Siemens SIMATIC S7 - Example of an SDB 100

5-4
SM 338 Equipment Manual
(4) J31069-D401-U1-A0-7618
5.2 Example of an SDB 100
Using a programmable controller containing an SDB 100, modules whose
parameters can be assigned can be parameterized each time a switch is made
from STOP to RUN.
During startup, the CPU performs a bus identification procedure and enters
the module identifier(s).
When the SDB 100 is transferred to the module, the CPU first checks to de-
termine whether the module identifier entered for the respective slot matches
the module identifier stored in the SDB 100 for this slot . The parameters are
not transferred until this check is performed successfully.
The module identifier classifies the installed module with respect to its ad-
dress in the I/O address area of the CPU.
Example:
The SM 338 has the module identifier 05ED
H
.
00000101 11101101
16-byte input area (counting v alues)
16-byte output area (not used)
System identifier for S7
Can be parameterized
Class identifie r: SONDER
Type class: SM-ANALOG
Introduction
Module identifier
O
p
e
r
a
tion