Rockwell Automation 1760-DNET Pico DeviceNet Communications Module User Manual - Manual (Page 30)

Publication 1760-UM003A-EN-P - September 2005
4-6 DeviceNet Functions
DeviceNet Object
The DeviceNet object instance is used to configure the
communication module and to define the physical environment. The
Service Codes used for the Identity Object also apply in this case.
Pico Object
The Pico object can be used to access Pico/GFX functions via the
DeviceNet communication bus . The table below shows the attributes
Object Address Function Access
Class ID Instance ID Attribute ID Service Code
03
hex
01
hex
Table 4.6 Table 4.5
Table 4.6 DeviceNet Object Instance Attribute IDs
Attribute
ID Access Name Description Size
(byte)
1 Read/
Write MAC ID The MAC ID represents the network
address of a network node. It can be read
and set for the module via the DeviceNet
fieldbus by means of this attribute. Range
of values: 0 to 63
dec
. (see DeviceNet
Setting the Slave Address on page 3-1)
1
2 Read/
Write Baud rate This attribute can be used to read/set the
data transfer rate for communication
functions. Range of values: 0 to 2, 125 to
500 kbps (see Data Transfer Rates –
Automatic Baud Rate Recognition on page
2-4). 1
3 Read/
Write BOI (Bus-Off
interrupt) This attribute can be used to define the
reaction to a Bus-Off event (CAN-specific). 1
4 Read/
Write Bus-Off
counter This values shows how often a Bus-Off
event has occurred. Range of values: 0 to
255. 1
Object Address Function Access
Class ID Instance ID Attribute ID Service Code
64
hex
01
hex
Table 4.7 Table 4.8