[collectd] [PATCH] plugin.c: prevent re-adding read functions

2011-01-10 Thread Blaise Tarr
When multiple LoadPlugin options are used with a plugin, the plugin is only loaded once, however the plugin's read function is invoked multiple times at every interval. This in turn causes undesired redundant data to be sent to the write plugins. This patch prevents a plugin's read function from b

Re: [collectd] Modbus support

2011-01-10 Thread Matt Baker
Hi Florian, If you have a look at http://en.wikipedia.org/wiki/Modbus you can see the difference in frame format. Basically there are three variants: Modbus RTU - modbus over serial interface, includes using CRC calculations for error checking Modbus RTU over TCP - sends the RTU o