Communication Outline; Network Configuration - Mitsubishi Electric A1SJ71DN91 User Manual

1. OUTLINE

1.2 Communication Outline

1.2.1

Network configuration

Master station
Termination
resistance
Slave station
The DN91-based DeviceNet network is configured as shown below.
Tap
Drop line (branch)
1) Up to 64 units can be connected including the master station (DN91) and slave stations.
2) The positions of the master station and slave stations are not fixed. They can be arranged
at any position on the network.
3) The network comprises trunk lines and drop lines.
A termination resistance must be connected to each end of a trunk line.
4) A network power supply must be connected to supply power to the network com-
munication circuits in each station.
Drop line
Network power
supply unit
(24 VDC)
Power tap
Slave station
Slave station
−
1 3
MELSEC-A
Trunk line
Slave station
Termination
resistance
Slave station