VLinx ESR902D Ethernet Serial Server RS-232/422/485


VLinx ESR902D Ethernet Serial Server RS-232/422/485

Industrial and commercial measurement and control systems often have stand-alone devices with unused serial ports. Advantech BB-ESRx Serial Servers allow you to connect those ports to your existing LAN or WAN, giving you access to more information and the ability to configure, manage and troubleshoot those devices from a control room, office or distant location via a WAN. Save the cost, time and trouble of carrying a laptop out to devices located in distant, dirty or uncomfortable environments.

BB-ESRx Serial Servers are built for industrial environments, featuring an IP30, slim line, DIN rail mountable case. They operate from a range of voltages using AC or DC power, feature terminal block power connectors and even support redundant DC power. An external power source is required (not included, sold separately).

Connect a serial device to the BB-ESRx serial port and connect the BB-ESRx to your LAN. Your networked computer ‘sees’ the device over the network as a virtual serial connection. BB-ESRx serial servers support TCP or UDP protocols and allow Transmit-to and Receive-from multiple IP addresses. There are four methods of configuration: Vlinx Management Software, Web Server, Telnet, or a direct RS-232 console connection using a terminal program.

Vlinx™ Manager software allows easy access to the serial server to configure the server and its ports, upgrade firmware and monitor port status and activity. When the Vlinx Manager opens, it searches for and displays all serial servers on the network.The Monitor Port feature allows you to use any PC on the LAN/WAN to actively view and troubleshoot communications status. It shows when there is a client connection to the server and the client IP address. It displays the number of bytes transmitted and
received, as well as the status of the hardware handshaking lines.

BB-ESRx serial servers can be accessed and configured from any web browser on the LAN/WAN allowing you to remotely manage the software and your serial device and do off-site troubleshooting.

Vlinx Serial Servers provide automatic resumption of the TCP data connection in case of a power failure or loss of an Ethernet connection on either the client or server. Once the Heartbeat connection is established, the server sends a signal to the client every five seconds until communication is re-established. Without this feature, a device that loses a connection and stops communicating would not be able to reconnect without a person physically attending to the problem. The Heartbeat feature works with virtual COM and TCP direct IP connections.

• Ethernet enable 1, 2 or 4 serial ports
• Data rate: 110 to 230.4 kbps
• Wide operating temperature range: -10 to +80 °C
• IP30 DIN rail mount case
• RS-232/422/485 full-duplex and half-duplex
• Auto detects 10/100 Mbps Ethernet
• External power source required (not included, sold separately)

BB-ESR901 1 DB9 or Terminal Block (1) Copper RJ45
BB-ESR902 2 DB9 (1) Copper RJ45
BB-ESR904 4 DB9 (1) Copper RJ45

Accessories – Sold Separately
BB-MDR-40-12 – Power Supply, 12 Vdc, 40 W, 3.33 A, DIN rail mount, plastic

Serial Technology
Note: refer to user manual for detailed information on pin-outs and signals.
Serial Interfaces RS-232 (DTE), RS-422, RS-485 (2-wire / 4-wire)

Serial Connectors
BB-ESR901: TB and DB9 M (selectable)
BB-ESR902: 2x DB9 M
BB-ESR904: 4x DB9 M

Baud Rate 110 to 230.4 Kbps
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Serial Buffer 8 Kb per port

Ethernet Technology
Connector RJ45 F
Data Rate 10/100 Mbps auto-detecting 10BaseT or 1000BaseTx
Protocols TCP, IP, ARP, DHCP, Telnet, HTTP, UDP, ICMP

Console RS-232 w/ VT100 Emulation
Telnet HyperTerminal w/VT100 Emulation
™ Manager Windows 7, 10
HTTP Embedded web page

Source External power supply (not included, sold separately)
Voltage 9 to 48 Vdc, or 8 to 24 Vac
BB-ESR901: 320 mA @ 12 Vdc
BB-ESR902: 340 mA @ 12 Vdc
BB-ESR904: 326 mA @ 12 Vdc

Connector Removeable terminal block (12 to 28 AWG)

Operating Temperature -10 to +80 °C
Storage Temperature -20 to +85 °C
Operating Humidity 5 to 95%, non-condensing

Enclosure IP30
Dimensions BB-ESR901/902: 4.46 x 15.52 x 10.46 cm
BB-ESR904: 4.46 x 18.03 x 10.46 cm

Meantime Between Failures (MTBF)
MTBF BB-ESR904 = 96827.27 hours

Calculation Method MIL217F Parts Count Reliability Prediction
Regulatory – Approvals / Standards / Directives
EU Declaraction of Conformity - Directives
2014/30/EU Electromagnetic Compatibility Directive
2011/65/EU amended by (EU) 2015/863 Reduction of
Hazardous Substances Directive (RoHS-10)
2012/19/EU Waste Electrical and Electronic Equipment (WEEE)
EU Declaraction of Conformity - Standards

EN 55032:2015 Class B Electromagnetic compatibility ofmultimedia equipment – Emission requirements
EN 55024:2010 Information Technology Equipment –Immunity
Characteristics – Limits and methods of measurement