Siemens Simatic ET 200S Operating Instructions Manual page 181

The identifier-related diagnostics for ET 200S is structured as follows for the IM151-1
STANDARD, IM151-1 FO STANDARD and IM151-1 HIGH FEATURE interface modules:
Figure 8-9
Note
The module slot is encrypted in Byte 16/17/35, Bit 0 to 5. The following applies: Displayed
number +1 ≙ Slot of the module (0 ≙ Slot 1; 1 ≙ Slot 2; 3 ≙ Slot 4, etc.)
In Byte 17 / 18 / 36, Bit 6/7, 00
diagnostic.
ET 200S
Operating Instructions, 12/2005, A5E00515771-03
8.1 Alarm, error and system messages on PROFIBUS DP
Structure of the channel-related diagnostics for ET 200S with IM151-1 STANDARD,
IM151-1 FO STANDARD, and IM151-1 HIGH FEATURE
is output if a power module reports a channel-specific
B
Alarm, error and system messages
8-33