Industrial converter/gate - MODBUS - RS232/RS422/RS485-ETHERNET - fiber- amplification - DIN bus - MESR901/MESR902/MESR921/MESR9

Eliminate connectivity issues between Modbus ASCII - RTU - TCP devices.

New! 2-Port Ethernet Models

Features
- Flat industrial housing
- Modbus Master/Slave flexibility
- Web server, configuration software
- Complete fiber optic options
- Low latency, high throughput.
- "Heartbeat" connection
- Ethernet Pass-Through port
- Built-in traffic monitor
- Saves space on DIN rail
- Modbus Master or Slave can operate on any serial or Ethernet port
- Simple programming via a web browser or local port.
- Compact solution, no media converter required
- Real-time status monitoring
- Communication error detection and automatic connection to keep the system online
- Optional second Ethernet port acts as an Ethernet switch
- Immediate verification of successful installation and simple network diagnostics.

Specifications
- Serial ports can be configured as RS-232, RS-422/485.
- Modbus RTU or ASCII on serial ports.
- Support for up to 16 simultaneous Modbus TCP master devices.
- Modbus Messaging priority control (source or function code selection).
- Auto-detection of 10/100Base-T copper and fiber optic Ethernet connections.
- Operating temperature: -34 to 74°C (storage: -40 to 80°C).
- Operating voltage range: 10-48 VDC.
- Management: Multiple TCP/IP client sessions.
- Transfer rate up to 230 Kbps.

Model No.	Serial ports*	Serial connector**	Ethernet port(s)	Ethernet media	Ethernet connector(s)
MESR901	1	DB9 and TB	1	Copper	RJ 45
MESR901-MC	1	DB9 and TB	1	Multi-Mode Fiber	SC
MESR901-MT	1	DB9 and TB	1	Multi-Mode Fiber	ST
MESR901-SC	1	DB9 and TB	1	Single-Mode Fiber	SC
MESR901-ST	1	DB9 and TB	1	Single-Mode Fiber	ST
MESR902T	2	TB TB	1	Copper	RJ 45
MESR902T-MC	2		1	Multi-Mode Fiber	SC
MESR902T-MT	2	TB	1	Multi-Mode Fiber	ST
MESR902T-SC	2	TB	1	Single-Mode Fiber	SC
MESR902T-ST	2	TB	1	Single-Mode Fiber	ST
MESR921	1	DB9 and TB	2	(2) Copper	(2) RJ45
MESR921-MC	1	DB9 and TB	2	Multi-Mode Fiber, Copper	(1) SC, (1) RJ45
MESR921-MT	1	DB9 and TB	2	Multi-Mode Fiber, Copper	(1) ST, (1) RJ45
MESR921-SC	1	DB9 and TB	2	Single-Mode Fiber, Copper	(1) SC, (1) RJ45
MESR921-ST	1	DB9 and TB	2	Single-Mode Fiber, Copper	(1) ST, (1) RJ45
MESR922T	2	TB	2	(2) Copper	(2) RJ45
MESR922T-MC	2	TB	2	Multi-Mode Fiber, Copper	(1) SC, (1) RJ45
MESR922T-MT	2	TB	2	Multi-Mode Fiber, Copper	(1) ST, (1) RJ45
MESR922T-SC	2	TB	2	Single-Mode Fiber, Copper	(1) SC, (1) RJ45
MESR922T-ST	2	TB	2	Single-Mode Fiber, Copper	(1) ST, (1) RJ45

* All serial ports are software configurable to RS-232, RS-485, and RS-422.
**Models with one serial port offer DB9 and Terminal Block for serial connection. DB9 is used for RS-232 and Terminal Block for RS-422/485.
40km, 80km versions available on request. Visit www.bb-europe.com/VESR

Applications
- Industrial devices (programmable logic controllers, drives, motor control, process analyzers)
- OPC server applications
- PC controllers (Think and Do, Steeplechase)
- Vlinx™ Modbus gateways connect devices on Modbus serial networks (RS-232, RS-422, and RS-485) with devices on Modbus TCP networks, enabling seamless integration of all Modbus devices.
- Access to each serial port via LAN or WAN is provided for up to 16 simultaneous Modbus TCP master devices.
Modbus MESR gateways offer a wide range of Ethernet port configurations - from standard copper RJ-45 to all fiber optic options.
Versions are available with an additional Ethernet port that acts as an Ethernet switch, enabling pass-through connectivity for other Ethernet devices.
The port can be used to connect multiple gateways.

Modbus Problem 1 Ethernet-master serial devices-slave MESR9xx modules can be used to integrate slave devices into a MODBUS TCP network. This allows TCP master devices to control serial slave devices.

Modbus 2 Problem Serial Devices [&] Ethernet - Master, Serial Devices [&] Ethernet - Slave MESR9xx modules can also integrate multiple master devices in serial and Ethernet networks.

Modbus 3 Problem Serial Master Devices with IP Slave Devices Serial Master Devices Can Be Used to Control IP Slave Devices

Modbus 4 Problem Two slave devices with identical ID This scenario requires two slave devices with the same built-in ID. This can be achieved by placing them on different serial ports.

Modbus 3 Problem Identical Networks In this scenario, identical or redundant production lines can be controlled by the same IP Master device. This allows you to duplicate networks that need to be configured identically, saving time on documentation and maintenance.