Siemens S7-300 - Move the Front Connector into Wiring Position

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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
7-10 A5E00203919-01
2
CPU
PS
1
1
3
2
Figure 7-4 Move the front connector into wiring position
Table 7-7 Assignment of front connectors to modules
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 Power supply switched off (PS)
 Opened module
 Front connector in wiring position
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Table 7-8 Wiring the front connector
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(1) Thread the cable strain relief into the front
connector.
–
Do you want to exit the cables at the bottom of the module?
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Starting at terminal 20, work your way down
to terminal 1.
Starting at terminal 40 or 20, wire the
connector, working in alternating passes
from terminals 39, 19, 38, 18 etc. until you
have reached terminals 21 and 1.
(2)
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Starting at terminal 1, work your way up to
terminal 20.
Starting at terminal 1 or 21, wire the
connector, working in alternating passes
from terminals 2, 22, 3, 23 etc. until you
have reached terminals 20 and 40.