About This Manual - Omron NT21 Reference Manual

About this Manual:

This manual describes the basic functions and operation procedures of the NT-series NT21, NT31,
NT31C, NT631, and NT631C Programmable Terminals, their operations when connected to a PC (Pro-
grammable Controller) or other host, and includes the sections described below.
Please read this manual carefully and be sure you understand the information provided before attempting
to install and operate the Programmable Terminal.
Section 1 describes the functions of the PT.
Section 2 gives basic information on the method for connecting to the host and communication methods,
and describes the names and functions of the parts of the PT.
Section 3 how to use the functions provided by the PT.
Section 4 gives an overview of memory link operations and contains explanations centered on commu-
nications between the PT and host when using memory link.
Section 5 presents a collection of simple practical examples that will give you hints on how to make best
use of the functions of the PT.
Section 6 describes the action to take when PT errors occur.
The Appendices provide the specifications, compatibility with screen data of other PT models, NT30/620
emulation mode, PC memory maps, and keycode tables.
WARNING
! Failure to read and understand the information provided in this manual may result in
personal injury or death, damage to the product, or product failure. Please read each
section in its entirety and be sure you understand the information provided in the section
and related sections before attempting any of the procedures or operations given.
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