Mitsubishi Electric Q12DCCPU-V - Precautions for Extension Stage Number Setting; Extension Stage Number Setting Order

7
I/O NUMBER ASSIGNMENT
7.2 Connecting Extension Base Units and Setting the Number of Stages
7 - 4
1
OVERVIEW
2
SYSTEM CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
ACCESS VIA NETWORK MODULES
6
PREPARATORY PROCEDURES AND SETTING
7
I/O NUMBER ASSIGNMENT
8
MEMORIES AND FILES
(2) Precautions for extension stage number setting
(a) Extension stage number setting order
The extension stage numbers must be set consecutively.
Even if any extension stage number is skipped when the Auto mode is active for
base unit assignment ( Page 7-7, Section 7.3 (1)), 0 slot is assigned to the
skipped stage and the number of available slots does not increase.
Figure 7.3 Number of slots when extension stage number is skipped
CPU 0 1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19
00000000
20 21 22 23 24 25 26 27
Q312B
Q68B
Q68B
Q68B
Extension 1
Main base unit
Slot number
Extension 2
Extension 3
Extension base unit
Skipped
stage number
Power supply
module
C Controller module