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authorJonathan McCrohan <jmccrohan@gmail.com>2012-01-10 17:09:43 +0000
committerJonathan McCrohan <jmccrohan@gmail.com>2012-01-10 17:09:43 +0000
commit6342df0420d3588c6106135c73984fdd3e4adaf7 (patch)
treecb0b15e262ff3ea9f4ecbd49df7a043f7ab260f3
parentee3982b959cc82c44bd9d81e7197cd7a43431ce8 (diff)
downloadverteco-6342df0420d3588c6106135c73984fdd3e4adaf7.tar.gz
Add README.
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+modbuslog - 2012/01/10
+--------------------
+
+modbuslog is a program designed to read from a modbus device at predefined
+intervals and store the output to file.
+
+
+Compilation:
+--------------------
+modbuslog requires the libconfig (>1.4.8) and libmodbus (>3.0.1) libraries,
+and will not function without these libraries installed. Neither of these
+libraries are currently available (or if they are, are not of sufficient
+version) in the current Debian Stable release codenamed "Squeeze". This
+means that these dependencies must be manually fulfilled.
+
+libmodbus: It should be sufficient to backport the current version of
+ libmodbus from Debian Testing codenamed "Wheezy"
+ http://packages.debian.org/wheezy/i386/libmodbus5/download
+ http://packages.debian.org/wheezy/i386/libmodbus-dev/download
+
+libconfig: An older, incompatible version of libconfig currently exists
+ in Debian Squeeze (right the way up to Sid). An updated package
+ has been created and will hopefully be included in the next
+ Debian Stable release. In the mean time it is available here:
+ http://mentors.debian.net/package/libconfig
+ When it gets accepted, it will be available here:
+ http://packages.debian.org/source/testing/libconfig
+
+modbuslog uses a Makefile to ease compilation, and as such, can be compiled
+by simple navigating to the directory and running "make". This will recompile
+any packages that need to be compiled.
+
+These files can then be moved to the required directories on the target system.
+
+
+Required files:
+--------------------
+
+/sbin/modbuslog executable program
+/etc/modbuslog.cfg configuration file
+/var/modbuslog/ output directory where logs are stored
+/var/modbuslog/interval/interval.txt textfile storing unique interval
+
+
+Configuration:
+--------------------
+
+The configuration file for modbuslog is stored in /etc/modbuslog.cfg, and is
+arranged in a hierarchical structure suitable for libconfig.
+
+The modbus section defines the standard operating parameters for the modbus
+device, These include:
+ 1) device serial port in use
+ 2) baud baud rate in use
+ 3) data_bits number of data bits, commonly 8.
+ 4) parity parity, commonly E (even) or N (None).
+ 5) stop_bits stop bits, commonly 1.
+ 6) retry number of retries for each failed reading.
+
+The reading section defines the unique reading times that the program is
+required to log at. Each entry must contain:
+ 1) slaveid modbus slave id
+ 2) registertype type of modbus reading
+ 3) startaddress register to start reading from
+ 4) numregisters number of registers to read
+ 5) intervalvalue read register every x
+ 6) intervalunit (m) minutes or (h) hours
+