Protocol And Supported Functions; Fieldbus Configuration - Modbus Plus; Modbus Plus Introduction - Weidmuller WI-GTWY-9 User Manual

WI-GTWY-9-xxx Wireless Gateway
Each device in a DeviceNet network is associated with an EDS file, containing all necessary
information about the device. This file is used by the network configuration tool during network
configuration. The EDS file can either be downloaded from the Weidmuller, Inc. website, or
found on the Product CD supplied with the module.

4.13.4 Protocol and Supported Functions

The WI-GTWY-9-xxx DeviceNet module is implemented according to the ODVA specification
for a communication adapter (profile no 12) and acts as a group two only server on the
DeviceNet network.
The WI-GTWY-9-xxx DeviceNet supports the following connection types:
• Explicit Messaging
• Polled I/O
• Bit-strobed I/O
• Change-of-state / Cyclic I/O
The WI-GTWY-9-xxx DeviceNet supports up to 512 bytes of input and 512 bytes of output data
via the DeviceNet interface. I/O Data exchange with a DeviceNet Scanner can be performed
using any of the above connection types. DeviceNet Scanner configuration towards the WI-
GTWY-9-xxx is possible via an EDS file.
DeviceNet is based on the Control and Information Protocol (CIP), which is also the framework
for both ControlNet and Ethernet/IP, to carry and exchange data between nodes. The WI-GTWY-
9-xxx supports the mandatory objects as well as some vendor specific objects. The mandatory
objects are the ones in the specification from ODVA. The following vendor specific objects are
implemented:
• I/O data input mapping object, Class A0h
• I/O data output mapping object, Class A1h
Since theses objects are the same as for Ethernet/IP, for the specification of these objects see
section '4.12.3 Ethernet/IP'. For further examples refer to the WI-GTWY-9-xxx DeviceNet
Application Note.
4.14 Fieldbus Configuration – Modbus Plus

4.14.1 Modbus Plus Introduction

Modbus Plus is a local area network system designed for industrial control and monitoring
applications. The network enables programmable controllers, host computers and other devices
to communicate throughout plants and substations. Modbus Plus is normally used in industrial
automation, to transfer fast data for motor controllers, MMI, I/O units and other industrial
equipment.
The WI-GTWY-9-xxx Modbus Plus module communicates according to the Modbus Plus
Protocol. This means that it can communicate with all Modbus Plus nodes that comply with this
protocol, but it does not necessarily mean that all services available in the Modbus Plus protocol
are supported.
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