3-11
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
The ET 200U can be configured in a maximum of 4 tiers with up to 32 slots.
The slots are numbered consecutively, starting with the slot next to the ET
200U module which has the number “0”. The numbers are assigned in any
case, whether a module is plugged in or not.
If the ET 200U is configured in more than one tier, numbering of the expan-
sion tiers is continued with the slot at the far left end.
PS IM
318
0
1
2
3
4
5
6
7
8
9
10 11
12 13 14 15
Figure 3-8 Numbering with Multi–tier Configuration
When expanding the configuration, it is essential that you always mount the
additional bus units in the top tier on the right. Otherwise the slot numbers of
the bus units to the right of the the expansion will be changed.
Addressing with
Multi–tier Configu-
ration
Mechanical and Electrical Configuration