A Drive is understood in this specification as Device equipped with one or more motors controlled by the application which has control priority.

A PROFINET Drive is a Drive which is controlled over a PROFINET interface in normal operation.

A Drive Object is a part of a Drive Unit and contains the Process Control Task. The Drive Object shall have Parameters as a minimum functionality (see [PI 3172 PDP], chapter 6.1.3.4).

Drive Object type which is typically related to a motor (Drive Axis).

A Telegram represents the cyclic data of one PN Submodule. A Telegram consists at least of one Input Telegram or of one Output Telegram or of both (see [OPC 30142 RIO], chapter 3.2.21). The Signals transmitted with one Telegram can be configured as described in [PI 3172 PDP], chapter 6.3.4.4.

A Standard Telegram consists of Standard Signals supported by an Axis/DO which is specified in [PI 3172 PDP] and which can be configured to be included in the DO IO Data as described in[PI 3172 PDP], chapter 6.3.4.3.

Signals are components of a Telegram.

Standard Signals are defined as Signals which are part of a Standard Telegram. The Signals supported by a Axis/DO are defined in [PI 3172 PDP], chapter 6.3.4.2.

A PN Submodule is the consumer or the provider of one Telegram and the addressable endpoint for PROFINET access (see [OPC 30142 RIO], chapter 3.2.25).