2. Installation and Wiring
24
External wire connection
Connect external wires to the external wire terminal block from the left side of the terminal block
unit.
Module Mounting
Before mounting the PI/O modules and the communication modules, check the module model
names and settings. When replacing a unit, be sure to replace it with one of the same model and
use the same settings. This module is supports online replacement,but it is allowed assuming that
the system supports.Check if the system supports online maintenance of I/O.
NOTICE:
Do not mount a module that does not match on a terminal block unit or a
communication base unit.
If a non-matching module is forcibly mounted, it may damage to the terminal block unit or
communication base unit and the module. To avoid erroneously inserting the wrong module,
paste the correct name labels on the modules as explained in "Preparation for mounting the
terminal block units".
Use the correct size screwdriver to attach and remove the blank cover and the modules.
Otherwise it may damage to the blank cover and the modules.
Always mount blank cover on slots in which modules are not mounted.
Otherwise dirt may get in.
Removal of blank covers
When a PI/O module or communication module is to be mounted in a slot that is covered by a
blank cover, remove the blank cover with a slotted straight-edge screwdriver (Figure 2.14).
Figure 2.14 Blank cover removal
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