Hitachi S10mini S Hardware Manual page 23

Mounting modules
When you mount I/O or option modules in the CPU or I/O unit, follow the following instructions to
avoid noise interference from connections external to the I/O unit:
Do not mount an I/O module rated at 100 VAC/VDC or higher in the slot next to the CPU
module, but mount it as remote from the CPU module as possible. If it is unavoidable to have
an I/O module mounted in the slot next to the CPU module, keep the cable connection as remote
possible (at least 100 mm) to guard against noise interference with such means as a shielded
cable or surge killer.
Mount an I/O module rated at 24 VDC or lower and an I/O module rated at 100 VAC/VDC or
higher well away from each other.
Leave one slot vacant between an analog counter module and an I/O module rated at 100
VAC/VDC or higher.
Wire each I/O module separately in accordance with each supply voltage used.
I/O module rated
CPU
at 24 VDC or
or
PS
lower
ST
Mount I/O modules
separately according to the
supply voltage.
Mount option modules in a group on the side of the CPU module, apart from the I/O module.
When mounting an option module and an I/O module rated at 100 VAC/VDC or higher, leave
one slot vacant between them.
Separate wiring for I/O modules and option modules.
Option
PS
CPU
Mount I/O modules and
option modules separately.
I/O module rated
at 100 VAC/VDC
or higher
I/O module rated
at 24 VDC or lower
- 5 -
Analog
CPU
counter
or
PS
module
ST
Leave one slot vacant
between an analog counter
module and an I/O module.
I/O module rated
at 100 VAC/VDC
Option
PS CPU
or higher
Leave one slot vacant between an
I/O module and an option module.
1 BEFORE USE
I/O module rated
at 100 VAC/VDC
or higher