The heat pump manager can communicate with external systems via an LWPM 410 expansion module which is available as an accessory. The Modbus protocol is used as a neutral interface protocol. It is freely available on the market and can be converted for use on other bus systems.
It must be taken into consideration that more than 100 variables are transmitted via the extension, which can be read out individually or as a batch and transferred to a higher-level bus system. Caution, can be used from WPM 2006/2007 and following heat pump managers! Further instructions and information, as well as the data point list, can be found at www.dimplex.de/wiki.