SIMATIC TOP Connect and SIMATIC TOP Connect TPA
8-15
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Connecting the power supply
Always connect the supply voltage to the front connector module Observe the
wiring rules in Table 8-3 on page 8-7.
In the following example, you must connect L+ to Plus of the upper terminal and M
to Minus of the lower terminal.
Connecting the terminal block for one-conductor connection
1
2
3
4
5
6
7
8
9
10
Front connector
module
–
+
11
12
3
1
5
1
6
7
1
8
1
19
20
L+
M
–
+
Terminal block
Terminal block
Figure 8-8 Wiring a Digital Module with Terminal Block for a One-Conductor Connection
14
1
1
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