Connecting
4.3 Connecting components
5
6
8
1
5
5
2
10
5
①
②
③
④
⑤
⑥
⑦
⑧
⑨
⑩
⑪
The connections for the supply voltage are only available as the screw-loaded terminals. These
are also available as a screw-type version.
The following table shows the assignment of the respective cable connections to the channels
of the signal modules via the address assignment.
Assignment of the cable connections to the address bytes of the 32-channel digital modules and com‐
pact CPUs for the X2 interface
Cable connections Address assignment for
①
②
30
5
7
+
-
+
-
9
3
5
5
4
11
+
-
+
-
5
Cable connections
Cable connections
Cable connections
Cable connections
Openings for strain relief
Opening for connecting cable
Opening for screwdriver
①
Supply connections for
③
Supply connections for
②
Supply connections for
④
Supply connections for
Digital input module
IB x
IB (x+1)
Digital output module
QB x
QB (x+1)
Digital input/output mod‐
ule and Compact CPU
connection X2
IB x
IB (x+1)
System cabling for S7-300
Manual, 09/2018, 70327045899