Mitsubishi RS232/485/LAN Serial Communication Control Bedienungsanleitung PDF herunterladen (Seite 5)

2. Introduction

When your applicative software sends a serial command to the virtual port, this

command will be packaged in a TCP/IP frame and will be transmitted to the eWON.

Once these frames are received by the eWON, the serial command is extracted and

transmitted by the eWON serial port to the Device.

When the Device replies to the command on the serial link, eWON will package this

reply and transmit it back to the computer and the applicative software.

VCOM Protocols handled

eVCOM software handles several protocols:

1. Standard VCOM (RAWTCP, RFC2217):

These are the standard Virtual COM protocols.

• RAWTCP is an simple encapsulation of the Serial communication data inside

TCP frame

• RFC2217 is a complete handling of a serial port (data and control lines) through

a TCP stream

This Standard VCOM mode is available with eWON with Serial Port.

2. VCOM Modbus:

This mode is specific for Modbus communication. It converts ModbusRTU commands

in their ModbusTCP equivalents.

This VCOM Modbus mode is available with eWON with Serial Port.

3. VCOM MPI:

This mode is a specific implementation to do Remote Connection with Siemens S7-

300 PLC, S7-400 PLC and Siemens MPI Panels.

This VCOM MPI mode is available with eWON with MPI port.

eVCOM (Standard serial communications) Page 5/29

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Mitsubishi RS232/485/LAN Serial Communication Control Bedienungsanleitung Seite 5