Siemens SIMATIC IM151-1 - Option Handling with RESERVE Modules; Principle of RESERVE Module Handling

Functions
3.2 Option handling with RESERVE modules
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
26 Manual, 03/2008, A5E01075975-02
3.2 Option handling with RESERVE modules
3.2.1 Principle of operation of option handling with RESERVE modules
Principle
With option handling with RESERVE modules, the configuration of ET 200S Slots 2 to 63 is
checked. If a slot is enabled for option handling, the RESERVE module (option) can occupy
this slot instead of the configured electronic module without triggering a diagnostic interrupt.
If the slot is disabled, only the configured electronic module can occupy this slot. Any other
module will trigger a diagnosis. You can also control the configuration of Slots 2 to 63 and
monitor the configuration of Slots 1 to 63 using the control and feedback interface in the
process input image (PII) and process output image (PIQ).
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Figure 3-4 Principle of operation of option handling with RESERVE modules