ITEM C 3-Series - 8.12 Connector: USB [X19]; 8.12.1 Configuration on the device [X19]; 8.12.2 Mating connector [X19]; 8.12.3 USB [X19]

Electrical installation
Page 105
8.12 Connector: USB [X19]
8.12.1 Configuration on the device [X19]
 USB connector (female), type B
8.12.2 Mating connector [X19]
 USB connector (male), type B
8.12.3 USB [X19]
Table 45: Pin assignment USB interface [X19]
Pin no.
Name
Value
Specification
1 VCC + 5 VDC
2 D- Data -
3 D+ Data +
4 GND GND
Figure 28: Pin assignment USB interface [X19], front view
8.12.4 Cable type and configuration [X19]
Interface cable for the USB interface, 4 cores, shielded and twisted.
In order to set up a USB connection, it is mandatory to use a twisted and shielded (4-core) cable since, otherwise, the
transmission may be subject to interferences. In addition, it must be ensured that the cable has a wave impedance of 90 Ω.