ABB Ability™ Symphony® Plus Gateway Software

Real-time bi-directional server-client communication Symphony® Plus Gateway Software

(SGS) is a configurable component of Symphony® Plus that provides real-time bi-directional

communication between ModbusTCP devices and Symphony® Plus Controllers.

The Symphony® Plus Gateway Software (SGS) con

sists of two main components: Engineering Utilities

and Runtime software. The Engineering Utilities of

SGS provide a full function menu driven interface

that simplifies configuration for startup engineer

ing, commissioning and ongoing maintenance of the

ModbusTCP interface. With first time configura

tions, as only minimum parameters are required, en

gineering hours can be reduced by using the Quick

Config feature to generate the Mapping and Client

Definition tables. Individual interface points can

then be configured using the SGS menus.

The Runtime portion of SGS performs ModbusTCP

communications to other ABB equipment (e.g.

AC500. AC 800M) or 3rd party PLC’s over a 100Mbps

Ethernet network and remote wireless gateways.

The Symphony Plus Gateway Software is licensed

based on the number of function block outputs and

inputs the interface exchanges. SGS uses a mapping

database to define which Modbus data points are to

be exchanged between the Modbus Transfer Tables

and the Harmony function block in the controller’s

configuration. Harmony function blocks typically

contain more information than an equivalent Mod

bus point can support, making it necessary to map

more than one Modbus point to a single Harmony

function block. SGS employs the use of multi-map

ping to allow quality, alarms and values to be fully

defined within the ModbusTCP configuration.

On the ModbusTCP network, connections between

client and server devices are made through TCP

sockets. Depending on the module being used, SGS

can be configured to a maximum of 8 server connec

tions to foreign Modbus clients and 128 client con

nections to foreign Modbus servers.

Features and benefits

• Bi-directional communication in real-time with

Modbus devices

• Support for standard Modbus function codes and

exception codes

• Exception and cyclic data writes

• Fully tunable communication rates

• Diagnostics enable isolation and troubleshooting

of one connection

• Support of online configuration (change in function

blocks of the SGS points) with redundant controllers