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Found 6 results

  1. Hello, I just got informed about an issue with the program I have made for a Samba SM35 regarding Modbus settings. I use a Com Init block directly after a power-up bit that initializes factory com settings. If I enter Information Mode and change the serial settings for RS485 there, everything is fine until a power loss. The settings are overwritten at power-up. Is there a way to prevent the settings from getting restored to Com init settings after a power-loss or unit shut down?
  2. Hello! I have a next project where I have to use module EX9024D. For this project I use Unitronics Samba (SM43-J-T20) with v100-17-rs4 module (because this combo is what I have right now). Operation manual for EX9024D: https://www.expertdaq.com/media/downloads/ex-9021_ex-9022_ex-9024.pdf Basically I have to send #023-02.500 command to module (page 20). This command will generate -2.5V to output 3 (total 4 outputs, 0-3). This task is little over my head, especially when it comes to using ModBUS, so I will need help. How do I transmit this kind of command over ModBUS (I believe I also have to transmit character #, not sure tho)? Could anybody please explain and guide me through this? I have also tried to watch provided example files, but this is still too confusing to me. Best regards, Steven
  3. For RS-485 on the Visilogic V130 units, if the unit is being used by as a slave only, will setting the baud rate to 115,200 allow it to talk to Masters set on a lower baud rate. I cannot find anything in the literature that verifies or contradicts this.
  4. 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
  5. Hello, I am receiving a 15 byte long hex status message from a device over an RS-485 network and storing the message in an MI vector on a V570. The 5th and 6th bytes of the status message are the High and Low bytes of the value I want to display. the 5th byte stores in one MI and the 6th in the MI after (466 and 467). So if 5 is 04 and 6 is 8B I should get 1163 when converted to DEC. The values are coming in as 0004 and 008B, which if I convert gives me 262,283. My question is how do I combined only the MSB of the two registers to achieve the number I am looking for? I tried mapping register bytes, but apparently this only works when the bytes are in the same register. Thanks to anyone who can help me out with this. Sincerely, Jared
  6. Hello, We have a problem with Unitronics Jazz 2 series PLCs (JZ20-R31, +adapters MJ20-RS) trying to connect to modbus communication line. The problem is we cant initializate RS-485 com port, every configuration are restored to factory default (9600;7;1;even;n) after RS-485 cable connection to PLC and in system menu it is impossible to change communication parameters if RS-485 cable is connected (RS-232 com port we do not use). We do not have any problems with Jazz 1 series plcs using almost same program, same configuration. + U90 ladder we are using last version (v6.4.9) + Unitronics 2 series OS is last version (V2.30 (B08)) + Communication line is good (we checked). + We have two Jazz 2 series plcs with same problem. P.S sorry for my english.
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