5 how to access the parameters, 1 explicit messages, 2 object classes – GE Industrial Solutions AF-650 GP DeviceNet User Manual
Page 28: 3 devicenet object classes, 1 class id 01h identity object, 2 class id 01h identity object
5 How to Access the Parameters
5.1 Explicit Messages
DeviceNet is based on the CAN protocol. This means that every message contains an 11-bit CAN identifier field to define the connection ID. These CAN identifiers
are also used to determine access priority.
The MAC ID is stored in the header of the message, which is split into four different message groups.
10
9
8
7
6
5
4
3
2
1
0
Identifier bits
0
Group 1 ID
Source MAC ID
Message Group 1
1
0
MAC ID
Group 2 ID
Message Group 2
1
1
Group 3 iD
Source MAC ID
Message Group 3
1
1
1
1
1
Group 4 ID
Message Group 4
1
1
1
1
1
1
1
X
X
X
X
Invalid Can Identifiers
AF-600 FP and AF-650 GP parameters can be accessed by the Standard DeviceNet service Explicit Message. Two classes of explicit messages are supported:
Message group 2: Explicit messages take place via pre-defined master/slave connections. Message group 3: Explicit messages take place via dynamically es-
tablished lower prioritized connections.
5.2 Object Classes
The following Standard DeviceNet objects can be accessed:
Class ID 01h
Identity Object
Class ID 10h
Parameter Group Object
Class ID 03h
DeviceNet Object
Class ID 28h
Motor Data Object
Class ID 04h
Assembly Object
Class ID 29h
Control Supervisory Object
Class ID 05h
Connection Object
Class ID 2Ah
AC/DC Drive Object
Class ID 0Fh
Parameter Object
Class ID 2Bh
Acknowledge Handler Object
The following DeviceNet Vendor Specific Objects are also available:
Class ID 100d to 119d Drive Classes.
The above Object classes are described in the following sections: DeviceNet Object Classes and Drive Object Classes.
5.3 DeviceNet Object Classes
5.3.1 Class ID 01h Identity Object
This is a standard DeviceNet Object for identification of the device (frequency converter). The Heartbeat Interval can be set in this Object. The attributes supported
for this class are listed below.
5.3.2 Class ID 01h Identity Object
This is a standard DeviceNet Object for identification of the device (frequency converter). The Heartbeat Interval can be set in this Object. The attributes supported
for this class are listed below.
AF-600FP /650 GP DeviceNet Operating Instructions
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