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Found 5 results

  1. 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
  2. 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 don't have all 9 slave controllers with me for testing - I've got 2. Is Modbus good at handling when it can't get thru to a particular node and just moving on to attempt the next one? Any help much appreciated, James
  3. 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
  4. 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 what the baud rate is actually set at, and I would be expecting to see a number from 0 to 5 for the 5 baud rates available on the display. PAX2D display manual: http://www.redlion.net/Products/Groups/Counter/Rate/PAX2D/Docs/04038.pdf PAX2D Modbus table: http://www.redlion.net/Products/Groups/Counter/Rate/PAX2D/Docs/04045.pdf PAX2D RS232 option card manual: http://www.redlion.net/Products/Groups/PAXOptionCards/PAXCDC1,2/Docs/12018.pdf V350 program: https://www.dropbox.com/s/86hmdjtqg0qdkqd/Test%20Display.vlp I talked with Red Lion tech support to make sure display setup is correct. Appreciate any help!
  5. MODBUS with .NET

    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....
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