Siemens S7-300 - 4 Addressing and installation; 4.1 Address Assignments in the CPU

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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
A5E00203919-01
5-5
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The direct contact between the shielding contact element and the rail enables you
to connect all shielded cables of your S7 modules to ground.
1
2
Figure 5-2 Shielding contact element
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 the shielding terminals
 the retaining bracket
Mount the bracket (Order No. 6ES5 390-5AA0-0AA0) to the rail using the two
screw bolts.
If you use a shielding contact element, the specified dimensions apply from the
lower edge of the module.
• Width of the shielding contact element: 80 mm
• Number of mountable shielding terminals per shielding contact element: max 4
Table 5-3 Shielding terminals - overview
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Cable shielding diameter 2 mm to 6 mm 6ES7 390–5AB00–0AA0
Cable shielding diameter 3 mm to 8 mm 6ES7 390-5BA00-0AA0
Cable shielding diameter 4 mm to 13 mm 6ES7 390-5CA00-0AA0