Station Characteristics Using Option Modules; Connection Phase; Figure 46: Usage Of Option Module With Physical Slot Reservation - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-375 PROFINET IO advanced Fieldbus Coupler
Should it be possible to replace the physical option module at slot 7 by the real
PROFIsafe V2 module, it is recommended to bypass the missing slot space of
12 mm using a passive spacer module 753-629/020-000. Thus an optional later
use of the PROFIsafe V2 module without shifting the succeeding I/O modules by
12 mm is ensured. To reserve the slot 12 physical as an option, the above
mentioned passive spacer module can be plugged again.
The resulting station layout is shown in the following figure.

Figure 46: Usage of option module with physical slot reservation

7.7.2

Station Characteristics using Option Modules

7.7.2.1

Connection Phase

There are significant differences in checking real against expected configuration
during connection establishment to an IO device comprising optional modules.
The option modules assume the identity of the configured I/O module at the
particular slot. Thus no module difference is notified for a slot containing an
active spacer module. Even a change of the expected configuration doesn't result
in module differences during configuration check.
Are there more configured I/O modules than physically plugged, the missing I/O
modules can be virtually appended. Such virtual option modules don't cause
module differences to be notified by the fieldbus coupler, even if a
reconfiguration in the section of virtual option modules is initiated and the
connection is established again.
The non-option modules plugged are checked against the expected configuration
as usual. Any module differences are reported to the IO controller during
connection establishment.
Manual
Version 1.1.0
Function Description 87