Fluent::Plugin::Modbus

Fluent plugin to retrieve data from Modbus device and store the values into mysql

Installation

$ git clone https://github.com/iomz/fluent-plugin-modbus.git
$ cd fluent-plugin-modbus & bundle

Usage

$ mysql -u root -p
mysql> CREATE USER 'modbus'@'localhost' IDENTIFIED BY 'modbus_pw';
mysql> CREATE DATABASE 'modbus_db';
mysql> GRANT ALL PRIVILEGES ON modbus_db.* to 'modbus'@'localhost';
mysql> FLUSH PRIVILEGES;
mysql> QUIT;

$ vim modbus.conf
<source>
    type modbus
    tag modbus.sensor1     # An unique sensor name following 'modbus.'
    hostname 192.168.0.200 # ModBus host
    port 502               # ModBus port
    polling_time 0,30      # Poll data at seconds separated by colons
    modbus_retry 1         # Retry counts for TCP connection to ModBus host
    reg_size 16            # Register size of ModBus I/O device in bit
    reg_addr 0             # Address of the register to read
    nregs 1                # Number of sequential registers to read [1-2]
</source>

<match modbus.sensor1>
    type copy
    <store>
        type stdout
    </store>
    <store>
        type mysql_modbus
        dbhost 127.0.0.1       # DB host
        username modbus        # DB username
        password modbus_pw      # DB password
        database modbus_db        # Database to use
        max_modbus_input 10000 # Maximum value FROM ModBus I/O
        max_sensor_output 2000 # Maximum value TO ModBus I/O FROM sensor devices
        unit W/m^2             # Unit for the sensor device
    </store>
</match>

$ fluentd -c modbus.conf 

TODO

More test cases needed

Copyright

Copyright (c) 2012- Kenichi YASUKATA, Iori MIZUTANI

Apache License, Version 2.0