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About this Manual:
This manual describes connecting the NT-series NT631 and NT631C Programmable Terminals (PTs)
to a PLC (Programmable Controller) or other host and peripheral devices, and the settings required for
communications and applications. It 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 provides fundamental information about the functions and features of the PTs, types of con-
nection, communications methods, etc. This information will enable you to understand the applications
of the PTs.
Section 2 describes the connection methods that are possible with the PTs, and the functions of the
parts of PTs, as the required knowledge before connecting to the host and to the peripheral devices.
Section 3 describes the settings of the PTs and methods for connection to peripheral devices.
Section 4 describes the method for connecting to the host using the RS-232C port of the PT.
Section 5 describes the method for connecting to the host using the RS-422A/485 port of the PT.
Section 6 describes the operation of the System Menu, focusing on the procedure to start the PT.
Functions that are convenient when using the PT and those that are useful for system maintenance
are also explained here.
Section 7 describes the action to take when errors occur in the PT, and how to carry out maintenance
and inspection to prevent the occurrence of errors.
The Appendices provide specifications, dimensions, procedures for using an RS-232C/RS-422A
Adapter, procedures for transporting and storing the PT, information on cable preparation, information
on the relationship between the system program and hardware, and product lists.
!WARNING Failure to read and understand the information provided in this manual may result in per-
sonal 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.