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SEL-734 Meter Instruction Manual Date Code 20090730
Preface
Conventions
Section 10: Communications. This section describes serial port connector pinout/terminal
functions, communications cables, communications protocol, serial port commands,
and Ethernet port commands.
Section 11: Front-Panel Operation. This section describes the front-panel operation of
pushbuttons and correspondence to serial port commands and rotating displays.
Section 12: Testing and Troubleshooting. This section describes the general testing
philosophy, methods, and tools, as well as meter self-tests and troubleshooting.
Appendix A: Firmware and Manual Versions. This appendix lists the present meter
firmware version and details differences among the present and previous versions.
Provides a record of changes made to the instruction manual since the initial release.
Appendix B: SEL Distributed Port Switch Protocol (LMD). This appendix describes how to
perform settings and operation of the LMD to permit multiple SEL meters to share a
common communications channel.
Appendix C: SEL Communications Processors. This appendix describes how SEL
communications processors and PC software use SEL protocols optimized for
performance and reliability.
Appendix D: Setting SELOGIC Control Equations. This appendix describes how to set the
control elements (Meter Word bits) in the SEL
OGIC control equations.
Appendix E: Distributed Network Protocol. This appendix describes DNP and includes
the DNP Port Settings Sheets.
Appendix F: Modbus RTU Communications Protocol. This appendix describes Modbus
®
RTU communications features supported by the SEL-734 Meter communications
port.
Appendix G: MIRRORED BITS Communications. This appendix contains a summary of
M
IRRORED BITS
®
settings and describes how MIRRORED BITS function with the
SEL-734.
Appendix H: Analog Quantities. This appendix contains a summary of analog quantities
available for use in load profile, displaying points, etc.
SEL-734 Meter Command Summary. This section briefly describes the serial port
commands that are described in detail in Section 10: Communications.
Conventions
Typographic Conventions
There are three ways to communicate with the SEL-734:
➤ Using ACSELERATOR QuickSet Software.
➤ Using a command line interface on a PC terminal emulation window.
➤ Using the front-panel menus and pushbuttons.
The instructions in this manual indicate these options with specific font and formatting
attributes. The following table lists these conventions.
Courtesy of NationalSwitchgear.com
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