Tech Notes

Encrypted SuiteLink Connection Cannot be Established

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AVEVA Communication Drivers, AVEVA Historian, AVEVA InTouch HMI, AVEVA System Platform & OMI

Cross-node encrypted SuiteLink requires both nodes to be joined to the same System Management Server (SMS) server. In some cases, even if SMS is properly configured, a system may encounter the following error and the encrypted SuiteLink connection will fail, even though a Troubleshooting Scan within the AVEVA Common Service Portal may return without errors.

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OI Server Diagnostics not Appearing on Remote Nodes

Within the Operations Control Management Console (OCMC, previously called the SMC or System Management Console), you are able to connect to a remote node within the Operations Interface Server Manager section and access the configuration of the OI Servers installed and running there. However, it is possible to encounter an issue where the configuration of the remote OI Servers does not appear within the OCMC. The root cause of this behavior is security settings that are part of newer versions of Windows.

This tech note will provide steps with some recommendations to resolve the issue.

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Using $Sys$UpdateTagInfo with ABCIP OI Servers

Occasionally, making modifications to the tags in a ControlLogix/CompactLogix PLC will result in the AVEVA ABCIP OI Server having one topic that is not showing the correct information. It may appear to be good data but it is reading the wrong tag data or the tag data may have bad quality.

If you encounter this issue, you may be able to resolve it by downloading a new copy of the tag database from the PLC to the OI Server. Toggling the $Sys$UpdateTagInfo item to “true” forces an update of the entire controller tag database.

This tech note provides two methods than can...

Adding Auto Reconnect Functionality to Device Integration Objects

When a Device Integration object gets disconnected from its data source (e.g. an AVEVA OI Server), it must be manually triggered to reconnect when the source becomes available again. This tech note will instruct you on how to set up an auto reconnect feature and add additional diagnostic information that will indicate the number of disconnects the object has experienced since it last went on scan.

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Interfacing InTouch HMI to N-TRON OPC Server

N-Tron series of managed and un-managed switches are bundled with an OPC-DA (v1.X) server that can collect network and switch diagnostics. These diagnostics can be interfaced into the InTouch HMI so that diagnostics can be visualized, historized or alarmed. This tech note describes the process of integrating these switch diagnostics via Wonderware OPCLink.

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How to create a connection between Wonderware Data Access Server (DA Server) and Matrikon OPC Explorer

The Wonderware Data Access Servers (in short: DA Servers) all have the ability to serve clients using three built in protocols: DDE, SuiteLink, and OPC. The Matrikon OPC Explorer is a free product from Matrikon (provider of many IO OPC Servers) and can be useful in verifying connectivity and displaying values when troubleshooting communications to a Wonderware DA

Server using OPC protocol. The way to connect to the different Wonderware DA Servers is the same, only the name of the server and the tags you are looking for may change. This document lists the steps necessary to connect to the...

Configuring passive PLC heartbeat tag in Wonderware InTouch to monitor communication throughput

At times it is helpful to notify operators that communication has been lost between the HMI and a PLC. This tech note shows one method that relies on continual updates from the PLC to reset a counter tag. If the counter tag increases past a configured alarm set point, then it will produce an alarm.

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Configuring the DDESuitelink Client Object in the ArchestrA IDE

This tech note details the procedure used to configure DDE (Data Dynamic Exchange) and Wonderware Suitelink client connections using Wonderware Application Server and the ArchestrA IDE (Integrated Development Environment). The DDESuiteLinkClient object available in Archestra IDE provides a client connection to DDE or Suitelink servers so that data can be read and written to external data sources such as a PLC (Programmable Logic Controller).

This tech note consists of three parts:

Part 1 - details the process of configuring and deploying a new instance of the $DDESuiteLinkClient template for communication with a data source
Part 2 - details testing of the...

How to configure Wonderware DASABCIP for unsolicited message handling

For certain classes of critical alarms, it may be best to allow the PLC (Programmable Logic Controller) to notify the data clients immediately rather than waiting for a polling interval to update the alarm point at the HMI (Human Machine Interface). For this type of event, certain Allen Bradley PLCs (i.e. ControlLogix family) have the ability to send unsolicited messages to clients. This tech note provides the procedure to configure a Wonderware DASABCIP topic to accept unsolicited messages.

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How to monitor and troubleshoot communication using Wonderware Client utility

When troubleshooting communications between your HMI and data source it can be useful to utilize the Wonderware Client (WWClient) utility to verify connection status and read values. This document lists the procedures necessary to install and use the WWClient utility to help troubleshoot communications.

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