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Borec

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Everything posted by Borec

  1. Hello, thanks for support. I tried everything and finally helped... actualization of the software. I downloaded the the latest version of Visilogic 9.8.79 and updated the PLC OS, now it works. KR, Bartosz
  2. Hello, thank you all for quick responses. After your suggestions and contact with Unitronics support I created a final version of my program. Unfortunately, there are no received messages. Messages are received only during power-up of the converter (some noise). I checked my cable - there is galvanic connection between pins and endings. I also swapped cables many times. Here is the oscillogram of the Modbus signal at drive inputs. And below oscillogram when I connect with my testing software (and it works). I know that probe's polarization is inversed. What concerns me
  3. 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
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