MODBUS TCP/UDP for RTU Gateway. Modbus TCP Master/Slave between Modbus RTU Master/Slave. 3 x RS485. 12-48VDC

Supports Modbus TCP/UDP master and slave
Supports Modbus RTU/ASCII master and slave
Max. TCP connections (masters) per serial port: 32
1 x RJ45 Ethernet
3 x RS485 ports
Max. 254 notes
Max. baud rate: 115.2kbps
12 - 48VDC / 1.7 Watts
Dimensions: 95 x 52 x 27 mm
Temp: -25 - +75°C
Static IP or DHCP
Web server for configuration (HTTP)
Automatic RS-485 direction control
Terminal blocks
Cost-effective Modbus gateway

ETH-MODGW735-I
1,491.00 DKK
Tax excluded
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Modbus has become a standard industrial communication protocol, and is now the most commonly available means of connecting industrial electronic devices. Modbus allows for communication between many devices connected to the same RS-485 network, for example, a system that measures temperature and humidity and communicates the results to a computer. Modbus is often used to connect a supervisory computer with a remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems.

ETH-MODGW735-I is a Modbus TCP to RTU/ASCII gateway that enables a Modbus/TCP host to communicate with serial Modbus RTU/ASCII devices through an Ethernet network, and eliminates the cable length limitation of legacy serial communication devices. The module can be used to create a pair-connection application (as well as serial-bridge or serial-tunnel application), and can then route data over TCP/IP between two serial Modbus RTU/ASCII devices, which is useful when connecting mainframe computers, servers or other serial devices that use Modbus RTU/ASCII protocols and do not themselves have Ethernet capability. 

The read-cache function is used to store previous requests and responses in the memory buffer of the tGW-700 module.  When other HMI/SCADA master controllers send the same requests to the same RTU slave device, the cached response is returned immediately. This feature dramatically reduces the loading on the RS-485 bus communication, ensures faster TCP responses, and improves the stability of the entire system.