Mitsubishi MELSEC System Q User Manual

3 The MELSEC System Q
3 .1 System Configuration
The MELSEC System Q is a powerful modular PLC with multiprocessor technology . Modular
means that the configuration of the system can be adapted to an application individual and
optimal.
The heart of a PLC consists of a base unit, a power supply module und at least one CPU mod-
ule. The CPU executes the instructions in the PLC program. Depending on the application,
more modules – for example input and output modules (I/O modules) and special function
modules – can be installed to the base unit. The voltage for the installed modules is supplied
by the power supply module.
Communication between the individual modules and the CPU is performed via an internal bus
connection of the base unit.
The base unit on which the CPU is mounted is called the main base unit. The base units of the
MELSEC System Q are available in 5 different versions with up to 12 module slots.
Expandability
When more slots for modules are required, every main base unit can be complemented by
extension base units.The base units are simply connected to one another by extension cables.
If extension base units without a own power supply modules are used these cables also pro
-
vide the installed modules with the power. Up to 7 extension base units can be connected to a
main base unit. The total number of I/O and special function modules in all base units is 64.
MELSEC System Q Beginners Manual 3 – 1
The MELSEC System Q System Configuration
MITSUBISHI
2M
INSERT
FLASH
CARD
BA
MOD
SERIAL 0100017-A
SE UNIT
EL Q38B
0205020E
POWER
CPU
I/00
Q38B(N)
I/07
I/06
I/05
I/04
I/03
E.S.D
I/02
I/01
0
1
2
3
4
5
6
7
8
9
1
3
5
7
9
B
D
F
2
4
6
8
A
C
E
NC
24VDC
4mA
COM
Q
X
8
0
01234567
89ABC D E
F
Q06HCPU
RS-232
USB
PULL
MODE
RUN
ERR.
USER
BAT.
BOOT
EJECT
C
A
R
D
MODE
RUN
ERR.
USER
BAT.
BOOT.
ON
STOP RUN
RESET L.CLR
SW
1
2
3
4
5
MELSEC
Q61P-A2
PULL
MITSUBISHI
POWER
1
0BAS
E
-
T
/1
0
0
B
A
S
E
-
T
X
QJ71E71-100
QJ71E71-100
RUN
ERR.
INT.
COM ERR.
OPEN
SD
RD
100M
AX2
AX1
AX4
AX3
QD75P4
RUN AX1
AX2
AX3
AX4
ERR.
Power supply
module
CPU Module I/O Modules
Special function
Modules
Network Modules
Base unit
Memory card (optional)
Connector for
Extension base unit

Mitsubishi MELSEC System Q Specifications

General

Brand	Mitsubishi
Model	MELSEC System Q
Category	Controller
Language	English