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Interfaces
①
②
Figure 5-1
The protective conductor connection must be in compliance with national regulations. As a
minimum, the cross-section required is the cross-section of the line feeder cable of the assigned
devices.
USB upstream port X125
Interface X125 is implemented as "high powered interface" (5 V/ 500 mA). As a consequence,
the X125 can only be connected to USB interfaces which have their own power supply and
whose downstream ports are capable of supplying a 500 mA current. A standard USB 2.0 Hi-
Speed cable of max. 3 m long (recommended: 1.5 m) is supported.
Connector designation:
Connector type:
Table 5-1
Full CNC keyboards: KB 1500 and KB 1900
Equipment Manual, 09/2022, A5E52185085B AB
USB upstream port X125
Protective conductor connection, threaded bolts M5
Rear side, diagram showing the KB 1900 as example
Assignment of the USB interface
Type B socket
Pin
1
2
3
4
X125
USB-B connector (4-pin)
Name
Type
P5V
Data-
Data+
GND
Remark
V
+ 5 V
Data -
B
Data +
V
Ground (reference potential)
5
23
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