Prosoft-technology 5201-MNET-ASCII Manual do Utilizador descarregar pdf (Página 10)

Functional Overview MNET ♦ ProLinx Gateway

Driver Manual Modbus TCP/IP Interface Module

Page 10 of 78 ProSoft Technology, Inc.

September 1, 2010

1.1 Modbus TCP/IP (MNET) Port

The gateway supports a client connection on the TCP/IP network to interface

with processors (and other server based devices) using a user constructed

command list of up to 100 entries. The gateway’s internal database is used as

the source for write commands to the remote processors. Data collected from the

processors using read commands is placed in the gateway’s database.

Data in the gateway’s internal database is accessible for read and write

operations by any node on the network supporting the MBAP (Service Port 502)

or MNET (Service Ports 2000/2001) TCP/IP protocols. The MBAP protocol (Port

502) is a standard implementation defined by Schneider Automation and used on

their Quantum Processor. This open protocol is a modified version of the serial

Modbus protocol. The MNET protocol is an embedded Modbus protocol

message in a TCP/IP packet. The gateway supports up to five active server

connections on Service Ports 502, five additional active server connections on

Service Port 2000, and one active client connection.

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Prosoft-technology 5201-MNET-ASCII Manual do Utilizador Página 10