Siemens SINUMERIK 840D sl TCU 30.3 Equipment Manual

Connection
5
5.1 Pin assignment of the interfaces
The pins of the component interfaces are assigned as speci󹪝ed in the tables below. Any
deviations are indicated at the relevant point.
Signal type
I Input
O Output
B Bidirectional (inputs/outputs)
V Power supply
- Ground (reference potential) or N.C. (not connected)
5.1.1 Power supply
Connector type: Terminal block, 3-pin contact strip, screw type
Total cable length: 30 m
Table 5-1 Assignment of the power supply interface
 Pin Name Type Meaning



1 P24 (+) 
V/V/-
24 VDC potential (20.4 to 28.8 VDC)
2 M24 (-) 0V
3 Functional earth Connection for grounding the hous‐
ing
5.1.2 USB interfaces
The USB interfaces are implemented as sockets and comply with the generally valid standard.
The version information (1.1, 2.0 etc.), the maximum velocity (low speed, full speed, etc.) and
the socket type (A or B) are documented in the individual sections for the associated devices.
TCU 30.3
Equipment Manual, 03/2023, A5E40874197B AD 33

Siemens SINUMERIK 840D sl TCU 30.3 Specifications

General

Brand	Siemens
Model	SINUMERIK 840D sl TCU 30.3
Category	Security Sensors
Language	English