Vision OPLC V290-19-C30B Installation Manual page 8

CANbus
These controllers comprise a CANbus port. Use
this to create a decentralized control network of
up to 63 controllers, using either Unitronics'
proprietary CANbus protocol or CANopen.
The CANbus port is galvanically isolated.
CANbus Wiring
Use twisted-pair cable. DeviceNet® thick
shielded twisted pair cable is recommended.
Network terminators: These are supplied with the
controller. Place terminators at each end of the
CANbus network.
Resistance must be set to 1%, 121Q, 1/4W.
Connect ground signal to the earth at only one
point, near the power supply.
The network power supply need not be at the
end of the network
CANbus Connector
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8
Vision™ OPLC™ V290-19-C30B, V290-19-T40B
24V Power
Supply
-
-V
L
PE
H
+V
-V
L
PE
H
+V
-V
L
PE
H
+V
121
terminating
resistor
+
Circuit
protection
device
121
terminating
resistor
11/06 DIG-V290-CT
Unitronics