Introduction

Two Serial Servers are connected to a network, one configured as a TCP or UDP client and the other as a TCP/UDP server. When setting up the server the remote IP address section must contain the address of the client. This will allow the client’s IP address to pass the IP address-filtering feature of the server. Conversely, the Remote IP address of the client must contain the server’s IP address. Both communication port numbers must be the same.

Heart Beat

The Heart Beat protocol connection provides a reliable communications connection in Virtual COM Port Mode or with Paired Connection Mode. This feature restores the connection if communications are temporarily lost at either end due to loss of power or Ethernet connection.

Without this feature a device that loses a connection and stops communicating would not be able to reconnect without human intervention. A TCP data connection can be lost when there is a power failure or temporary loss of an Ethernet connection on either the client or server. If a loss occurs the Heart Beat feature will try to reconnect the TCP data connection every five seconds until communications is established again. The Heart Beat feature is available for use in Virtual COM Port Mode and Paired Connection Mode. This is not available when using a UDP application.

4

Chapter 1

Manual Documentation Number: ESR90x-0508m

 

B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax

815-433-5104www.bb-elec.com

 

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444

– Fax +353 91-792445www.bb-europe.com

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B&B Electronics ESR902, ESR904, ESR901 manual Heart Beat

ESR902, ESR901, ESR904 specifications

B&B Electronics, a renowned name in industrial networking, has developed a series of robust and reliable products, including the ESR904, ESR901, and ESR902. These devices are integral components designed primarily for serial-to-Ethernet conversion, enhancing data communication across various applications.

The ESR904 is a versatile serial server that supports four serial ports. It effectively enables communication between serial devices and Ethernet networks, facilitating the integration of legacy devices into modern IT environments. With a built-in web server, the ESR904 allows users to manage configuration settings conveniently from a web browser. It supports various networking protocols, including TCP/IP, UDP, and HTTP, ensuring seamless connectivity. Additionally, the device features baud rate settings that can be configured per port, accommodating a wide range of serial devices.

The ESR901 is specifically tailored for single-port serial applications. It provides a straightforward solution for converting RS-232/422/485 serial connections to Ethernet. This simplicity does not compromise functionality, as the ESR901 supports a variety of protocols, including telnet for remote access, making it suitable for diverse networking environments. Its compact design and ease of installation make it an ideal choice for those looking to integrate serial devices without extensive modifications to existing setups.

The ESR902 offers dual-port functionality, allowing it to connect two serial devices to an Ethernet network simultaneously. This dual capability is particularly beneficial for applications that require multiple devices to communicate over a single network connection. Like its counterparts, the ESR902 supports various communication protocols and provides secure data transmission. Moreover, it features diagnostic tools that assist networking professionals in troubleshooting any connectivity issues that may arise.

All three models incorporate features such as flexible mounting options, power over Ethernet (PoE) support, and ruggedized designs to withstand industrial environments. They are designed to operate reliably in harsh conditions, featuring wide temperature ranges and robust housings. B&B Electronics emphasizes security with options for SSH/SSL encryption, ensuring that sensitive data remains protected during transmission.

In summary, the ESR904, ESR901, and ESR902 by B&B Electronics represent valuable solutions for integrating legacy serial devices into Ethernet networks. With their robust feature sets, flexible configurations, and reliable performance, they cater to a diverse range of industries, enhancing connectivity and improving overall operational efficiency.