Omron DR 170 14 manual Communication Protocols, Application Communications Protocols, SuiteLink

Klinkmann Automation Omron Ethernet DAServer 3

Microsoft Windows program capable of acting as a DDE, SuiteLink ™ or OPC client that can also coexist with FactorySuite ™ 2000 and great er.

Communication Protocols

The OMRON Ethernet Direct DAServer communicates with clients and PLCs using the following different communications protocols:

•Application communications protocols such as OPC, DDE and SuiteLink to communicate with clients located on either local or remote nodes.

•FINS message communications protocol to communicate with the Omron controllers over FA (Factory Automation) networks.

Important! This DAServer is compliant with the OPC Data Access (DA) 2.05 specification.

For more information about the DAServer architecture, see the Reference section.

Application Communications Protocols

The DAServer utilizes the following application communications protocols to communicate with the clients.

OPC

OPC (OLE for Process Control) is a non-proprietary set of standard interfaces based upon Microsoft’s OLE/COM technology. This standard makes possible interoperability between automation/control applications, field systems/devices and business/office applications.

Avoiding the traditional requirement of software/application developers to write custom drivers to exchange data with field devices, OPC defines a common, high-performance interface that permits this work to be done once, and then easily reused by HMI, SCADA, control and custom applications. Over the network, OPC uses DCOM (Distributed COM) for remote communications.

SuiteLink

SuiteLink uses a TCP/IP-based protocol and is designed specifically to meet industrial needs such as data integrity, high throughput, and easier diagnostics. This TCP/IP standard is supported on Windows NT and Windows NT-technology-based operating systems (for example, Windows NT, Windows 2000, and Windows XP).

SuiteLink is not a replacement for DDE, FastDDE, or NetDDE. The protocol used between a client and a server depends on your network connections and configurations. SuiteLink provides the following features:

•Value Time Quality (VTQ) places a time stamp and quality indicator on all data values delivered to VTQ-aware clients.

•Extensive diagnostics of the data throughput, server loading, computer resource consumption, and network transport are made accessible through the operating system’s performance monitor. This feature is critical for the operation and maintenance of distributed industrial networks.

•Consistent high data volumes can be maintained between applications regardless if the applications are on a single node or distributed over a large node count.

•The network transport protocol is TCP/IP using Microsoft’s standard WinSock interface.

Omron Ethernet DAServer Ver 1.x User Manual Rev 1.4 17014m14