2
0
1
8
-1
2
34
Installation
Figure 3.4
Bent connector pins
Figure 3.5
Damaged pins with nicks or scratches
Fixed slots are reserved on the backplane for com units, bus termination modules, and power
supplies. Com units are equipped with mechanical coding pins on the underside of the
enclosure to prevent these modules from being accidentally plugged into the slot of an I/O
module.
Slots for I/O modules have equal status, meaning functions can be arranged side by side as
required. I/O modules with intrinsically safe circuits and I/O modules with non-intrinsically safe
circuits can also be arranged side by side.
Unused slots can be left empty or fitted with place-holder module FB9299B.
Note!
Please note that a clearance of 50 mm must always be maintained between intrinsically safe
and non-intrinsically safe circuits.
