Software Toolbox Technical Blog

A Topic Variable is a flexible special OmniServer element that gives you the ability to define a device specific variable such as a Device ID at the OmniServer topic level.  This effectively makes your OmniServer protocol reusable for those devices using the same protocol, since you can now specify the value of the variable when creating the OmniServer topic instead of creating a protocol for each device with the value hard coded.

In this video blog, I show you how to get the most from your OmniServer by using topic variables with your protocol to reduce your engineering time and effort to create an OmniServer protocol.

In the automation and control world you need to know about problems immediately.  If problems are not recognized early enough, they can cause unexpected downtime, damage to machinery or environmental impacts.  In other words, these problems can cost you a lot of money.

Fortunately, these days most of us have 24/7 access to email or texting through their laptops and smart phones which has made receiving alarms in a timely fashion much easier than in the past.

In this third post of our “I Can Do That?” blog series, we’ll cover how to get alerts to problems ASAP and also share some specific use cases for email/SMS notifications using Cogent DataHub.

Do you need to log specific process data to a database or text file based on some predefined variable or condition? We typically refer to this concept as "conditional" or "condition-based" logging.  It sounds simple enough but without a plan, it can be a tricky task to implement.

In this post, I'll introduce you to the considerations involved with conditional data logging and cover how OPC Data Logger can easily be set up to log data based on a variety of conditions without a lot of headaches.

Do you need to directly connect data points or variables in different equipment, processes, or software? This concept is commonly referred to as ‘point-to-point bridging,’ and the DataHub bridging capability allows multiple data sources to communicate with each other in real time.

In this second post of our “I Can Do That?” blog series, we’ll help users like you get the most out of your DataHub by understanding the bridging feature in detail and how this feature can often be combined with other features to accomplish some very powerful automation tasks.

OPC has been around as an industry standard since 1996.  If you’ve been working in the space very long, you have probably heard all the different acronyms thrown around.  If you’re new, well there are different specifications in the OPC software interoperability standards that are used to meet different information integration needs.

In this first post of our “I Can Do That?” blog series, I’ll explore examples of the connections between different OPC standards we hear about from users, ways to address them using OPC Gateway software, and use cases highlighting solutions we’ve seen other users implement successfully.

A Register Number is a time-saving special OmniServer element that allows you to configure one item that is requesting the same type of memory or offset in a device instead of one item for each memory or offset location.

In this video blog, I show you how to get started using registers to more efficiently build an OmniServer protocol without having to manually create an item for every piece of data whenever possible.

It's common with OPC for users to not realize that it is the OPC client that typically defines how quickly the OPC server should poll or send requests to the underlying control devices and equipment the server is communicating with.

This blog post will discuss how important it is for an OPC tunneling solution to have some level of control over this frequency of polling in order to maximize efficient usage of your precious bandwidth.

As more and more companies are making the switch from OPC-DA to OPC-UA, it is becoming increasingly important to be able to troubleshoot OPC-UA communications.     One of the easiest ways to analyze the communication between an OPC-UA client and server is to use Wireshark.

This blog will cover step-by-step how to use Wireshark to troubleshoot communications between your OPC-UA client and server applications.