Chapter 3
Installation
MAN_105G_1.16
Page 120
4.12
Fieldbus Configuration – DeviceNet
4.12.1
DeviceNet Introduction
DeviceNet is a broadcast-oriented communications protocol based on the Controller Area
Network (CAN). The physical fieldbus is a shielded copper cable composed of one twisted
pair and two cables for the external power supply. The baud rate can be changed between
125k, 250k, and 500kbit/s via Configuration Software or DIP-switch.
DeviceNet has a user organisation, the Open DeviceNet Vendor Association - for further
information see www.ODVA.org
4.12.2
DeviceNet Address Setting
On a DeviceNet network, each node must be assigned its own unique Mac ID (Node
Address). The Mac ID is a value between 0 and 63 used to identify each node. On the 105G
DeviceNet module, the Mac ID and Baud rate settings can be set either using a physical DIP-
switch or via the Configuration Software (Fieldbus Configuration page). To use the switch
address settings, the “Enable Switch Address” option in configuration software must be
selected, otherwise switch settings are ignored. We recommend that you do NOT use the
DIP switch to set address/baud rate as switches can be accidentally changed during operation
The DIP-switches are numbered 1 through 8. Switch 1 and 2 are used to configure the Baud
rate, and switches 3 through 8 are used to configure the Mac ID using binary format (see
tables below)
Mac ID Switch Setting:
Address
SW. 3
(MSB)
SW. 4
SW. 5
SW. 6
SW. 7
SW. 8
(LSB)
0
OFF
OFF
OFF
OFF
OFF
OFF
1
OFF
OFF
OFF
OFF
OFF
ON
2
OFF
OFF
OFF
OFF
ON
OFF
---
---
---
---
---
---
62
ON
ON
ON
ON
ON
OFF
63
ON
ON
ON
ON
ON
ON
Baud Rate Settings:
Baud Rate, bit/sec
SW. 1
SW. 2
125k
OFF
OFF
250k
OFF
ON
500k
ON
OFF
Reserved
ON
ON