Rockwell-automation 1760-DNET Pico DeviceNet Communications Module Use Manual de usuario descargar pdf (Pagina 28)

Publication 1760-UM003A-EN-P - September 2005

4-4 DeviceNet Functions

Manufacturer-Specific Objects

These objects define device-specific data and functions (Application

Objects, Parameter Object, Assembly Object).

• Application Objects – Pico Object

Application objects (Class ID: 64

hex

) describe simple

applications for automation engineering. They are either

predefined in the DeviceNet object library or by the user.

Refer to Pico Object on page 4-6.

• Assembly Objects

The Assembly Object (Class ID: 04

hex

) provides the user with

mapping options, that is attribute data of different instances in

different classes can be grouped together to form a single

attribute of an instance in an assembly object.

Identity Object

Object Address Function Access

Class ID Instance ID Attribute ID Service Code

hex

Table 4.4 Table 4.5

Table 4.4 Attribute IDs of the Identity Object Instance

Attribute

Access Name Description Size

(byte)

1 Read Vendor ID Allen-Bradley Vendor ID = 1 2

2 Read Device type The 1760-DNET belongs to the

communication adapters category. Its

value is 12

dec

3 Read Product code Allen-Bradley product code = 18410 2

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 167 168

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Rockwell-automation 1760-DNET Pico DeviceNet Communications Module Use Manual de usuario Pagina 28