ATI Technologies Q46-85 Manuale delle comunicazioni - Pagina 3

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1.1

General

Q46 Analyzers are available with four digital communication options. Profibus-

DP, Modbus-RTU, Modbus-TCP/IP, or Ethernet/IP. This manual applies only to

instruments supplied with the Ethernet/IP communication option. It is critical to

note that Ethernet/IP devices only communicate with other systems running the

Industrial Protocol of Ethernet. You cannot plug a Q46 into your office Ethernet

and expect to have the Q46 talk to your computer.

The discussion of standard Ethernet and Ethernet/IP is vast, and well

beyond the ability to discuss here in great detail. The documentation for

this option assumes working network knowledge by the user.

1.2

Ethernet/IP was first introduced in 2001, and is a highly developed and complete

protocol for an industrial Ethernet network solution. Intended for automation

applications, EtherNet/IP is a member of a family of networks that implement the

Common Industrial Protocol (CIP) at its upper layers of the standard ISO/OSI 7-

layer model. CIP defines the object structure, specifies the message transfer,

provides users with a unified communication architecture, and encompasses a

comprehensive suite of services for a variety of manufacturing automation

applications which include data, control, safety, and configuration.

In the CIP Protocol, every network device represents itself as a series of objects.

Each object is simply a grouping of the related data values in a device. The

identity object contains related identity data values called attributes. Attributes for

the identity object include the vendor ID, date of manufacture, device serial

number and other identity data.

The Q46 utilizes a gateway device inside the analyzer that maps an internal

Modbus data structure into the required Ethernet/IP data object. This is done to

maintain plug-and-play compatibility to all Q46 digital communication options.

Any communication option can be plugged into any Q46 for immediate

conversion to a new protocol.

Because this gateway device is part of the Q46 interface, the ID and device type

show up on the interface as the gateway device. However, the Q46 variation

type is mapped into the application data object as the last byte.

Part 1 – Ethernet/IP Description