Siemens S7-400 - Attaching the Modules; Screwing the Modules in Place

Installing the S7-400
2-35
S7-400 and M7-400 Programmable Controllers Hardware and Installation
A5E00069481-04
Attaching the Modules
Attach the modules one by one (1) and swing them carefully downwards (2). If you
feel a resistance when swinging the module down, raise it slightly and then
continue.
(1)
(2)
Figure 2-6 Attaching the Modules
Screwing the Modules in Place
Tightening torque
0.8 to 1.1 Nm
Figure 2-7 Screwing the Modules in Place