Sel 751A - Conventions; Typographic Conventions

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SEL-751A Relay Instruction Manual Date Code 20100129
Preface
Conventions
Appendix D: DNP3 Communications. Describes the DNP3 protocol support
provided by the SEL-751A.
Appendix E: Modbus RTU Communications. Describes the Modbus
®
protocol support provided by the SEL-751A.
Appendix F: IEC 61850 Communications. Describes IEC 61850
implementation in the SEL-751A.
Appendix G: DeviceNet Communications. Describes the use of DeviceNet
(data-link and application protocol) over CAN (hardware protocol).
Appendix H: Synchrophasors. Describes the Phasor Measurement Control
Unit (PMCU), and accessing Synchrophasor data via ASCII
Command (MET PM) and IEEE C37.118 Protocol.
Appendix I: MIRRORED BITS Communications. Describes how SEL protective
relays and other devices can directly exchange information quietly,
securely, and with minimum cost.
Appendix J: Relay Word Bits. Lists and describes the Relay Word bits
(outputs of protection and control elements).
Appendix K: Analog Quantities. Lists and describes the Analog Quantities
(outputs of analog elements).
SEL-751A Relay Command Summary. Briefly describes the serial port
commands that are fully described in Section 7: Communications.
Conventions
Typographic
Conventions
There are many ways to communicate with the SEL-751A. The three primary
methods are:
➤ Using a command line interface on a PC terminal emulation
window.
➤ Using the front-panel menus and pushbuttons.
➤ Using ACSELERATOR QuickSet.
The instructions in this manual indicate these options with specific font and
formatting attributes. The following table lists these conventions.
Typographic Conventions
Example Description
STATUS Commands typed at a command line interface on a PC.
<Enter> Single keystroke on a PC keyboard.
<Ctrl+D> Multiple/combination keystroke on a PC keyboard.
Start > Settings PC dialog boxes and menu selections.
The > character indicates submenus.
{CLOSE} Relay front-panel pushbuttons.
ENABLE Relay front- or rear-panel labels.
Main > Meters Relay front-panel LCD menus and relay responses.
The > character indicates submenus.