Siemens SIMATIC S7-400 Hardware And Installation Manual page 228

Assembling the M7-400
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.
8-46
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S7-400 and M7-400 Programmable Controllers, Installation Manual
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