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9
9 Communication
9.1 Overview
Chapter 9 Communication
9.1 Overview
The main module of an H3U PLC has Ethernet communication and CAN communication ports, and supports
CANlink and CANopen protocols.
The module has two independent serial communication ports: COM0 and COM1. COM0 can be used for
programming and monitoring. COM1 functions are user-dened.
The module has one MiniUSB communication port, which can be used for uploading, downloading, monitoring,
and conguration.
The following gure shows position of each port and instructions.
H
3U
-0808PMRTA
ETH
1
RUN
STOP
COM0
0
Baud Station
12345678
ON
RS485 interface
1
RUN
STOP
0
Baud Station
12345678
ON
Rotary switch
DIP switch
DIP switch for Ethernet IP address
configuration (hexadecimal): The
weighted value of DIP switch 0 is 1,
and the weighted value of DIP
switch 1 is 16.
For example, if switch 1 is turned to
5, 0 to 5, the code is H55, and 5 x
16 + 5 = 85 in decimal format.
Resistor connected to the CAN
port, which must be set to ON
when residing at the network end
Resistor connected to the RS485
interface, which must be set to ON
when residing at the network end
Diagram of
H3U
-3232MT/R and
H3U
-0808PMRTA communication interfaces
COM0
RUN
STOP
Baud
Station
CR
RS485 communication terminal
RJ45 interface for Ethernet
communication
DIP switch
H
3U
-1616MT-XP
CAN communication terminal
Baud
Station
CR
1 2345678910
12345678910
Diagram of
H3U
-1616MT/R-XP communication interface