DeviceNet interface
Leuze electronic GmbH + Co. KG
AMS 355
i
53
TNT
35/7-2
4V
9
DeviceNet interface
9.1
General information on DeviceNet
9.1.1
Topology
A bus address is assigned to each participant connected to DeviceNet; this address is repre
-
sented by a DeviceNet MAC ID (Media access control identifier).
Including the master, up to 64 participants can be connected to one network. The address
range spans from 0 to 63.
Figure 9.1: Bus topology
Attention!
According to DeviceNet specification (Volume 3: DeviceNet Adaptation of CIP Chapter 8,
Physical Layer 8-3.3 Connectors), use of the BUS OUT connection is not allowed.
The topologies presented here are enabled according to the directives of the ODVA.
On the respective ends of the trunk line (master line), the bus must be terminated with a 120
ohm terminating resistor. A cable specified by the ODVA is required for connecting the partic
-
ipants to DeviceNet.
In addition to the two signals for data transmission – CAN_L and CAN_H – the DeviceNet
cable also provides two additional lines for supplying the network device or bus transceiver
with power.
Terminator
Trunk Line
Terminator
Tap
Drop
Line
Tap
Drop
Line
Tap
Drop
Line
Drop
Line
M12
BUS IN
connector
M12
BUS IN
connector
M12
BUS IN
connector
M12
BUS IN
connector