This manual contains notices intended to ensure personal safety, as well as to protect the products and
connected equipment against damage. These notices are highlighted by a warning triangle and are graded
according to severity by the following texts:
Indicates that death, severe personal injury or substantial property damage will result if proper
precautions are not taken.
Indicates that death, severe personal injury or substantial property damage can result if proper
precautions are not taken.
Indicates that minor personal injury or property damage can result if proper precautions are not taken.
indicates that property damage can result if proper precautions are not taken.
contains important information about the product, its operation or a part of the document, to which special
attention is drawn.
A device/system may only be commissioned or operated by qualified personnel. Qualified personnel as
referred to in the safety guidelines in this document are persons authorized to start up, ground and tag
circuits, equipment and systems in accordance with established safety practice.
Please observe the following:
The equipment/system or the system components may only be used for the applications described in the
catalog or the technical description, and only in combination with the equipment, components, and
devices of other manufacturers as far as this is recommended or permitted by Siemens.
The product will function correctly and safely only if it is transported, stored, set up, and installed as
intended, and operated and maintained with care.
SIMATIC, SIMATIC HMI and SIMATIC NET are registered trademarks of SIEMENS AG.
Other designations used in this document may be registered trademarks; the owner's rights may be viola-
ted if they are used by third parties for their own purposes.
Copyright W Siemens AG, 1999 – 2004. All rights reserved
The reproduction, transmission or use of this document or its
contents is not permitted without express written authority.
Offenders will be liable for damages. All rights, including rights
created by patent grant or registration of a utility model or design, are
Automation & Drives
Motion Control Systems
P.O. Box 3180, D-91050 Erlangen
Exclusion of Liability
We have checked the contents of this manual for agreement with the
hardware and software described. Since deviations cannot be
precluded entirely, we cannot guarantee full agreement. However,
the data in this manual are reviewed regularly and any necessary
corrections included in subsequent editions. Suggestions for
improvement are welcomed.
Siemens AG, 2004.
Technical data subject to change.
SM 335 – High-Speed Analog Input/Output Module for the SIMATIC S7-300