1-17
SIMATIC PC BI45/FI45 PII, Technical Description
C79000-G7076-C794-03
1.4.5
Removing and Installing Expansion Modules
Close the application you are using.
Remove the diskette or CD-ROM from the drive.
Pull out the power supply connector.
Release the 6 screws on the cover of the unit. (If necessary, remove the
BI45 from its support or lower the system box away from the front panel
as described in Section 1.4.2).
Module retainers
Expansion modules
Fastening screws
for the expansion
modules
Figure 1-12 Opening the Cover of the Unit
First you must remove the crossbeam on which the modules are mounted.
When you bend the notched spring clips inwards a little, the snap-in
lockings can be released.
Grip the crossbeam, push it approximately 1cm to the left, and then lift it
out with the the module retainers.
System Unit