Profiles

What is a profile?

There are three types of profile:

Communication profiles

Functional profiles

Application profiles

Communication profiles

A communication profile describes the characteristics of the bus or network:

Cables

Connectors

Electrical characteristics

Access protocol

Addressing system

Periodic exchange service

Messaging service

etc.

A communication profile is unique to a type of network (Fipio, Profibus DP, etc.) and is used by various different types of device.

Functional profiles

A functional profile describes the behavior of a type of device. It defines:

Functions

The parameters (name, format, unit, type, etc.)

The periodic I/O variables

State chart(s)

etc.

A functional profile is common to all members of a device family (variable speed drives, encoders, I/O modules, displays, etc.).

Ideally, functional profiles should be network-independent, but in reality they are not. They can feature common or similar parts. The standardized (IEC 61800-7) functional profiles of variable speed drives are:

CiA402

PROFIDRIVE

CIP

DRIVECOM has been available since 1991.

CiA402 "Device profile for drives and motion control" represents the next stage of this standard’s development and is maintained by Can In Automation.

Some protocols also support the ODVA (Open DeviceNet Vendor Association) profile.

Application profiles

Application profiles define in their entirety the services to be provided by the devices on a machine. E.g. profile for elevators "CiA DSP 417- 2 V 1.01 part 2: CANopen application profile for lift control systems - virtual device definitions".

Interchangeability

The aim of communication and functional profiles is to achieve interchangeability of the devices connected via the network. Although this aim is not always achieved, the profiles facilitate free competition.

11

Page 11
Image 11
Schneider Electric 61 user manual Profiles, What is a profile?