Product Specifications
2
0
1
8
-1
2
17
2.6.2
Function
I/O modules
I/O modules are used to modify signals between field devices in explosion-hazardous areas
and controllers or control systems in the safe area. The slots for the I/O modules on the
backplane are equal, so you can use I/O modules with different functions next to each other.
The various I/O modules can be plugged in.
Com unit
Com units form the interface between the I/O modules and the process control system. The
com unit converts the protocol of the bus integrated in the backplane to the protocol of the
higher-level bus system.
Another com unit variant is the gateway. This is described in more detail below.
