Configure the Digi One IAP using IAprofiles Modbus profile: serial-connected master
Digi One IAP Family User Guide
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The network connection usually does not require configuration. The only exception is if the master
requires COM port redirection. In that case, the master is an application that resides on a PC, such as
a Microsoft Windows system, and communicates only with devices on COM ports.
Setup information
n To configure the serial port for Modbus ASCII or Modbus RTU, see Configure a serial-connected
slave: generic procedure.
n To set up a PC and the device server for COM port redirection using RealPort, see Set up
COMport redirection.
Modbus profile: serial-connected master
Use the Serial Connected Master profile to connect a master device using Modbus RTU or Modbus
ASCII to the serial port of the device server.
Configuration requirements
The serial port connection must be configured for the protocol required by the master, in this case
Modbus RTU or Modbus ASCII. If the remote slave supports TCP socket communication, which is the
case if the remote slave is connected to another device server, Digi recommends this option.
Modbus/TCP is the other supported network option. This master can be configured to control up to 8
slaves.
Setup information
n To configure the port for Modbus ASCII or Modbus RTU and the network for TCP socket
communication, see Configure a serial-connected master: TCP/UDP sockets.
n To configure the port for Modbus ASCII or Modbus RTU and the network for Modbus/TCP, see
Configure a serial-connected master: generic procedure.
DF1 profile: serial-connected slave
Use DF1 Serial-Connected Slave Profile to connect a slave device (or devices if multiple slaves are
connected) using the DF1 Full-Duplex protocol.
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