MR-GW User Manual | EN
V 1.0 | Version 05/2020
Page 5 of 29
METZ CONNECT GmbH | Im Tal 2 | 78176 Blumberg | Deutschland
Tel. +49 7702 533-0 | Fax +49 7702 533-433
more Documentation: www.metz-connect.com
1.4
Qualified specialists
Qualified technical specialists in the sense of this manual are persons who are familiar with the described
devices and have a qualification corresponding to their activity.
This includes, for example:
Authorization to connect the device in accordance with VDE regulations and local EVU regulations, as
well as authorization to switch the device on, off and on in accordance with internal company
regulations.
Knowledge of the accident prevention regulations.
Knowledge of the use and application of the device within the system, etc.
1.5
Warranty terms
METZ CONNECT GmbH does not assume any liability or guarantee for consequences resulting from improper
use, in particular non-observance of the instructions for use and installation. The user must ensure that the
device is not operated outside the specified technical parameters. Any unauthorized alteration or modification
of the device, as well as any repairs carried out by the user on his own authority, shall constitute "misuse"
and/or "negligence" within the meaning of the warranty for the product and shall therefore exclude the
warranty for the coverage of possible consequential damage. Furthermore the warranty claim expires.
1.6
Disclaimer of warranty
The contents of this document have been carefully compiled and checked for conformity with the product in
terms of hardware and software. However, deviations cannot be completely ruled out. For this reason, the
information contained in this manual does not imply any obligation or warranty of any kind. As a result,
authors, companies and publishers do not assume any legal responsibility and will not assume any resulting
or other liability arising in any way from the use of this information or parts thereof, including for infringement
of patent rights and other rights of third parties that may result therefrom.
2
Description of the device
MR-GW is a compact Modbus RTU / Modbus TCP Gateway. The MR-Gateway enables bidirectional data
exchange between Modbus RTU fieldbus devices and a Modbus TCP master (client). The MR-GW can be
operated in two modes. Either as a transparent gateway in Modbus RTU over TCP mode or as a protocol
converter (Modbus TCP mode). The MR-Gateway can be connected to METZ CONNECT Modbus RTU devices
via two 4-pole terminals on the front of the device and a jumper plug. An integrated web server is used for
parameter settings, management and monitoring of the two interfaces (Ethernet / RS485). The web interface
is also used to update the firmware. The MR-Gateway is suitable for decentralized mounting in electrical sub-
distribution boards or in control cabinets on TH35 mounting rails in accordance with IEC 60715.
