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MELSEC-Q
2 SYSTEM CONFIGURATION FOR SINGLE CPU SYSTEM
(3) Outline of system configuration
(a) If the main base unit (Q3
B) is used
System configuration
3rd extension
stage
4th extension
stage
2nd extension
stage
00
1F
20
3F
40
5F
60
7F
80
9F
A0
BF
C0
DF
E0
FF
100
11F
120
13F
140
15F
160
17F
01234567891011
23
Extension base unit(Q612B)
2221201918171615141312
2A0
2BF
2C0
2DF
2E0
2FF
280
29F
260
27F
240
25F
220
23F
200
21F
1E0
1FF
1C0
1DF
180
19F
1A0
1BF
3130292827262524
3E0
3FF
3C0
3DF
3A0
3BF
380
39F
360
37F
340
35F
320
33F
300
31F
3938373635343332
4E0
4FF
4C0
4DF
4A0
4BF
480
49F
460
47F
440
45F
420
43F
400
41F
4443424140
580
59F
560
57F
540
55F
520
53F
500
51F
5251504948474645
680
69F
660
67F
640
65F
620
63F
600
61F
5E0
5FF
5C0
5DF
5A0
5BF
6059585756555453
780
79F
760
77F
740
75F
720
73F
700
71F
6E0
6FF
6C0
6DF
6A0
6BF
636261
7E0
7FF
7C0
7DF
7A0
7BF
Extension
cable
Slot No.
The figure shows the configuration
when 32-I/O modules are
loaded to each slot.
O
U
T
I
N
O
U
T
When module is installed,
an error occurs.
1st extension
stage
5th extension
stage
6th extension
stage
7th extension
stage
Main base unit(Q312B)
Power supply module
O
U
T
I
N
O
U
T
I
N
O
U
T
I
N
O
U
T
I
N
O
U
T
I
N
O
U
T
I
N
Prohibit
Prohibit
Power supply module
Extension base unit(Q68B)
Power supply module
Extension base unit(Q68B)
Power supply module
Extension base unit(Q65B)
Power supply module
Extension base unit(QA1S65B)
Power supply module
Extension base unit(QA1S68B)
Power supply module
Extension base unit(QA1S68B)
Power supply module
CPU module
Maximum number of
Extension Stages
Seven Extension Stages
Maximum number of
I/O modules to be
installed
64 modules
Maximum number of
occupied I/O points
4096
Main base unit Q33B, Q35B, Q38B, Q312B
Extension base unit Q52B, Q55B, Q63B, Q65B, Q68B, Q612B, QA1S65B, QA1S68B
Extension cable QC05B, QC06B, QC12B, QC30B, QC50B, QC100B
Notes
(1) Extension bases unit of up to seven stages can be used.
(2) Do not use extension cable longer than an overall extension length of 13.2m(43.31ft.).
(3) When using an extension cable, do not bind it together with the main circuit (high voltage and
heavy current) line or do not lay down them closely to each other.
(4) When setting the No. of the expansion stages, set it in the ascending order so that the same
No. is not set simultaneously by two extension base units.
(5) When Q5
B, Q6 B and QA1S6 B types of extension base units are mixed, first connect the
Q5 B, Q6 B type and then connect the QA1S6 B type.
When setting the No. of the extension stages, set it from Q5
B/Q6 B in order.
Although there are no particular restrictions in the order of the installation of the Q5
B and
Q6 B, refer to Section 6.6 for usability.
(6) Connect the extension cable from OUT of the extension cable connector of the base unit to IN
of the extension base unit on the next stage.
(7) If 65 or more modules are installed, an error will occur.
(8) When the GOT is bus-connected, it occupies one extension stage and one slot.
(9) The High Performance model QCPU processes the GOT as a 16-point intelligent function
module. Hence, connecting one GOT decreases 16 points available for the base unit.
(10) Q61SP cannot be used for the power supply module.
Use Q61P-A1, Q61P-A2, Q62P, or Q64P for the power supply module.