5 - 2 5 - 2
MELSEC-Q
5 ASSIGNMENT OF I/O NUMBERS
5
5.2 Installing Extension Base Units and Setting the Number of Stages
There are two types of extension base units: Q5 B/Q6 B for mounting of Q-Series
modules and QA1S6 B and for mounting AnS Series modules.
(1) Connecting order of extension base units
When using both Q5 B/Q6 B and QA1S6 B, connect all Q5 B/Q6 B
modules closer to the main base unit, then connect QA1S6 B modules.
(2) Setting order of the stage numbers for extension base units
Extension base units require the setting of the extension stage numbers (1 to 7)
using the stage No. setting connector.
Assign the extension stage numbers starting from 1 to 7 to the extension base
units in the connected order starting from the one connected to the main base
unit.
(3) Cautions for assigning extension stage numbers to extension base
units
(a) Assign consecutive numbers to extension stages.
If you assign stage numbers to base units in "Auto" mode and assign some
stage numbers to no modules, "0" is assigned to the skipped stage as the
number of slots. Consequently, the number of empty slots does not
increase. The skipped stage is also assigned with "0" of I/O point.
(b) It is impossible to set and use the same extension stage number with two or
more extension base units.
(c) You cannot use the system if two or more connector pins are inserted to the
stage setting connector.
On the contrary, you cannot use the system if no connector pin is inserted
to the stage setting connector.
16 17 18 19 20 21 22 23
Setting of extension
stage
0 1 2 3 4 5 6 7
Q38B
8 9 10 11 12 13 14 15
Q68B
QA1S68B
QA1S68B
1
2
3
24 25 26 27 28 29 30 31
Main base unit
Extension base unit for mounting module
corresponding to the Q Series
(Q5 B/Q6 B is connected to
the main base unit or Q5 B/Q6 B.)
Extension base unit for mounting module
corresponding to the AnS Series
(QA1S6 B is connected to the end of
Q5 B/Q6 B or QA1S6 B.)
Stage setting
connector
Po
we
r su
p
p
ly
Po
we
r su
p
p
ly
Po
we
r su
p
p
ly
Po
we
r su
p
p
ly
QC
P
U
Содержание QCPU (Q Mode)
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