Rockwell Automation 1753-DNSI DeviceNet Safety Scanner for GuardPLC Controllers - Manual (Page 20)

Publication 1753-UM002A-EN-P - July 2005
1-10 Before You Begin
Assign an Address to Each Device
To communicate on the DeviceNet network, each device requires its
own address. Follow the recommendations below when assigning
addresses to the devices on your network.
Standard DeviceNet assigns communication priority based on the
device’s node number. The lower the node number, the higher the
device’s communications priority. This priority becomes important
when multiple nodes are trying to communicate on the network at the
same time.
DeviceNet Safety nodes have additional priority on the network,
regardless of node number. DeviceNet Safety communications from
devices with lower node numbers have priority over DeviceNet Safety
communications from devices with higher node numbers.
Give this device This address Notes
scanner 0 If you have multiple scanners, give them
the lowest addresses in sequence.
any device on your network,
except the scanner 1 to 61 Gaps between addresses are allowed
and have no effect on system
performance. Leaving gaps gives you
more flexibility as you develop your
system.
RSNetWorx for DeviceNet
workstation 62 If you connect a computer directly to the
DeviceNet network, use address 62 for
the computer or bridging/linking device.
no device 63 Leave address 63 open. This is where a
non-commissioned node typically enters
the network.