Connection Method For The Extension Base Unit; When Melsec-Q Series Modules Are Used - Mitsubishi Electric MELSEC iQ-R Series Configuration Manual

5.5

Connection Method for the Extension Base Unit

Up to seven base units can be extended including the extension base unit, RQ extension base unit, and MELSEC-Q series
extension base unit.
Use an extension cable for the connection with the extension base unit.
Connect the extension cable to the connector of the base unit in order of OUTIN. Do not connect the extension cable to the
connector in order of ININ, OUTOUT, or INOUT.
OUT
Main base unit
IN OUT
Extension base unit
IN OUT
Extension base unit
The extension level setting for the extension base unit and RQ extension base unit is not required, because the extension
level is set automatically in order near from the main base unit. The setting cannot be changed arbitrarily.

When MELSEC-Q series modules are used

This section describes the connection between the RQ extension base unit and MELSEC-Q series extension base unit.
The RQ extension base unit is connected to the lower level of the main base unit or MELSEC iQ-R series extension base unit
with a MELSEC iQ-R series extension cable.
• When the RQ extension base unit is connected to the lower level of the main
base unit
Main base unit
RQ extension base unit
When additional MELSEC-Q series modules are mounted, the MELSEC-Q series extension base unit is connected to the
lower level of the RQ extension base unit with a MELSEC-Q series extension cable.
• When the RQ extension base unit is connected to the lower level of the main
base unit
Main base unit
RQ extension base unit
Extension base unit
for MELSEC-Q series
The dot lines show the MELSEC-Q series extension cables.
For the MELSEC-Q series extension base unit that can be used in the MELSEC iQ-R series system, refer to
the following.
Page 47 MELSEC-Q series
• When the RQ extension base unit is connected to the lower level of the
extension base unit
Main base unit
Extension base unit
RQ extension base unit
• When the RQ extension base unit is connected to the lower level of the
extension base unit
Main base unit
Extension base unit
RQ extension base unit
Extension base unit
for MELSEC-Q series
5 INSTALLATION AND WIRING
5.5 Connection Method for the Extension Base Unit
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