Black Box LES431A, Modbus Hardened Serial Server manual Appendix C Glossary, Appendix C. Glossary

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Appendix C: Glossary

Appendix C. Glossary

ADU—Application Data Unit.

ASCII—American Standard Code for Information Interchange.

Baud Rate—Number of bits per second.

CRC—Cyclical Redundancy Checking.

Data Bits—Number of bits per byte, normally 7 with Modbus ASCII, and 8 with Modbus RTU.

DHCP—Dynamic Host Configuration Protocol.

Flow Control—The process of managing the rate of data transmission between two nodes.

Function Code—A code field that tells the Modbus Hardened Serial Server what kind of action to perform. GUI—Graphical User Interface.

IP—Internet Protocol.

IPv4—Internet Protocol version 4.

LED—Light emitting diode. Used as a visual indicator.

LES431A—Modbus Hardened Serial Server, RS-232/RS-422/485 on serial port.

MBAP—MODBUS Application Protocol.

MEI—Multi Electrical Interface via RS-232/422/485.

Modbus—A request/reply protocol that offers services specified by function codes.

Modbus Gateway — A bridge to get from Modbus TCP to Modbus Serial.

Parity Bit—A binary digit that is added to ensure that the number of bits with value of one in a given set of bits is always even or odd. It may also be a Mark (1), or a Space (0).

PDU—Protocol Data Unit.

RS-232—Interface between data terminal equipment and data circuit-terminating equipment employing serial binary data interchange.

RS-422—Electrical characteristics of generators and receivers for use in balanced digital point-to-point systems. RS-485—Electrical characteristics of generators and receivers for use in balanced digital multipoint systems. RTU—Remote Terminal Unit.

Stop Bit—Number of bit times after a character is transmitted before the next character can start transmission. TCP—Transmission Control Protocol

Unit ID—Unit Identifier. This is the same as the slave’s address.

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Contents Modbus Hardened Serial Server Trademarks Used in this Manual Trademarks Used in this ManualFCC and IC RFI Statements NOM Statement Table of Contents Specifications SpecificationsSpecifications Dimensional Diagrams Features OverviewOverview Introduction What‘s IncludedLES431A front and back panels Modbus Hardened Serial Server Configuration Software LES431A componentsInstallation and Initial Setup Installation and Initial Setup Connecting the Power Supply1 RS-232 2 RS-422Connecting Modbus Hardened Serial Servers to a Network Modbus Hardened Serial Server Configuration ConnectionsModbus License Acceptance Screen Installation and Initial Setup Software Installing screen 10. Installation Complete screen Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup See the General Settings screen in Figure Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup Installation and Initial Setup 29. Type IP Address 31. Web properties screen Installation and Initial Setup Null-modem Cable Modbus Hardened Serial Server LES431A 35. Serial Port Selection Reloading Factory Defaults 36. Direct IP ConnectionDownloading Firmware Files Upgrading the Modbus Hardened Serial Server FirmwareUpgrading the Modbus Hardened Serial Server Firmware Uploading the Firmware to the Modbus Hardened Serial Server Testing a Modbus Hardened Serial Server Connection DiagnosticsDiagnostics Testing a Modbus Hardened Serial Server connection Ethernet Master and Serial Slaves Application ExamplesApplication Examples Application Examples Application Examples Modbus ID routing Modbus priority Serial and Ethernet Masters, Serial and Ethernet Slaves Port 1 ModbusModbus Slave ID routing Serial Masters, IP Slaves 11. Port 1 Serial12. Port 1 Modbus Identical Hard-Coded Slaves Identical Production LinesHints and Tips Modbus HelpModbus Help Modbus ASCII/RTU Basics Appendix a Default Modbus Hardened Serial Server Settings Appendix A. Default Modbus Hardened Serial Server SettingsTerminal Block Appendix B Connector PinoutsAppendix B. Connector Pinouts DB9 M Connector Standard Ethernet Cable RJ-45 Pinout Appendix C Glossary Appendix C. GlossaryBlackbox.com Blackbox.com Blackbox.com Black Box Tech Support FREE! Live /7