Vlinx™ Modbus Gateways
Industrial Modbus Ethernet to Serial Gateways
Eliminate Connectivity Problems between Modbus Devices ASCII - RTU - TCP
 MESR901 |
 MESR902T-SC |
 |
Vlinx™ Modbus Gateways bridge devices on Modbus serial networks (RS-232, RS-422 or RS-485) with those on Modbus TCP networks, allowing seamless integration of any Modbus device. Each serial port is accessible over a LAN or WAN by up to 16 simultaneous Modbus TCP masters. MESR series Modbus Gateways boast an extensive line-up of Ethernet port configurations – from standard RJ-45 copper to almost any fiber optic option. Versions are available with an additional Ethernet port that functions like an Ethernet switch, allowing pass-through connectivity for other Ethernet devices. The port can be used to “daisy chain” multiple gateway.
Features
- Slim, Industrial Enclosure
- Modbus Master/Slave Flexibility
- Web Server, Configuration Software
- Complete Fiber Options
- Low Latency, High Throughput
- Heartbeat Connection
- Ethernet Pass Through Port
- Built-in Traffic Monitor
Benefits
- Save DIN rail space
- Modbus master or slave can be on any serial port or on the Ethernet port
- Easy programming through web browser or local port
- One-box solution, no media converter required
- View status in real time
- Detects communication failures and automatically reconnects to keep the system online
- Optional second Ethernet port functions like an Ethernet switch
- Instant verification of successful installation and simple net work diagnostics
Applications
- Industrial devices (PLCs, drives, motor controls, process analyzers)
- OPC server applications
- PC controllers (Think and Do, Steeplechase)
Specifications
- Serial RS-232, RS-422/485 software configurable
- Modbus RTU or ASCII on serial ports
- Supports up to 16 simultaneous Modbus TCP masters
- Modbus messaging priority control
(source or function code selectable) - Auto detecting Ethernet 10/100Base-T copper
and fiber optic connections - Operating temp: -40 to 80°C
- 10-58 VDC operation
- Management: Multiple TCP/IP client sessions
DeviceNet Expansion Card
GSM/GPRS Cellular Modem Expansion Card
(VFG 2000 & 3000 only)
Category 5 Copper Ethernet
| Model No. |
Serial Ports
|
Serial Connection
|
Ethernet Ports
|
Ethernet Connector
|
| MESR901 |
1
|
DB9 & TB
|
1 | RJ45 |
| MESR902T |
2
|
TB
|
1 | RJ45 |
| MESR921 |
1
|
DB9 & TB
|
2 | RJ45 |
| MESR922T |
2
|
TB
|
2 | RJ45 |
Multi-mode Fiber Optic Ethernet
| Model No. |
Serial Ports
|
Serial Connection
|
Ethernet Ports
|
Ethernet Connector
|
| MESR901-MC |
1
|
DB9 & TB
|
1 | SC |
| MESR901-MT |
1
|
DB9 & TB
|
1 | ST |
| MESR902T-MC |
2
|
TB
|
1 | SC |
| MESR902T-MT |
2
|
TB
|
1 | ST |
| MESR921-MC** |
1
|
DB9 & TB
|
2 | SC |
| MESR921-MT** |
1
|
DB9 & TB
|
2 | ST |
| MESR922T-MC** |
2
|
TB
|
2 | SC |
| MESR922T-MT** |
2
|
TB
|
2 | ST |
**Second Ethernet Port is CAT 5 Copper w/RJ45
Single-mode Fiber Optic Ethernet
| Model No. |
Serial Ports
|
Serial Connection
|
Ethernet Ports
|
Ethernet Connector
|
| MESR901-SC |
1
|
DB9 & TB
|
1 | SC |
| MESR901-ST |
1
|
DB9 & TB
|
1 | ST |
| MESR902T-SC |
2
|
TB
|
1 | SC |
| MESR902T-ST |
2
|
TB
|
1 | ST |
| MESR921-SC** |
1
|
DB9 & TB
|
2 | SC |
| MESR921-ST** |
1
|
DB9 & TB
|
2 | ST |
| MESR922T-SC** |
2
|
TB
|
2 | SC |
| MESR922T-ST** |
2
|
TB
|
2 | ST |
**Second Ethernet Port is CAT 5 Copper w/RJ45
Modbus Problem #1
Ethernet Master Serial Slaves
MESR9xx modules can be used to integrate serial slave devices on a MODBUS TCP network. This allows TCP Masters to control serial slave devices.
Modbus Problem #2
Serial & Ethernet Masters, Serial & Ethernet Slaves
MESR9xx modules can also integrate multiple master devices onto serial and Ethernet networks.
Modbus Problem #3
Serial Masters with IP Slaves
Serial Masters can be used to control IP slaves
Modbus Problem #4
Two Identical Hard Coded Slaves
In this scenario, two slave devices that are hard coded with the same ID are required. This is accomplished by placing them on different serial ports.Serial & Ethernet Masters, Serial & Ethernet Slaves
Modbus Problem #5
Identical Networks
In this scenario, identical or backup production lines can be controlled by the same IP Master. This allows the duplicate networks to be configured identically, saving documentation and maintenance time.
