Canbus Wiring; Canbus Connector - Unitronics EX-RC1 Manual

EX- RC1
R e m o t e I / O Ad a p t e r
Communication
Connecting the EX-RC1 to a PC
Connect the PC to the adapter via the programming cable. The pinout below shows the RS232 port signals.
Connecting the EX-RC1 to the CANbus network
Connect the EX-RC1 adapter to an OPLC as shown below. The module communicates via Unitronics'
proprietary UniCAN protocol. UniCAN can comprise up to 60 nodes, including PLCs and EX-RC1
remote I/O adapters.
The CANbus port is galvanically isolated.

CANbus Wiring

Network terminators: Place terminators
at each end of the CANbus network.
Resistance must be set to 1%, 121O,
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

6
Pin # Description
1 —
2 0V reference
3 TXD signal
4 RXD signal
5 0V reference
6 —
Pin #1
24V Power
Supply
-
-V
L
PE
H
+V
-V
L
PE
H
+V
-V
L
PE
H
+V
121
terminating
resistor
2/12
+
Circ uit
protection
device
121
terminating
res istor
Unitronics