Modbus tcp master linux

Presentation

mbpoll is a command line utility to communicate with ModBus slave (RTU or TCP). It uses libmodbus ⟨http://libmodbus.org/⟩. This is a multiplatform project, the compilation was tested on GNU Linux x86 and x86_64, Microsoft Windows 7 x86 and GNU Linux ARM 6 (Raspbian). Although the syntax of these options is very close modpoll proconX program, it is a completely independent project. mbpoll can: • read discrete inputs • read and write binary outputs (coil) • read input registers • read and write output registers (holding register) The reading and writing registers may be in decimal, hexadecimal or floating single precision.

Quickstart guide

The fastest and safest way to install mbpoll is to use the APT repository from piduino.org ⟨http://apt.piduino.org⟩, so you should do the following : wget -O- http://www.piduino.org/piduino-key.asc | sudo apt-key add - sudo add-apt-repository 'deb http://apt.piduino.org stretch piduino' sudo apt update sudo apt install mbpoll This repository provides mbpoll and libmodbus (version 3.1.4) packages for i386, amd64, armhf and arm64 architectures. In the above commands, the repository is a Debian Stretch distribution, but you can also choose Ubuntu Xenial by replacing stretch with xenial. It may be necessary to install the software-properties-common package for add-apt-repository. For Raspbian you have to do a little different : wget -O- http://www.piduino.org/piduino-key.asc | sudo apt-key add - echo 'deb http://raspbian.piduino.org stretch piduino' | sudo tee /etc/apt/sources.list.d/piduino.list sudo apt update sudo apt install mbpoll The Raspbian repository provides Piduino packages for armhf architecture for Stretch only.

Build from source

For example, for a debian system: • Install libmodbus ⟨https://github.com/stephane/libmodbus.git⟩ (Version >= 3.1.4) : $ sudo apt-get install build-essential libtool git-core autoconf $ git clone https://github.com/stephane/libmodbus.git $ cd libmodbus $ ./autogen.sh $ ./configure $ make $ sudo make install You can also install it with apt if the version of libmodbus is greater than or equal to 3.1.4. For example to query a debian system: $ apt-cache show libmodbus-dev • Install piduino ⟨https://github.com/epsilonrt/piduino/tree/dev⟩ only if you want to manage the RS485 with a GPIO signal: $ sudo apt-get install cmake libcppdb-dev pkg-config libsqlite3-dev sqlite3 $ git clone https://github.com/epsilonrt/piduino.git $ cd piduino $ git checkout dev $ mkdir build $ cd build $ cmake .. $ make $ sudo make install • Generate Makefile with cmake: $ sudo apt-get install cmake pkg-config $ cd mbpoll $ mkdir build $ cd build $ cmake .. • Compile and install mbpoll: $ make $ sudo make install $ sudo ldconfig If you prefer, you can in the place of direct compilation create a package and install it: $ make package $ sudo dpkg -i * .deb That's all !

Examples

The following command is used to read the input registers 1 and 2 of the slave at address 33 connected through RTU /dev/ttyUSB2 (38400 Bd) _________________________________________________________________________________________________ $ mbpoll -a 33 -b 38400 -t 3 -r 1 -c 2 /dev/ttyUSB2 mbpoll 0.1-10 - FieldTalk(tm) Modbus(R) Master Simulator Copyright (c) 2015 epsilonRT, All rights reserved. This software is governed by the CeCILL license http://www.cecill.info> Protocol configuration: Modbus RTU Slave configuration. address = [33] start reference = 1, count = 2 Communication. /dev/ttyUSB2, 38400-8E1 t/o 1.00 s, poll rate 1000 ms Data type. 16-bit register, input register table -- Polling slave 33. Ctrl-C to stop) [1]: 9997 [2]: 10034 -- Polling slave 33. Ctrl-C to stop) [1]: 10007 [2]: 10034 -- Polling slave 33. Ctrl-C to stop) [1]: 10007 [2]: 10034 -- Polling slave 33. Ctrl-C to stop) [1]: 10007 [2]: 10034 ^C--- /dev/ttyUSB2 poll statistics --- 4 frames transmitted, 4 received, 0 errors, 0.0% frame loss everything was closed. Have a nice day !

Help

Источник

Modpoll Modbus Master Simulator

modpoll is a command line based Modbus master simulator and test utility. modpoll is using the FieldTalk ™ Modbus driver.

Installation

Windows

Download archive into a folder and extract the zip archive. The modpoll.exe command must be run from a Command Prompt:

Linux

The tarball contains multiple binaries for different CPU architectures. Add the version matching your system architecture to the path. Example for ARM platforms like Raspberry Pi:

export PATH=$PWD/modpoll/linux_arm-eabihf:$PATH

Usage

Usage: modpoll [OPTIONS] SERIALPORT|HOST [WRITEVALUES. ] Arguments: SERIALPORT Serial port when using Modbus ASCII or Modbus RTU protocol COM1, COM2 . on Windows /dev/ttyS0, /dev/ttyS1 . on Linux HOST Host name or dotted IP address when using MODBUS/TCP protocol General options: -m ascii Modbus ASCII protocol -m rtu Modbus RTU protocol (default if SERIALPORT contains /, \\ or COM) -m tcp MODBUS/TCP protocol (default otherwise) -m udp MODBUS UDP -m enc Encapsulated Modbus RTU over TCP -a # Slave address (1-255 for serial, 0-255 for TCP, 1 is default)\n -r # Start reference (1-65536, 1 is default) -c # Number of values to read (1-125, 1 is default), optional for writ ing (use -c 1 to force FC5 or FC6) -t 0 Discrete output (coil) data type -t 1 Discrete input data type -t 3 16-bit input register data type -t 3:hex 16-bit input register data type with hex display -t 3:int 32-bit integer data type in input register table -t 3:mod 32-bit module 10000 data type in input register table -t 3:float 32-bit float data type in input register table -t 4 16-bit output (holding) register data type (default) -t 4:hex 16-bit output (holding) register data type with hex display -t 4:int 32-bit integer data type in output (holding) register table -t 4:mod 32-bit module 10000 type in output (holding) register table -t 4:float 32-bit float data type in output (holding) register table -i Slave operates on big-endian 32-bit integers -f Slave operates on big-endian 32-bit floats -e Use Daniel/Enron single register 32-bit mode -0 First reference is 0 (PDU addressing) instead 1 -1 Poll only once only, otherwise every poll rate interval -l Poll rate in ms, (1000 is default) -o # Time-out in seconds (0.01 - 10.0, 1.0 s is default) Options for MODBUS/TCP, UDP and RTU over TCP: -p # IP protocol port number (502 is default) Options for Modbus ASCII and Modbus RTU: -b # Baudrate (e.g. 9600, 19200, . ) (19200 is default) -d # Databits (7 or 8 for ASCII protocol, 8 for RTU) -s # Stopbits (1 or 2, 1 is default) -p none No parity -p even Even parity (default) -p odd Odd parity -4 # RS-485 mode, RTS on while transmitting and another # ms after

Usage Examples

To retrieve continuously 10 Modbus holding registers starting from reference 500 of slave ID number 5 with Modbus RTU at 9600 baud, no parity on COM1 run:

modpoll -b 9600 -p none -m rtu -a 3 -r 500 -c 10 COM1

To retrieve once 5 floating point values starting from reference 100 with Modbus/TCP from slave device with IP 10.0.0.100:

modpoll -t4:float -r 100 -c 5 -1 10.0.0.100

modpoll -r 1201 10.0.0.100 1234

modpoll -r 1201 -c 1 10.0.0.100 1234

Источник

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