Siemens PC 870 manual Interface assignment, Front-side USB interface, Signal type

Description of Device

2.3.3Interface assignment

Front-side USB interface

Table 2-2	Pin assignment of front-side USB interface
		Pin	Name	Type	Remark

4

3

2

1

4	USB_GND	V	Chassis ground for external USB in-
			terface
3	USB_D0P	B	Data+, USB channel 0
2	USB_D0M	B	Data±, USB channel 0
1	USB_P5V_fused	V	+ 5V (fused) for external USB inter-
			face;
			max. 100 mA, use an external power
			supply for devices requiring higher
			currents

Signal type
B	Bi-directional
O	Output
V	Voltage

Note

The NEMA-standard versions do not possess a front-side USB inter- face (see Appendix: Technical Data)

2-8	SIMATIC Panel PC 670 / 870 Operating Unit, Equipment Manual
	Edition 07/01