Adding a Modbus RTU/ASCII Driver

Platforms: WIN XP / NT / 2000 / 95 / 98 / ME / CE

What is a Driver

Use this driver when communicating to MODBUS Serial devices using RTU or ASCII protocols.

·      Click Edit -> Comm Settings …

·      From the Supported Drivers
- select -
Modbus RTU/ASCII

·      Click Add…

·      Enter a Driver Name for the MB_1 driver.
Examples of a Driver Name
MB_1
MODRTU

·      Click Ok

Modbus RTU/ASCII Driver Properties

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·      Select a Port
Port Ranges COM1: to COM32:

·      Select the Baud Rate
Baud Rate = 300 -115200
Select the baud rate that matches the communication setting of the MODBUS Device.

·      Select the Parity
Parity = None, Odd, Even
Select parity that matches the communication setting of the MODBUS Device

·      Select the Flow
Flow = Hardware RTS/CTS, Modem RTS+timeout, None
Select the Flow that matches the communication setting of the PLC.
Normally FLOW = NONE

·      Select the DataBits
7 DataBits = ASCII
8 DataBits = RTU
Select the Databits that match the communication setting of the MODBUS Device

·      Select the StopBits
StopBits = 1 or 2
Select the StopBits that match the communication setting of the MODBUS Device

·      Click OK