Documentation on the ELKA KNX/EIB-DMX Gateway

instabus KNX/EIB- 

Product documentation 

DMXGATE_1V00 GB.DOC 

Stand: 08.01.2009 

Seite: 1 von 8 

<strong>Documentation</strong> on the ELKA KNX/EIB-DMX Gateway 

Hardware 

Interface description 

RS232 - Interface 

The Gateway has a RS232-Schnittstelle with 9pol Sub D socket. The socket is wired 

as DCE (data communication equipment, how a modem), thus the connection to a 

normal PC interface is possible. As data format 8 data bits 1 stop bit and no parity 

are used. The Baud rate amounts to 9600 Baud. 

The socket is allocated as follows.: 

Pin Signal Signal direction Gateway-Function (DCE) 

1 DCD Gateway � ext. Device High-Level (TRUE) 

2 RxD Gateway � ext. Device Data-Output 

3 TxD Gateway � ext. Device Data-Input 

4 DTR Gateway � ext. Device Activiation RS232 

5 GND 

6 DSR Gateway � ext. Device High-Level (TRUE) 

7 RTS Gateway � ext. Device Handshake-Input 

8 CTS Gateway � ext. Device Handshake-Output 

9 ----

DMX – Interface 

Bridge activates 

internal Terminal 

resistor RT between 

DMX IN+ 

and DMX IN- (optional) 

DMX OUT 

230V L 

N 

DMX- 

DMX+ 

DMX+ : not inverting input/output 

DMX- : inverting input/output 



DMX+ 

DMX- 

EIB + - 

DMX IN 


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Programming- 

Interface 

Depending on programming (see below) the gateway works as DMX master or DMX 

Slave. Up to 512 channels can be administered in each case. 

.

Software 




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For configuration of the gateway you need the software DMXGate. This software 

defines the connection of the KNX/EIB group addresses to the DMX-channels. 

After starting of the software, the main window of the application appears. Via the 

menue item “Datei” (File) a new project can be created or an existing project can be 

opened.

Creating a new project 




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When a new project is created, a new window appears in which the KNX/EIB group 

addresses can be assigned to the DMX-channels. Depending on the setting chosen 

(see below) the group addresses are shown as 2- or 3-level display. The channel 

assignment is definded by selecting the desired DMX-channel, entering the 

corresponding group address ant the data type. As data types 1-bit (0/1) and 1-byte 

(0…255)-values are available. An input in the field “Benennung” (name) is optional 

and is only used for documentation purposes. After operation of the key 

“übernehmen” (accept), the data are shown next to the channel number in the list. 

The assignments can be changed by selecting the assignment, changing it and 

confirming it by “übernehmen” (accept). 

An assignment can be deleted by pressing the key “löschen” (delete).

Open an existing project 




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When an existing project has been opened, the assignments are shown which, as 

described above, can be changed and extended.

Settings 

Interface 




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Via the menue item „Einstellungen/Schnittstelle“ (settings/interface) the serial 

interface of the PC can be selected by means of which the configuration is to be 

loaded into the gateway. 

Options 

Under „Einstellungen/Optionen“ (settings/options) the display format of the group 

addresses can be chosen and the operation mode of the gateway can be 

determined. In the operation mode “Slave” the gateway receives data from the 

DMX512-system and converts these to KNX/EIB-massages which are sent to the 

assigned group addresses. In the operation mode “Master” the received KNX/EIBdata 

are sent cyclically to the assigned DMX512-channels. Here, starting with 

channel 1, all channels up to the highest channel number assigned are sent, even if 

individual channels are not assigned. 

Please note: DMX signals are digital data streams, which cannot be added simply by 

coupling. In addition a converter (Merger) is necessary, which is equipped with two 

receivers and one transmitter. The Merger receives all data and sends them correctly 

compound up. That means if you use a gateway in the operation mode “master” in 

combination with a further master (e.g. Control desk) a Merger is absolutely 

necessary.

Lists 




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The menue item „Listen" (lists) creates a text file in which the channel assignments 

are listed: 

**************************************************************** 

Konfiguration DMX - EIB Gateway V1.00 

---------------------------------------------------------------- 

Projekt: C:\DMX\WORK\DMXTEST.DGT 

Datum: 10.12.2001 15:08:15 

**************************************************************** 

Kanäle: 

Kanal GrpAdr Benennung 

------------------------------------------------------------- 

001 01/2/003 Kanal 1 1Byte(+) 

002 01/2/004 Kanal 2 1Byte(+) 

003 01/2/005 Kanal 3 1Byte(+) 

004 01/2/006 Kanal 4 1Byte(+) 

005 01/2/007 Kanal 5 1Byte(+) 

006 01/2/008 Kanal 6 1Byte(+) 

007 01/2/009 Kanal 7 1Byte(+) 

008 01/2/010 Kanal 8 1Byte(+) 

009 01/2/011 Kanal 9 1Byte(+) 

010 01/2/012 Kanal 10 1Byte(+) 

011 01/1/009 Kanal 11 schalten 







106 00/0/007 Kanal 101 1Byte(+) 

107 00/0/008 Kanal 101 1Byte(+) 

108 00/0/009 Kanal 101 1Byte(+) 

109 00/0/010 Kanal 101 1Byte(+) 

110 00/0/011 Kanal 101 1Byte(+) 

111 00/0/012 Kanal 101 1Byte(+) 

112 00/0/013 Kanal 101 1Byte(+) 

113 05/1/005 schalten 

114 05/0/006 schalten 

115 05/0/007 schalten 

116 08/0/003 1Byte(+)

Programming the Gateway 




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Via menue item „Prog/Start“ the programming of the gateway is initiated. First of all 

the program tries to get a connection to the gateway. When this has been successful, 

the firmware version of the gateway as well as the free memory sectors are indicated. 

Via the button „Start“ the configuration data can be loaded into the gateway.

Documentation on the ELKA KNX/EIB-DMX Gateway

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