Siemens SIMATIC S7-400 Hardware And Installation Manual page 50

Installing the S7-400
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.
Figure 2-4
Screwing the Modules in Place
Figure 2-5
2-30
www.gkbpx.com
(1)
(2)
Attaching the Modules
Tightening torque
0.8 to 1.1 Nm
Screwing the Modules in Place
S7-400 and M7-400 Programmable Controllers, Installation Manual
C79000-G7076-C424-01