Gateway Modbus RS485 - KNX
GATEWAYS
Description
The Ekinex® Modbus RS485 - KNX Gateway performs a protocol conversion between
a serial RS485 Modbus RTU and a KNX TP network. The device works as Modbus
master. The device integrates a KNX bus communication module and it is suitable for
mounting on a 35 mm DIN rail; it requires an auxiliary power supply.
Main features
• Plastic casing
• Connection to bus line with KNX terminal block
• Installation on 35 mm rail (according to EN 60715)
• 4 modular units (1 MU = 18 mm)
• IP20 protection degree (installed device)
• Weight 145 g
Technical data
• Power supply: 8...24 Vac or 12...35 Vdc
• Absorption at 24 Vdc: 3,5 VA
Communication
KNX side
• KNX TP (Twisted Pair) communication port electrically isolated from power supply
• 1440-byte volatile support “KNX image” memory buffer
Modbus RS485 side
• RS485 serial communication port, electrically isolated from power supply,
120 ohm termination resistance pluggable by a 1-way microswitch
• Modbus master RTU (Remote Terminal Unit) communication
• Selectable baud rate from 1200 to 115200 baud
• Device addressing from 0 to 250
• Coil, Input, Holding Register e Input Register data exchange
• Single and multiple register reading/writing
• 1440-byte volatile support “Modbus image” memory buffer
Configuration
• Ethernet communication port (IEEE 802.3), RJ45 connector, minimum cable
category: 5E
Delivery
The delivery includes the device and terminal blocks to connect to the KNX bus.
Other information
Modbus® is an open source, standard communication protocol suitable for
master / slave data exchange between smart devices in various applications, such as
industrial production, infrastructure, transportation and energy management.
Order information
Code
Application
Package
EK-BH1-TP-485
protocol conversion KNX - Modbus RTU
1 pcs.
Configuration and commissioning
By means of software tool CGEKBH1TP485.exe (download from www.ekinex.com)
Documentation
For more information see the technical documentation,
download from www.ekinex.com
Dimensions [mm]
72
5
25
20
20
70
45
90
Failure
KNX
Modbus
Device state
EK-BH1-TP-485
Modbus Master RS485 RTU
/ KNX TP Converter
bus KNX
1
2
8...24 Vac
+V
0V
POWER S.
12...35 Vdc
3
4
5
RT+
RT-
Com
RS485
ETHERNET
Dev.
Line
Area
TECHNICAL022EN
276
277
03
Introduction
18
Wall-mount devices
229
DIN-Rail mount modules
297
Supervision
311
Tools
315
Sales kit
321
Technical section
331
General terms of sale
335
General index
Gateway
DIN-RAIL MOUNT MODULES
EK-BH1-TP-485
Gateway Modbus
RS485-KNX
EK-BH1-TP-TCP
Gateway Modbus
TCP/IP-KNX
EK-BJ1-TP-IP
Gateway
BACnet IP-KNX
EK-BJ1-TP-MSTP
Gateway
BACnet
MS/TP-KNX
EK-BK1-TP
Gateway
DMX-KNX
EK-BM1-TP-xx
Gateway
M-Bus-KNX
EK-BN1-TP
Gateway
PROFINET-KNX
EK-BG1-TP
Gateway
DALI-KNX
Auxiliary power supply
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Electrically insulated RS485 serial
communication port
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1-way DIP switch to activate the line terminator
(120 Ohm)
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Modbus master RTU (Remote Terminal Unit)
communication
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BACnet slave communication
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BACnet communication
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PROFINET slave communication
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BACnet records exchange
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PROFINET records exchange
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DMX master communication
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250 kbaud communication speed
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From 1200 to 115200 baud communication
speed
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from 3000 to 38400 baud communication speed
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Ethernet (IEEE 802.3) communication port,
RJ45 connector
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M-Bus communication port
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Device addressing from 1 to 250
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Device addressing from 0 to 250
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Device addressing from 0 to 512
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Register exchange of Coil, Input, and Input
Register Holding Register type
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Reading and writing of single and multiple
registers
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1 byte register writing on a maximum of 512
DMX devices
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Volatile support memory with “image Modbus”
of 1440 byte
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Volatile support memory with“image BACnet”
of 1440 byte
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Volatile support memory with “image M-Bus”
of 1440 byte
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Volatile support memory with “image PROFINET
” of 1440 byte
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KNX TP (twisted pair) 9600 baud
communication port
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Volatile support memory with “image KNX” of
1440 byte
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Additional plug-in program
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Mounting on standard 35 mm rail (EN 60715)
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DALI communication protocol
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Ballast addressing to 64 devices
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