Siemens SIMATIC NET RUGGEDCOM RSG2100 Service Manual page 23

Module Replacement
2.2.2 Accessing Modules on the Bottom Row
9.
16
Remove the center screw from the main inner assembly.
Figure 2.9 Removing the Center Screw
RUGGEDCOM RSG2100
Service Manual, 07/2019, C79000-G8976-1151