B&B Electronics RS-232, RS-485 Flow Control, TCP/UDP Protocol, Serial Timeout, TCP Alive Timeout

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Server Properties Configuration

Flow Control

The Flow Control setting must match the requirements of the serial device connected.

Note:

Select None when setting the port as RS-485 or 4-wire RS-422.

TCP/UDP Protocol

Select TCP (Transmission Control Protocol) or UDP (User Datagram Protocol) protocol. If the application does not require a UDP connection, select TCP. TCP guarantees reliable communication with error checking whereas UDP provides faster transmission.

UDP Mode

When UDP mode is chosen the Serial timeout, TCP alive timeout, Connection mode, Connection at, Max connection and Remote IP address fields are replaced with the following four fields: Destination IP address range, Port number and Source IP address range. In this mode the server can be configured to broadcast data to and receive data from multiple IP addresses. Four IP address range fields are provided.

Figure 32. The Server UDP Configuration Screen

Serial Timeout

Default for the Timeout property is 0, or no timeout. Setting Timeout to any value between 1 and 65535 seconds activates it. If Timeout is set to 5 seconds and the Serial Server is configured as a Server, the Client makes a connection and communications starts. If

Manual Documentation Number: ESP901-902_4105m

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Server Properties Configuration

communications are ideal for 5 seconds the Serial Server will reset and make itself available for another client connection.

TCP Alive Timeout

The Serial Server monitors TCP activity. If TCP activity stops for the length of time specified in this field the connection will be closed. This field can be set to any value between 0 and 255 minutes. If zero, or no value, is entered into this field the server will not disconnect.

Connection Mode

The Connection Mode field has three options: Server, Client and Client (no heartbeat). When Client or Client (no heartbeat) is selected the Connection at field automatically becomes active (allowing the user to select Power up or Data Arrival).

•When using the Virtual COM Port feature, select Server.

•When using a TCP or UDP Socket program, select Server.

•When using Paired Mode communication between two serial servers set up one as a Client and the other as a Server.

•When connecting to a server that does not support Heartbeat, select Client (no Heartbeat).

Delimiter HEX 1 and Delimiter HEX 2

These fields allow the user to enter two ASCII characters (in hex format) that delimit the beginning and end of a message. When a message with both these delimiters is received at the serial port, the data contained in the serial buffer is placed in an Ethernet packet and sent out the Ethernet port. If only Delimiter 1 is set (Delimiter 2 is zero or blank), upon receiving Delimiter 1 the ESP901/902 will put all the data in the serial buffer in an Ethernet packet and send it out the Ethernet port. If serial data greater than 1 kilobyte is received it will automatically be placed in an Ethernet packet and sent out the Ethernet port .

Force Transmit

This field allows the user to set a maximum time limit between transmissions of data. The value set in this field multiplied by 100 ms determines the Force Transmit time. When the elapsed time reaches the time configured in this field, the TCP/IP protocol will pack the data currently in the serial buffer into a packet and send it out the Ethernet port.

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Chapter 5

Manual Documentation Number: ESP901-902_4105m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

– www.bb-elec.com

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

– www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445

– www.bb-europe.com

B&B Electronics Ltd – Westlink Commercial Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445

– www.bb-europe.com

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Contents Multi-Interface Ethernet Serial Servers Manual Documentation Number ESP901-9024105m Table of Contents Using Console Mode Features IntroductionPaired Mode Direct IP ModeVirtual COM Mode Communication ModesSerial Server Configuration Hardware SetupSoftware Installation Serial Server Quick Start GuideInstall Virtual COM Ports on PC Check CommunicationsESP901/ESP902 Connections, Indicators and Reset Switch Package ChecklistMaking the Hardware Connections Serial Server/Port Operational Modes DIP SwitchesSerial Ports RS-232 Mode Console ModeUpgrade Mode RS-422 ModeSerial Server Serial Port Connector Pin-outs DTEAutomatic Installation Installing the Vlinx ESP SoftwareSoftware Installation Manual InstallationUpdating an Existing Installation Opening the ESP ManagerHardware Setup Using ESP ManagerSoftware Setup Software Overview MenusSerial Server / Virtual COM Lists Search for ServersServer Icons Pane Status BarConfigure Server Properties Search Vlinx ESP Dialogue BoxRestarting Dialogue Box Description of the Server Properties Configuring the Serial Server PropertiesPassword Server NameGateway IP AddressNetmask MAC AddressConnection Mode Serial TimeoutTCP Alive Timeout Flow ControlPort Status Serial Port ModeUpdate/Save TCP/UDP PortFollowing dialogue box will appear Web Server Installing Virtual COM Ports Virtual COM Port InstallationMatching the Serial Server and Virtual COM Port Settings Windows Logo Testing WindowVlinx ESP COM3 Properties Window Removing Virtual COM Ports Removing the Virtual COM Port using Device ManagerRemoving the Virtual COM port with ESP Manager Control Panel Window Upgrading Via ESP Manager Upgrading the Serial Server FirmwareDownloading the Firmware Preparing the SoftwareConsole Mode Setup Using Console ModeNavigating the Configuration Menus Using a Password Saving and Restarting the ConfigurationUsing the WEB Server Setting Server PropertiesWeb Server Operation Configuration Using Telnet Using TelnetNavigating the Configuration Menu Telnet Configuration Screens Technical Data ESP901 and ESP902Dhcp RS-232 Straight-through Cable Connections Serial Server DB-9 Pin-outs in RS-232 ModeRS-232 Crossover null modem Cable Connections RS-232 Crossover DB-9 to DB-25 Conversion Connections RS-232 DTE Loopback ConnectionsSerial Server DB-9 Pin-outs in RS-422 Mode Appendix B RS-422 ConnectionsLoopback Connections for RS-422 Serial Server DB-9 Pin-out in RS-485 Mode Appendix C RS-485 ConnectionsStandard Ethernet Cable RJ-45 Pin-out Crossover Ethernet Cable RJ-45 Pin-outElectronics October
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RS-422, RS-232, RS-485, Multi-Interface Ethernet Serial Servers specifications

B&B Electronics is renowned for its reliable and efficient solutions for industrial communication, and their Multi-Interface Ethernet Serial Servers stand out as versatile tools for connecting legacy serial devices to modern Ethernet networks. The compatibility with various serial communication protocols, including RS-485, RS-232, and RS-422, makes these servers indispensable in numerous applications that require reliable data transfer.

One of the main features of B&B Electronics Multi-Interface Serial Servers is their ability to support multiple serial communication standards. This flexibility allows businesses to integrate older equipment with newer technologies seamlessly. The servers can act as a bridge, ensuring that data from RS-232 devices can be transmitted over Ethernet networks without modification.

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The serial servers also incorporate advanced technologies such as TCP/IP and UDP protocols, enhancing data transmission reliability. This ensures that even in instances of network interruptions, data is not lost, thus maintaining the integrity of information being communicated between devices.

In summary, B&B Electronics Multi-Interface Ethernet Serial Servers serve as a crucial link between legacy serial devices and modern Ethernet networks. Their flexibility, robust design, and user-friendly features make them a preferred solution for industries looking to improve their communications infrastructure and streamline their operations. With the integration of cutting-edge technologies, these servers not only meet the current demands but also adapt to future advancements in network communications.
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