Archive for the ‘Using’ Category

Multiple weather sensors

Tuesday, May 5th, 2015

Communication Failures will sometimes arise if you have 2 or more weather sensors of the same type and with the same channel selected. One or two sensors are sometimes not received for a few hours. The reason is that they transmit during this period on the same moment. The interval time differs a very little bit for each sensor and the transmit period shifts slowly and at a certain time both sensors transmit on a different time again and are received again.

The solution is to select another channel on each sensor of the same type or use different sensor types.
Note: TEMP1, TEMP2 are different types but THR128 and THC138 are the same types as they are both TEMP1 sensors!
The THGR810 is a 10 channel sensor and you can use 10 of these sensors without having the Communication Failure due to sensor transmission overlap.
If different channels are selected or different types are used and communication failures occur an out of range is the most expected problem. Don’t install the sensors near metal objects because this can limit the range too.

It can still happen that sensors transmit at the same time when having different sensor types or different channels selected but not for a long period and Communication Failures will not appear due to this.

For the list of supported weather sensor types see:

How to control HomeEasy HE8xx modules.

Friday, February 27th, 2015

RFXCOM supports the HomeEasy AB600 (ARC), HE2xx (AC) and HE4xx (HE EU) protocols.
The HE8xx protocol is not supported!
But the HE8xx modules can be controlled by RFXCOM using an ARC, AC or HE EU protocol.

The HE8xx remote transmits multiple protocols, eg HE8xx, HE EU, AC and ARC.
If a HE8xx dimmer is paired with a HE8xx remote the HE8xx protocol is used. The RFXCOM receives only the HE EU, AC and ARC protocols. If you try to control the HE8xx dimmer with one of these received codes is does not operate because the dimmer is using the HE8xx code.

Reset the HE8xx dimmer to remove all paired remotes from the dimmer,
Put the HE8xx dimmer in learning mode and transmit an ON command with the RFXCOM using one of the protocols and codes (house code, ID, unit code) as received by the RFXCOM from the HE8xx remote.
The HE8xx dimmer can now be controlled using the HE8xx remote and the RFXCOM.