The DCB Ether-Modbus gateway allows serial Modbus RTUs to communicate and interoperate with Modbus/TCP based controllers. Modbus has been extended to operate over Ethernet using the IP protocol suite. This gateway converts between the Modbus TCP/IP protocol and Modbus ASCII/RTU protocols transparently. The EMB-02 enables one or more MODBUS controllers to communicate with modbus ASCII/RTU based serial RTUs but it will not allow Modbus/TCP RTUs to operate with a serial MODBUS controller.

   DCB's EMB-02 Modbus/TCP to
Two serial ports that each support RS-232 - RS-422 - RS-485 2/4 wire

Configuration via Browser, telnet or serial port Enable serial Modbus devices to communicate with a Modbus/TCP host computer SNMP agent functionality Protocol aware... minimum configuration needed Two serial ports that each support RS-232, RS-422, RS-485 2 or 4 wire 10 or 100 Mbps Ethernet RS-232 interface speeds to 230 Kbps RS-485 Bus mastering for two independent poll strings DIN Rail or wall mounting 9 to 36 volts DC and or 115VAC (other power options are available)

FEATURES

• Configuration via Browser, telnet or serial port
• Enable serial Modbus devices to communicate with a Modbus/TCP host computer
• SNMP agent functionality
• Protocol aware... minimum configuration needed
• Two serial ports that each support RS-232, RS-422, RS-485 2 or 4 wire
• 10 or 100 Mbps Ethernet
• RS-232 interface speeds to 230 Kbps
• RS-485 Bus mastering for two independent poll strings
• DIN rail or wall mounting

The EtherModbus gateway contains two independent serial ports. Each may be configured as RS-232, RS-422, or RS-485 (2 or 4 wire). When configured for RS-485 4-wire, multiple RTU polling strings may be polled on each interface.

For other applications (point-to-point direct RS-232 links or Point-to-multiple point dialed links ) see the EtherPath single port serial server. The EtherPath uses TCP/IP.

A companion product, the EtherPoll is appropriate for applications using other protocols. The EtherPoll is protocol independent, and requires no knowledge of the RTU protocol. This allows it to work with any asynchronous byte-oriented protocol with no additional configuration. The EtherPoll uses UDP/IP. It's data sheet is here.

The EtherGate is another companion product that is protocol-aware. It enables serial SCADA devices to communicate via an Ethernet network. The EtherGate is ideal for transporting SCADA protocols via Ethernet. To transport SCADA protocols over Frame Relay circuits (without ethernet), use the DCB BPF Scada-FRAD.

General Specs

• Configuration Methods
  • Any Web Browser
  • Telnet Menu Interface
  • Direct Connection Menu Interface
• SNMP agent functionality included
• Two serial ports, DE-9 (commonly called a PC DB-9) DTE interface, individually configurable
• RS-485 two or for wire interfaces (with bus-mastering on the 4-wire)
• Serial speeds from 300 bps to 230,000 bps
• RJ45 10/100BaseT Ethernet, autoselected
• Set up via telnet command line interface, the serial port, or any web browser
• No Dip-switches... only one reset/setup button!

Indicators

Four LEDs indicate LAN and port status

Controls

Data Port

Interface:

ARC ELECTRONICS
301-924-7400 EXT 25

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