Overview; Modbus/Tcp; Profinet Io - ABB RETA-02 User Manual

Overview

Overview
The RETA-02 Adapter module supports the Modbus/TCP and
PROFINET IO network protocols. This chapter contains a short
description of the above protocols and the RETA-02 Adapter
module, a delivery checklist and warranty information.

Modbus/TCP

Modbus/TCP is a variant of the Modbus family of simple, vendor-
neutral communication protocols intended for supervision and
control of automation equipment. Specifically, it covers the use of
Modbus messaging in an Ethernet environment using the TCP/IP
protocols.
The implementation of the Modbus/TCP server in the RETA-02
module is done according to the Modbus/TCP Specification 1.0.
The supported Modbus commands are listed in chapter
Communication.
The Modbus/TCP protocol allows the RETA-02 module to be used
as an Ethernet bridge to control the drive. The RETA-02 module
supports eight simultaneous IP connections.
Further information can be obtained from www.modbus.org.

PROFINET IO

PROFINET IO uses traditional Ethernet hardware and software to
define a network that structures the task of exchanging data,
alarms and diagnostics with Programmable Controllers and other
automation controllers.
PROFINET IO can be thought as PROFIBUS on Ethernet.
PROFINET IO uses two different communication channels to
exchange data with programmable controllers and other devices.
The standard TCP/IP channel is used for parameterization,
configuration and acyclic read/write operations. The RT or Real
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Overview