Modbus protocol

Package Information

Version0.2.1 (2017-Apr-14)
CopyrightCopyright © 2017
AuthorsOleg Butko (deviator)
Registered byOleg
Dependencies none


To use this package, put the following dependency into your project's dependencies section:



Modbus protocol

Library provides modbus wrapper over RTU and TCP connections. By default using serialport package.

Simple usage:

auto mbus = new ModbusRTU(new SerialPort("/dev/ttyUSB0", 19200));

mbus.writeTimeout = 100.msecs;
mbus.readTimeout = 2.seconds;
mbus.readFrameGap = 5.msecs; // use for detect end of data pack

For tcp connection using std.socket.TcpSocket.

auto addr = "device_IP";
ushort port = 502; // or 503
auto mbs = new ModbusTCP(new InternetAddress(addr, port));
writeln(mbs.readInputRegisters(1, 17, 1));

ModbusRTU and ModbusTCP close serial port and socket in destructors.

You can configure library with custom serialport realization. For this past subConfiguration "modbus" "custom" to your dub.sdl or "subConfigurations": { "modbus": "custom" } to your dub.json. In this case Modbus don't manage your serial port or tcp connection. They uses through simple interfaces with read and write methods and you must close opened connections by yourself.


import myserialport;
import modbus;
import modbus.backend;

auto com = new MySerialPort();

auto mbus = new Modbus(new RTU(new class Connection{
                void write(const(void)[] msg) { com.write(msg); }
                void[] read(void[] buffer) { return; }

auto registers = mbus.readInputRegisters(device, address, count);

Available versions

0.2.1 0.2.0 0.1.1 0.1.0 0.0.2 0.0.1 ~master