Hi B.R.Wim,
The signals of the MS13-transmitter are received by the receiver.
What receivers do you have (TM13 or do you use an alarmset like SC2800)?
And what type CM-device are you using (RS232 of USB)?
Some suggestions (perhaps one of them will help):
1. In case of a CM11-USB you need an USB-driver.
In "apparaatbeheer" you can restart this driver.
2. You can try to control a device (e.g. an applaince-module) straight from a TS13.
Give them the same addresses (housecode and unitcode).
You have to find out the problem is in the Homeseercomputer or the 230Volt network.
3. Can you see any collisons (error-LED) on the Phase-coupler at the time the MS13 is switching?
4. Recent I had some USB-problems.
Then I installed an EXTERNAL powered-USB HUB. That solved the problem.
5. If you use Plugwise then it is possible that (probably after a windows update) the USB-drivers are damaged.
http://www.domoticaforum.eu/viewtopic.php?f=39&t=6001
6. Reboot the Homeseer Computer
Suc6, Verkenner