3-1
FM 456-2 Application Function Module Installation, Hardware, and Startup
C79000-G7076-C458-01
Replacing Modules
This chapter tells you how to replace interface submodules, application function
modules or expansion modules and short AT modules. All other important
information for replacing modules applies to both S7-400 and M7-400 modules and
is described in
manual /1/.
!
Warning
The modules can be damaged.
If interface submodules are inserted or removed with power applied, the
application function module, expansion modules and interface submodules can be
damaged.
Never insert or remove interface submodules with power applied. Always switch
off the power supply (PS) before inserting or removing interface submodules.
Observe the ESD rules when inserting or removing M7 modules and interface
submodules.
Note
No module in the S7-400 system may be replaced while data is being exchanged
via the MPI interface of the S7/M7-400 CPU!
Pull out the plug on the MPI interface if you are not certain!
Tool
You will require a cylindrical screwdriver with 3.5 mm wide blade for replacing the
modules and memory submodule.
In this Chapter
Section
Subject
Page
3.1
Replacing the Interface Submodules
3-2
3.2
Replacing an Application Function Module or Expansion Module in a
Module Assembly
3-4
3.3
Replacing the Short AT Module
3-9
3