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4 Electrical connection
4.3 Connection elements
Front USB host interface (without cover)
Back connection elements
This graphic shows an exam-
ple with specific options.
Slot 4 (option 4)
Slot 3 (option 3)
Slot 2 (option 2)
Slot 1 (option 1)
Connection element and assignment Connection element and assignment
1. USB device interface 4. Relay 1 (changeover contact)
2.1
2.1,
2.2
Ethernet interface (as a standard feature) or
PROFINET interface (including Ethernet; extra
code)
5. Voltage supply
6. -
29.
Option inputs and outputs (Slot 1 to Slot 4)
3. RS232/RS485 interface