Slot-Oriented Addressing Of The I/O Modules; Structure Of The Default Address Area; Slots On The Et 200S - Siemens SIMATIC ET 200S Manual

Addressing
3.1

Slot-Oriented Addressing of the I/O Modules

Slot-Oriented Address Allocation
In slot-oriented addressing (default addressing) each slot number in a module is
allocated an address area in the IM 151-7 CPU.
Depending on the type of I/O module, the addresses are digital or analog (see
Table 3-1). The address allocation is not fixed and can be changed, but there is a
default address area.
0
Figure 3-1
Slot Assignment
The figure below shows an ET 200S configuration with digital electronic modules,
analog electronic modules, process-related modules and the slot assignment.
Figure 3-2
3-2
256
127

Structure of the default address area

4

Slots on the ET 200S

1263
5 6 7 8 9 10
SSI
ET 200S IM 151-7 CPU Interface Module
2047
Direct communication
16 bytes per analog module
or technology
module
1 byte per digital module,
Motor starter or
4 IQ SENSE
Slot
A5E00058783-04