Siemens S7-400 !, !

!Danger

indicates that death or severe personal injury will result if proper precautions are not taken.

!Warning

indicates that death or severe personal injury may result if proper precautions are not taken.

!Caution

with a safety alert symbol indicates that minor personal injury can result if proper precautions are not

taken.

Caution

without a safety alert symbol indicates that property damage can result if proper precautions are not

taken.

Notice

indicates that an unintended result or situation can occur if the corresponding notice is not taken into

account.

If more than one degree of danger is present, the warning notice representing the highest degree of

danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a

warning relating to property damage.

Qualified Personnel

The device/system may only be set up and used in conjunction with this documentation. Commissioning

and operation of a device/system may only be performed by qualified personnel. Within the context of the

safety notices in this documentation qualified persons are defined as persons who are authorized to

commission, ground and label devices, systems and circuits in accordance with established safety

practices and standards.

Prescribed Usage

Note the following:

!Warning

This device and its components may only be used for the applications described in the catalog or the

technical description, and only in connection with devices or components from other manufacturers which

have been approved or recommended by Siemens.

Correct, reliable operation of the product requires proper transport, storage, positioning and assembly as

well as careful operation and maintenance.

Trademarks All names identified by ® are registered trademarks of the Siemens AG.

The remaining trademarks in this publication may be trademarks whose use by third parties for their own

purposes could violate the rights of the owner.

Disclaim of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software

described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However,

the information in this publication is reviewed regularly and any necessary corrections are included in sub-

sequent editions.

Safety Guidelines

This manual contains notices you have to observe in order to ensure your personal safety, as well as to

prevent damage to property. The notices referring to your personal safety are highlighted in the manual by

a safety alert symbol, notices referring to property damage only have no safety alert symbol. The notices

shown below are graded according to the degree of danger.

Technical data subject to change

SIEMENS AG

Automation and Drives

Postfach 4848

90437 NÜRNBERG

GERMANY

A5E00850741-01

11/2006