ModBus

ESP8266: Reading Voltage from SDM120 Modbus Power Energy Meter

Posted on April 10, 2018 by KMtronic

http://en.trialcommand.com/blog/esp8266-slave-modbus-tcpip-no-libraries/ /* * More Tutorials: * Website http://trialcommand.com * In English: http://en.trialcommand.com * En Español: http://en.trialcommand.com */ #include <ESP8266WiFi.h> const char* ssid = “KMTRONIC”; const char* password = “12345678”; // RS485 Control pin const int RS485_control = D0; // Receive buffer long Buffer[9]; int VoltageReadCommand[] ={0x01, 0x04, 0x00, 0x00, 0x00, 0x02, 0x71, . . .

Reading Voltage from SDM120 Modbus Power Energy Meter using KMtronic TCPRS485 bridge via PHP

Posted on March 7, 2018 (March 27, 2018) by KMtronic

Reading Voltage from SDM120 Modbus Power Energy Meter using TCP<>RS485 bridge via PHP. Bridge IP : 192.168.1.199 Bridge PORT : 9761 SDM120 Energy Meter Speed: 2400/8/N/1 PHP file <?php function hexTo32Float($strHex) { $v = ($strHex); $x = ($v & ((1 << 23) – 1)) + (1 << 23) * ($v >> 31 | 1); . . .

Arduino uno (modbus master) vs sdm120 (modbus Slave)

Posted on February 23, 2018 by KMtronic

More information: http://puaks.blogspot.bg/2018/02/arduino-uno-vs-sdm120.html More information: http://puaks.blogspot.bg/2018/02/arduino-uno-vs-sdm120.html . . .

Testing Radzio Modbus Master Simulator with KMtronic RS485 RTU Serial Converter

Posted on February 19, 2018 (February 23, 2018) by KMtronic

Testing Radzio Modbus Master Simulator with KMtronic RS485 RTU Serial Converter KMtronic USB to RS485 FTDI Interface Converter – BOX SDM230 Modbus 220/230V Single Phase Energy Meter http://en.radzio.dxp.pl/modbus-master-simulator/ . . .

Modbus slave example 2: Arduino float number into HEX ModBus register

Posted on February 16, 2018 (February 23, 2018) by KMtronic

/** * Modbus slave example 2: * The purpose of this example is to link the Arduino digital and analog * pins to an external device. * * Recommended Modbus Master: QModbus * http://qmodbus.sourceforge.net/ */ #include <ModbusRtu.h> #define ID 1 Modbus slave(ID, 0, 0); // this is slave ID and RS-232 . . .