Mitsubishi Electric MELSEC-Q Series User Manual page 31

2 SYSTEM CONFIGURATION
2
System configuration
Maximum number of
Extension Stages
Maximum number of
input/output modules to
be installed
Maximum number of
input/output points
Main base unit
Extension base unit
Extension cable
Notes
2 - 2
(2) Outline of system configuration
(a) System including extension base units
0 1 2 3 4
00 10
C
O
Extension
U P
T
cable
U
0F 1F
Extension base unit (Q68B)
Extension 1
5 6 7
50 60 70
O
I
U
N
T
5F 6F 7F
Extension base unit (Q65B)
Extension 2
13 14 15
D0 E0 F0
O
I U
N T
DF EF FF
Loading will cause error
Extension cable connector
Both of the above systems assume that each slot of the main and extension base units is
loaded with a 16-point module.
Q52B, Q55B, Q63B, Q65B, Q68B, Q612B
QC05B, QC06B, QC12B, QC30B, QC50B, QC100B
(1) Do not use an extension cable longer than an overall extension length of 13.2m(43.31ft.).
(2) 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.
(3) 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.
(4) The QA1S6 B/QA65B cannot be connected as an extension base unit.
(5) 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.
(6) If 17 or more modules are installed, an error will occur.
(7) When bus-connected, the GOT occupies one extension stage and one slot.
(8) The Q00JCPU processes the GOT as a 16-point intelligent function module. Hence, connection
of one GOT decreases the number of controllable points on base units by 16 points.
(9) The bus extension connector box (A9GT-QCNB) cannot be connected to the Q00JCPU. It
should be connected to the extension base unit.
(b) System including extension base unit and GOT
Slot number
20 30 40
Extension
cable
2F 3F 4F
Extension 1
8 9 10 11 12
80 90 A0 B0 C0
8F 9F AF BF CF
Two Extension Stages
16 modules
256
Unnecessary
MELSEC-Q
0 1 2 3 4
00 10 20 30 40
C
O
U P
T
U
0F 1F 2F 3F 4F
Extension base unit (Q68B)
5 6 7 8 9 10 11 12
50 60 70 80 90 A0 B0 C0
O
I
U
N T
5F 6F 7F 8F 9F AF BF CF
Number of extension units: 2
Slot No. : 0
2 - 2