Mitsubishi Electric Melsec-Q172DCPU User Manual page 89

2 SYSTEM CONFIGURATION
5)
OUT
1)
2)
POWER
No. Name
Extension cable
1)
connector
2) Base cover
3) Module connector
4) Module fixing screw hole Screw hole for fixing the module to the base unit. Screw size: M3 12
5) Base mounting hole
(Note): It is impossible to mount the main base unit by DIN rail when using the Motion CPU module. Doing so could result in
vibration that may cause erroneous operation.
(3) Names of parts of the base unit
Names of parts of the base unit are described below.
(a) Main base unit (Q35DB, Q38DB, Q312DB)
4)
CPU I/O0 I/O1
Connector for connecting an extension cable (for signal communications with the
extension base unit)
Protective cover of extension cable connector. Before an extension cable is connected,
the area of the base cover surrounded by the groove under the word "OUT" on the base
cover must be removed with a tool such as nippers.
Connector for installing the Q series power supply module, CPU module, Motion module,
I/O modules, and intelligent function module.
To the connectors located in the spare space where these modules are not installed,
attach the supplied connector cover or the blank cover module (QG60) to prevent entry of
dirt.
Hole for mounting this base unit onto the panel of the control panel (for M4 screw)
I/O4 I/O5 I/O6
I/O2 I/O3
3)
Application
2 - 56
I/O7 I/O8 I/O9 I/O10
I/O11
I / O11
Q312DB