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Found 6 results

  1. 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
  2. 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
  3. 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
  4. 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.
  5. 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
  6. 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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