Siemens SIMATIC C7-635, Manual

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Special Features of the C7-635
4-8
C7-635 Control System
A5E00155581-04
Connecting Additional S7-300 Modules at a Distance of Up to 1.5 m
As a prerequisite, you must have the “1.5 m cable” accessory specifically for the
C7-635 and a standard DIN rail.
Use the following procedure to connect the additional modules:
1. Connect the C7-635 to the outermost modules on the left-hand side by means
of the connecting cable.
2. Mount the modules on an S7 standard DIN rail of the S7-300 programmable
controller.
3. Using the cable clamp, connect the shield support of the I/O bus cable to the
S7 DIN rail.
S7 DIN rail
S7-300 module
Cable clamp for shield support
Figure 4-4 Connecting Additional S7-300 Modules at a Distance of Up to 1.5 m