6. CONNECTION OF I/O UNITS TO
3) Mounting holes used for mounting with screws
Basic unit Extended unit
Mounting hole drilling diagram
When using both the basic and additional units, the spacing between the
mounting holes must be 70 to 80 mm, as shown in the figure above.
To mount and remove the unit, the screwdriver must be
inserted into the right and left areas obliquely. An adequate
maintenance area is, therefore, required on both sides of
As a rough guide, if the depth of the adjacent unit is equal
to or less than that of the unit to be mounted, leave a space
of about 20 mm between the units. If the depth of the
adjacent unit is greater than the unit to be mounted, leave
a space of about 70 mm between the units.
When mounting the unit near the side of the cabinet, leave
a space of about 70 mm between the unit and the side of the