Rockwell Automation 2080-LC20-20QBBR Micro820 20-point Programmable Controllers User Manual User Manual
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Rockwell Automation Publication 2080-UM005A-EN-E - December 2013
Chapter 5
Communication Connections
2.
Select Modbus RTU on the Driver field.
3.
Specify the following parameters:
• Baud rate
• Parity
• Unit address
• Modbus Role (Master, Slave, Auto)
4.
Click Advanced Settings to set advanced parameters.
Refer to the table for available options and default configuration for
advanced parameters.
Modbus RTU Parameters
Parameter
Options
Default
Baud Rate
1200, 2400, 4800, 9600, 19200, 38400
19200
Parity
None, Odd, Even
None
Modbus Role
Master, Slave, Auto
Master
Modbus RTU Advanced Parameters
Parameter
Options
Default
Media
RS-232, RS-232 RTS/CTS, RS-485
RS-232
Data bits
Always 8
8
Stop bits
1, 2
1
Response timer
0…999,999,999 milliseconds
200
Broadcast Pause
0…999,999,999 milliseconds
200
Inter-char timeout
0…999,999,999 microseconds
0
RTS Pre-delay
0…999,999,999 microseconds
0
RTS Post-delay
0…999,999,999 microseconds
0
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