Addresses Of The Et 200S I/O Modules - Siemens SIMATIC ET 200S Manual

Address Assignment
Depending on the slot, 1 byte is reserved for digital I/Os and 16 bytes are reserved
for analog I/Os in the address areas of the IM 151/7 CPU for each I/O module
(maximum of 63).
The table below indicates the default address assignment for analog and digital
modules per slot. The address areas of the I/O modules are "visible" only to an
IM 151-7 CPU in the ET 200S, not to the associated DP master. The DP master
has no direct access to the I/O modules.
Table 3-1

Addresses of the ET 200S I/O modules

Reserved
Address Area
1
Digital
modules, motor
starters
Analog
modules,
process-related
modules
Power modules
* With X1 as the MPI-/DP interface and X2 as the DP master interface
The unassigned addresses in the range 64 to 127 are in the process image in
default addressing and can be used any way you choose in the user program. If 2
bits in a byte are already occupied by a digital module, the remaining 6 bits cannot
be used as you choose (e.g. the bits 1.4 to 1.7 in Figure 3-3).
You can use the bytes in the address areas that are not used by modules in any
way you choose in your user program. In the configuration in Figure 3-3, for
example, bytes 2 and 3 can be used as you choose.
ET 200S IM 151-7 CPU Interface Module
A5E00058783-04
2 3 4
-
- 272 to
287
256 272
Slot Number
5 6 7
1 2 3
288 to 304 to
303 319
288 304
Addressing
8 ... 66
4 ... 62
320 to ... 1248 to
335 1263
320 1248
3-3