User`s manual

Part names and settings Base units
MELSEC System Q, Hardware 8 – 9
8.3.2 Setting the extension stage number
When using two or more extension base units, the extension stage number must be set with their
extension stage number setting connectors. The extension stage number is set to 1 by factory
default. There is no need to set the extension stage number, when only one extension base unit
with factory default status is connected to the main base unit.
The extension stage number setting connector of the extension base unit is located under the
IN side base cover.
Setting of connector pins for extension bases:
QH00011C
Fig. 8-6: Setting the extension stage number
Number setting for extension stages
1 2 3 4 5 6 7
Setting of
connector
pins
Tab. 8-8: Settings of connector pins
Fig. 8-7: Base cover removal procedure
Loosen the upper and lower screws in the IN side base cover and remove the
base cover from the extension base unit.
Insert the connector pin in the required extension stage
number location of the connector (see below).
After setting install the base cover to the extension base unit and tighten the base cover screw.