Mitsubishi Electric MELSEC Q Series User Manual page 91

(2) Extension stage number setting
To use 2 or more extension base units, it is necessary to set the extension base number by the extension base
number setting connector on the extension base unit.
When a C controller module is used, extension base number can be up to 7.
Base number setting
connector
IN OUT
Base number
setting
connector
For details of base number setting procedures, refer to the following.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
● Set extension base numbers in the order of connection, starting from the extension base unit connected to the main base
unit.
● Set correct extension base number for the base number setting connector. Do not set the same extension base number
for two or more extension base units and do not skip extension base number setting. Doing so may cause incorrect input
or incorrect output.
● If an extension stage number is skipped, it will not be reserved as the number for an empty base unit. To reserve an
extension stage, perform the base unit setting in the <<I/O assignment settings>> of parameter.
Page 303, Section 16.3
Extension stage number setting
Stage 1 Stage 2 Stage 3
CHAPTER 7 SYSTEM CONFIGURATION
Stage 4 Stage 5 Stage 6 Stage 7
7
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