Installation manual

Assembling the M7-400
8-46
S7-400 and M7-400 Programmable Controllers Hardware and Installation
A5E00069481-04
8.8 Replacing Modules and Submodules/Cards
Contents
This section explains
• How to replace interface submodules,
• How to replace CPUs or expansion modules of a module assembly,
• How to replace memory cards,
• How to replace a short AT card.
All other important information for replacing modules applies both to the S7-400
and the M7-400 modules and is described in Chapter 7.
Tool
To replace modules and submodules/cards, you need a cylindrical screwdriver with
3.5 mm blade width.