Modbus tcp сервер linux

Saved searches

Use saved searches to filter your results more quickly

You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session.

Open-source Modbus TCP to Modbus RTU (RS-232/485) gateway.

License

3cky/mbusd

This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Sign In Required

Please sign in to use Codespaces.

Launching GitHub Desktop

If nothing happens, download GitHub Desktop and try again.

Launching GitHub Desktop

If nothing happens, download GitHub Desktop and try again.

Launching Xcode

If nothing happens, download Xcode and try again.

Launching Visual Studio Code

Your codespace will open once ready.

There was a problem preparing your codespace, please try again.

Latest commit

Git stats

Files

Failed to load latest commit information.

README.md

mbusd is open-source Modbus TCP to Modbus RTU (RS-232/485) gateway. It presents a network of RTU slaves as single TCP slave.

That is a TCP-Slave (or server) which acts as a RTU-master to get data from Modbus RTU-slave devices.

• Small footprint — suitable to run on embedded devices and SBCs like Raspberry Pi
• Multi-master — multiple TCP masters can access slave devices in RTU network using same gateway
• Robustness — can retry requests with mismatched response CRC
• Flexible RTU modes — speed/parity/stop-bits/timeouts can be configured for RTU network
• Support for both of automatic and manual (using RTS bit) direction control types for RS-485 transceivers

• 01: Read coil status
• 02: Read input status
• 03: Read holding registers
• 04: Read input registers
• 05: Force single coil
• 06: Preset single register
• 07: Read exception status
• 15: Force multiple coils
• 16: Preset multiple registers

Please note all other function codes (including vendor-specific extensions) are supported on a «best-effort» basis and most likely will fail.

$ git clone https://github.com/3cky/mbusd.git mbusd.git $ cd mbusd.git $ mkdir -p build && cd build $ cmake -DCMAKE_INSTALL_PREFIX=/usr .. $ make $ sudo make install 

Compile time options can be altered in many ways, e.g. by using the following tools in the build dir:

• ccmake — usually in the package cmake-curses-gui
• cmake-gui — usually in the package cmake-qt-gui

 mbusd [-h] [-d] [-L logfile] [-v level] [-c cfgfile] [-p device] [-s speed] [-m mode] [-t] [-y file] [-Y file] [-A address] [-P port] [-C maxconn] [-N retries] [-R pause] [-W wait] [-T timeout] -h Usage help. -d Instruct mbusd not to fork itself (non-daemonize). -L logfile Specifies log file name ('-' for logging to STDOUT only, default is /var/log/mbusd.log). -v level Specifies log verbosity level (0 for errors only, 1 for warnings and 2 for also information messages.) If mbusd was compiled in debug mode, valid log levels are up to 9, where log levels above 2 forces logging of information about additional internal events. -c cfgfile Read configuration from cfgfile. -p device Specifies serial port device name. -s speed Specifies serial port speed. -m mode Specifies serial port mode (like 8N1). -t Enable RTS RS-485 data direction control (if not disabled while compile). -y file Enable RS-485 direction data direction control by writing '1' to file for transmitter enable and '0' to file for transmitter disable -Y file Enable RS-485 direction data direction control by writing '0' to file for transmitter enable and '1' to file for transmitter disable -A address Specifies TCP address to bind (default 0.0.0.0). -P port Specifies TCP port number (default 502). -C maxconn Specifies maximum number of simultaneous TCP connections. -N retries Specifies maximum number of request retries (0 disables retries). -R pause Specifies pause between requests in milliseconds. -W wait Specifies response wait time in milliseconds. -T timeout Specifies connection timeout value in seconds (0 disables timeout). -b Instructs **mbusd** to reply on a broadcast. 

Please note running mbusd on default Modbus TCP port (502) requires root privileges!

mbusd can read the configuration from a file specified by -c command line flag. Please see example configuration file for complete list of available configuration options.

mbusd has systemd support. The build system detects whether the system has systemd after which sudo make install installs the mbusd@.service file on systems with systemd active.

The mbusd service can be started via:

# systemctl start mbusd@.service 

where is escaped serial port device short name (like ttyUSB0 for /dev/ttyUSB0 device name or serial-rs485 for /dev/serial/rs485 device name).

mbusd started by systemd will read its configuration from file named /etc/mbusd/mbusd-.conf . This way it’s possible to run multiple mbusd instances with different configurations.

To see the mbusd service status:

# systemctl status mbusd@.service 

To monitor the mbusd service:

# journalctl -u mbusd@.service -f -n 10 

To start the mbusd service on system boot:

# systemctl enable mbusd@.service 

Please check systemd documentation for other usefull systemd commands

Please file issue with attached debug log in verbose ( -v9 ) mode, i.e.:

 # mbusd -L/tmp/mbusd.log -p /dev/ttyUSB0 -s 9600 -P 502 -d -v9 

Unless you were prompted so or there is another pertinent reason (e.g. GitHub fails to accept the bug report), please do not send bug reports via personal email.

Workflow for code contributions

1. Fork it and clone forked repository
2. Create your feature branch ( git checkout -b my-new-feature )
3. Make your changes
4. Commit your changes ( git commit -am ‘Add some feature’ )
5. Push to the branch ( git push origin my-new-feature )
6. Create new Pull Request

Dependencies: please see the correct OS-distribution section in the .gitlab-ci.yml

With all dependencies met, one is able to build and execute tests issuing the following bash commands:

# build mkdir output.dir/ && cd $_ cmake ../ && make # execute all tests (cd ../ && python tests/run_itests.py output.dir/mbusd) 

Источник

Saved searches

Use saved searches to filter your results more quickly

You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session.

An example for a Modbus TCP server written in Python with pyModbusTCP

Johannes4Linux/Simple-ModbusTCP-Server

This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Sign In Required

Please sign in to use Codespaces.

Launching GitHub Desktop

If nothing happens, download GitHub Desktop and try again.

Launching GitHub Desktop

If nothing happens, download GitHub Desktop and try again.

Launching Xcode

If nothing happens, download Xcode and try again.

Launching Visual Studio Code

Your codespace will open once ready.

There was a problem preparing your codespace, please try again.

Latest commit

Git stats

Files

Failed to load latest commit information.

README.md

This is the file I have used for my video about creating a Modbus TCP server in Python. Here is the link to my video.

The file Simple_ModbusServer.py contains the code for a simple Modbus Server with the following register description:

Holding Register Addr.	Description
0	Server writes a random value to it every 500 ms
1	Server monitors this register for changes. If the value is changed by the client, the server will print out the new value

To run the script, you need to have pyModbusTCP installed on your machine. To install it, you can use:

sudo pip install pyModbusTCP 

About

An example for a Modbus TCP server written in Python with pyModbusTCP

Источник

Saved searches

Use saved searches to filter your results more quickly

You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session.

License

adpuckett87/modbus-client-server

This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Sign In Required

Please sign in to use Codespaces.

Launching GitHub Desktop

If nothing happens, download GitHub Desktop and try again.

Launching GitHub Desktop

If nothing happens, download GitHub Desktop and try again.

Launching Xcode

If nothing happens, download Xcode and try again.

Launching Visual Studio Code

Your codespace will open once ready.

There was a problem preparing your codespace, please try again.

Latest commit

Git stats

Files

Failed to load latest commit information.

README.md

• modbus-client is a standalone command line Modbus TCP client
• modbus-server is a Modbus TCP server that uses mysql to store register values

modbus-client ip_address slave_id r reg_type address [num_reg format] 

modbus-client ip_address slave_id w reg_type address value [format] 

• a — floating point abcd
• b — floating point badc
• c — floating point cdab
• d — floating point dcba
• (s)1 — 16-bit register. Optionally signed. Default.
• (s)3 — 32-bit register. Optionally signed.
• (s)6 — 64-bit register. Optionally signed.
• (s)k — 32-bit Mod10k. Optionally signed.
• (s)l — 48-bit Mod10k. Optionally signed.
• (s)m — 64-bit Mod10k. Optionally signed.

From libmodbus documentation:

chmod +x ./autogen.sh ./autogen.sh ./configure make install 

May need to do this depending on distribution

cp src/.libs/libmodbus.so* /usr/lib/ ln -s -f /usr/lib/libmodbus.so.5.1.0 /usr/lib/libmodbus.so.5 ln -s -f /usr/lib/libmodbus.so.5.1.0 /usr/lib/libmodbus.so 

gcc modbus-client.c -o modbus-client `pkg-config --libs --cflags libmodbus` 

gcc inih/ini.c modbus-server.c -o modbus-server -std=gnu99 `mysql_config --cflags --libs` `pkg-config --libs --cflags libmodbus` cp modbus-server /usr/bin/ 

Make sure mysql is installed with libmysqlclient-dev

Choose a database and create the following table

CREATE TABLE IF NOT EXISTS `modbusServer` ( `id` int(11) NOT NULL AUTO_INCREMENT, `regType` int(11) NOT NULL, `address` int(11) NOT NULL, `val` int(11) NOT NULL DEFAULT '0', `modifiedCount` int(11) NOT NULL DEFAULT '0', `updated` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, PRIMARY KEY (`id`), KEY (`regType`), KEY (`address`), UNIQUE KEY (`regType`, `address`) ) ENGINE=InnoDB; 

Copy ini to /etc and fill in mysql information. Mysql user should have read/write access

Optionally install modbus-server as a service

Install runit and execute the following commands

mkdir -p /etc/sv/modbus-server/log mkdir /var/log/modbus-server cat > /etc/sv/modbus-server/run &1 EOM cat > /etc/sv/modbus-server/log/run  

About

Источник