Devicenet - IAI RoboNet Operation Manual

(2) DeviceNet

Check the operation manual for the master (PLC) for details on DeviceNet. The following explains the points to note
regarding network wiring.
An example of network connection is shown below.
With terminal
resistor
Branch
line
Node Node
(1) An equipment connected to a network and having an assigned address is called a "node." A node may be the master
(DeviceNet unit in the above figure) that manages the DeviceNet network, or a slave that connects external I/Os to the
network. Both master and slave nodes can be set in any positions.
(2) A terminal resistor is required on both ends of a trunk line (bold line in the figure). A cable branching from a trunk line
(normal line in the figure) is called a "branch line."
Use a dedicated 5-wire cable for DeviceNet. Select a thick cable or thin cable according to the supplied current.
The dedicated cable is explained on the ODVA website.
The details of the dedicated cable are as follows.
DeviceNet unit (master)
Node
Node Node
Communication
power supply
24 VDC
Color
Red
White
---
Blue
Black
T-branch tap
Trunk line
Node
Node Node
Signal type
Power cable + (V+)
Communication data high (CAN H)
Shield
Communication data low (CAN L)
Power cable - (V-)
Part 2 Startup Chapter
With terminal
resistor
Node
Colors of wires are
also printed on the
dedicated connector.
257