Introduction
1
1.1 About SINUMERIK
From simple, standardized CNC machines to premium modular machine designs – the
SINUMERIK CNCs oer the right solution for all machine concepts. Whether for individual parts
or mass production, simple or complex workpieces – SINUMERIK is the highly dynamic
automation solution, integrated for all areas of production. From prototype construction and
tool design to mold making, all the way to large-scale series production.
Visit our website for more information SINUMERIK (
https://www.siemens.com/sinumerik).
1.2 About this documentation
Validity
This Equipment Manual deals with the TCU 30.3 Thin Client Unit. This documentation is valid for
the SINUMERIK 840D sl system.
Target group
This Equipment Manual addresses planners, installers and conguration engineers in the eld of
automation technology. The Equipment Manual enables the target group to install, assemble,
test, and operate the device professionally and safely.
Structure
The documentation provides information about components and functions of the TCU 30.3.
• The chapter "Description" contains general information about the device, such as
appearance, features and interfaces.
• The "Mounting" chapter contains information on mounting the TCU to an operator panel
front.
• The chapter "Connecting" describes the pin assignment and the connection of the interfaces.
• In addition to the technical specications of the device, the chapter "Technical
specications" contains information on disposal, as well as on the relevant standards and
approvals.
Standard scope
This documentation only describes the functionality of the standard version. This may dier
from the scope of the functionality of the system that is actually supplied. Please refer to the
ordering documentation only for the functionality of the supplied drive system.
TCU 30.3
Equipment Manual, 03/2023, A5E40874197B AD 5
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