User`s manual

Introduction
MELSEC System Q, Hardware 1 – 1
1 Introduction
This manual describes the following modules and units of the MELSEC System Q:
● CPU modules (→ Chapter 4),
● Memory cards (→ Chapter 5),
● Input and output modules (→ Chapter 6),
● Power supply modules (→ Chapter 7) and
● Base units (→ Chapter 8).
The manual comprises also detailed descriptions of:
● Installation (→ Chapter 9),
● Maintenance and Inspection (→ Chapter 10) and
● Troubleshooting (→ Chapter 11).
The MELSEC System Q is user-friendly and offers a wide range of communications facilities.
Chapter 3 of this manual describes examples, when using the CPU in independant systems.
The CPU can also be used in other system configurations (Data-Link systems or Computer-Link
systems). These systems are described in different manuals.
NOTES
For further information about programming of the programmable logic controllers refer to the
programming manual of MELSEC System Q and MELSEC A/Q series (Art. No. 87432).
For further information about application and operating of intelligent function function mod-
ules of MELSEC System Q refer to the User’s Manual of the modules.