User Guide

Art. No. 12003
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ESERA GmbH. Errors and technical modification subject to change.  ESERA GmbH 2023
www.esera.de 12003 V4.0 R1.3 Manual Page 3 of 5
6 Software
The eBus Coupler Serial operational settings are: 2400 Baud, 8 data bits, no parity and 1 stop bit. Evaluation
software is not included in the scope of delivery for this product.
In order to evaluate eBus data we recommend the IP-Symcon Forum (http://www.ip-
symcon.de/wiki/EBus_Adapter) or the eBus Wicki page of eBus Friends (https://www.dokuwiki.org/dokuwiki#).
We also recommend the eBus integration for FHEM (http://www.fhem.de) or the eBus service for Linux.
This eBus coupler is not supported by Vaillant vrDIALOG software. An example for reading eBus data (VWMon
by Alexey Ozerov) can be found at http://baublog.ozerov.de/waermepumpe/vwmon-datenlogger-fuer-die-vaillant-
waermepumpe/
7 Connection Plan
Connection eBus
(module top side)
7 = not connected
8 = Trimmer for signal level
9 = not connected
10 = LED indicator for eBus
11 = eBus
12 = eBus
7.1 Connection Input Power
(module top side)
1 = Negative
2 = Positive
3 – 6 = not connected
8 Pinout of the RS232 Interface
The 1-Wire eBus Coupler provides a D-SUB 9-pin male connector as data interface for connection to a computer.
The following figure illustrates the pinout of this connector.