485
  8. I need to establish communication betwwen jazz (master) and energy analyzer-klea as slave using RS-485. Model of jazz is JZ10-11-UA24 with MJ20-RS. I need to read float value in klea starting addres 0 (Average voltage of three phases) I am newbie with unitronics and modbus ... Tnx in advance for any help. In attached files are: 1-klea modbus function 2-data adress in klea 3-example in klea
  9. Hi, I'm writing an application involving 1 master and 9 slave controllers - all Unitronics. The master PLC is a V1210. One of the slaves is also a V1210. The remaining 8 slaves are V130s. All i'm trying to do is sequentially read 1 coil from each of the slave PLCs. I know that this should be ridiculously easy... ...However, I'm finding that the "Function in Progress" bit gets stuck on after the master only attempting to read from 2 of the slaves. I've tried using timers of 100ms - probably excessive - after each Modbus Read Coils function block. Also, just to mention, I
  10. Hello Can you give me an advice how to solve the problem.Well,I have PLC Jazz 20 R31 connected to modem(Scada) by RS485(Modbus protocol). Everything works but from time to time the communication between the devices disappears and I have to reset the PLC If I wanna restore the communication. It happens often when some unit(pumps) is switched on. The file with my Modbus config is attached How to solve the problem? Sincerely Wladimir unitronics.U90
  11. Am using Red Lion display, model PAX2D, with an option card for RS232, and want use Modbus RTU to display values from a V350. I can get successful comm. by connecting RXD from display to RXD(pin 3) on V350, and TXD to TXD(pin 4) with no ground. As soon as common (pins 2 or 5 on V350) are connected to RS232 common on display, comm. halts. By wiring as above, I can read values from registers in the display, but they seem to be random numbers, not anywhere close to what they should be. For instance when reading register 40483(display baud rate), a value of 8960 is returned no matter wh
  12. Hi all, Im having a new application in which i want to fetch data from 5 - V130 Plcs and store into a database(MS access). Im planning to poll plc data by c# code. for just a serial interface i can get the data from the plc. But how can i call each unitID? Is there any examples for modbus c# codes. send me someguidelines. Thanks in advance, Jerin....
×
×
  • Create New...