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Found 8 results

  1. I want to make a connection Modbus TCP slave. For this I use a Arduino libraries. I am using the EK-TM4C1294XL Kit The could enter and take the example they have in the library, the example compiles correctly. Board is connected to a switch and a PC is connected also has disabled the Windows firewall. I use a Modbus TCP client program on the PC to read the records of the kit through Modbus. I can not read the values, tells me it can not connect to the target computer, the connection was denied. If I make ping the IP of the plate answer me well. Someone can help me solve the problem The code
  2. Hi, I am trying to implement Modbus RTU slave over TCP/IP using TIVA Tm4c1294 connected launchpad. The code has been successfully tested using Arduino. However, when I use the same code in energia, the launchpad gets pinged, but Modbus RTU does not work . Is there any library, hardware configuration which I need to change while migrating fro Arduino to TIVA? MgsModbus_test_Slave.rar
  3. Hi I am currently porting from Arduino to MSP430 platform. I want to port to attached Modbus Master and slave library to Energia. In modbus we have to set parity of serial communication, parity function is not there in MSP430 HardwareSerial.ccp library can anyone help me to add this function in energia library? Problem is not with modbus library but with Energia core library. Thanks SimpleModbusMasterV12.rar SimpleModbusSlaveV9.rar
  4. An output power display for my solar system. G2553 Launchpad, Blue 4-digit LED display, RS485 Transceiver SN65HVD12P (a low power, 3.3V version of the standard SN75176), this is all there is. All pins are used, 4 + 7 for the multiplexed LEDs (no resistors: Blue LED, 3.6V supply, output resistance of the pins limit the LED current) 3 pins for UART and send/receive for the SN65. 2 pins for 32768Hz xtal (I had this one soldered in on the LP, so why not use it) The MSP asks the inverter over RS485/Modbus "what is your current output power". After less than half a se
  5. Hi I am trying to do a MC to MC communication using modbus. I assigned static IP's to both my MC's. WiFiServer MbServer(MB_PORT); WiFiClient client = MbServer.available(); if(client.available()) { ///Do something////// } My question here is, Is there are way I can check the senders IP address before reading modbus packed data in the loop. Because the receiver MC can be jammed with high data throughput as its a open connection (i.e anyone can send data to the MC by knowing its IP address). I want to read the senders IP before doing any data processing. I know using UDP
  6. 0down votefavorite Hi, I am trying to implement Modbus TCP on TIVA 1294 using the following code. I am using a modbus slave simulator on a pc to check the following code. However, the code doesn't seem to be working. I have downloaded the code & the libraries fromhttp://myarduinoprojects.com/modbus.html. Please suggest me corrections if necessary. Also is there another working example available for modbus tcp/ip for ethernet on TIVA energia? Please guide. #include <SPI.h> #include <Ethernet.h> #include "MgsModbus.h" MgsModbus Mb; int inByte = 0; // incoming seri
  7. Hi, I want to implement a code for Modbus RTU over TCP/IP usng TM4C1294NCPDT launchpad. Does anyone know a library which can be used to implement it. Also is it possible to obtain data from a PLC using modbus TCP/IP and send it to a Server on cloud using the same ethernet port? Please help. Thanks.
  8. I am using the Modbus RTU library for Arduino for TIVA TM4c1294ncpdt. Slave(Modbus_Slave Software on PC) is responding to master request but master somekind does not proccess informations that he gets. So I can not regulate LED on master side over potentiometer on slave side. Also master stops sending request to slave after 10 requests sended to slave (when retry_count is set to 5). Problem is: 1) master send request to slave, 2) slave gets request 3) slave process request, 4) slave returns answer to master 5) master gets answer 6) master do not process slave answer After 5 reques
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