Siemens Automation System S7-400 - Manual (Page 48)

Installing the S7-400
2-32
Automation System S7-400 Hardware and Installation
A5E00850741-01
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 2-4 Attaching the Modules
Screwing the Modules in Place
Tightening torque
0.8 to 1.1 Nm
Figure 2-5 Screwing the Modules in Place