Omron NT Operation Manual page 5

About this Manual:
This manual describes the installation and operation of the NT-series RS-232C/RS422 Interface Unit 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 NT-series RS-232C/RS422 Interface Unit.
Section 1 describes the role and operation of the RS232C/RS422 Interface Unit, and its relationship to
the PT features and provides a command reference table.
Section 2 describes how to connect the RS-232C Interface Unit to the PT and the PT to the host com-
puter.
Section 3 describes how to set the RS-422 Interface Unit and how to connect the PT to the host computer.
Installation of the RS-422 Interface Unit in the PT and the PT DIP switch settings are identical to the
RS-232C Interface Unit.
Section 4 describes RS-232C/RS-422 Interface Unit communication procedures and how to use the
commands.
Section 5 describes the functions of the operating commands and how to use them. The operating com-
mands allows control of the PT by the host computer and notification of PT operations to the host com-
puter.
Section 6 describes the functions of the terminal commands and how to use them. Terminal commands
allow the display of information from the host computer as text and graphics, independently of the screens
stored in the PT.
Section 7 describes the functions of the online transfer commands to transfer screen and memory table
data between the host computer and PT. The commands cannot be used with PTs fitted with an EPROM
or EEPROM image memory.
Section 8 provides some sample programs using the Transfer commands. Refer to these sample pro-
grams for actual information on using the commands.
Section 9 describes the cause of errors and possible remedies.
This manual also contains four Appendices which provide information on communication specifications,
preparing RS-232C/RS422 Connector Cables, and connections using different cable types.
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.