Siemens SIMATIC S7-400 Hardware And Installation Manual page 235

Figure 8-27 Separating the Modules, for Example When the Mass Storage Module is to be Replaced
Fitting a Module
Fit the new module in the reverse order. Further details can be found in Section
8.4.6, "Fitting Expansion Modules to a CPU" and Section 8.4.7, "Installing a
Module Assembly in the Rack" on pages 8-16 and 8-23.
Reactions of the M7-400 After Replacing a Module
After replacing a module, the CPU goes to the RUN state if there are no errors. If
the CPU remains in the STOP state, you can use STEP 7 to display the cause of
the error (see manual Configuring Hardware and Communication Connections with
STEP 7 V5.0 ). If the cause of the error is not displayed, check the BIOS Setup or
reinstall the system software if necessary.
Note
If a data medium such as the on-board silicon disk, memory card, or hard disk has
been replaced with the module replacement, it may be necessary to reinstall the
operating system, user programs, etc. (see the corresponding sections in the
M7-SYS User Manual ).
S7-400 and M7-400 Programmable Controllers, Installation Manual
C79000-G7076-C424-01
www.gkbpx.com
1.
2.
Assembling the M7-400
Level surface
8-53