Alex, The easiest way to do this might be to write a shim that reads/writes the modbus and presents like an owserver on the other end. That way, it would just look like a different bus to all the clients. You would need some kind of config that sets the 1-wire id and the like. How much of the full 18b20 setup you wish to emulate is up to you.
just a thought, jerry On 06/24/2015 04:33 AM, Alex Shepherd wrote: > Hi Guys, > > I’m in the process of upgrading my heating control system system that > controls a Wood-Fired boiler that provides hot water for in-floor (concrete) > heating. I’m now using a standalone Autonics TZN4M-BC4 PID controller that > has a RTD temperature sensor and 4-20mA output driving a Johnson Controls > 0..90 deg positioner that controls the air inlet damper. I’m hoping this will > provide a higher degree of control and better fail-safe capability as I did > have a bit of a disaster last year… > > The PID controller also has a RS485 comms port that talks a limited subset of > the the Modbus protocol, but enough to read the PV and read/write the SV. I’m > not sure if I can get anything else as that is all the example .Net code > shows. > > Previously I had a DS18B20 sensing the temperature at the boiler and was > recording that value using temploggerd. Now that I no longer has the DS18B20, > I’m wondering if there is a way to re-inject the temperature from the PID > controller (if I can get it via the RS485 link using python say) and then > somehow writing it into the previous (or a new) device node so it keeps being > logged by temploggerd? > > Any suggestions? > > Regards > > Alex Shepherd > Hamilton, New Zealand > ------------------------------------------------------------------------------ > Monitor 25 network devices or servers for free with OpManager! > OpManager is web-based network management software that monitors > network devices and physical & virtual servers, alerts via email & sms > for fault. Monitor 25 devices for free with no restriction. Download now > http://ad.doubleclick.net/ddm/clk/292181274;119417398;o > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------------------------------ Monitor 25 network devices or servers for free with OpManager! OpManager is web-based network management software that monitors network devices and physical & virtual servers, alerts via email & sms for fault. Monitor 25 devices for free with no restriction. Download now http://ad.doubleclick.net/ddm/clk/292181274;119417398;o _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
