PLC + HMI SCADA Sequencing

UCOS guarantees that your organization's sequencing procedures are implemented consistently throughout one or more projects.

Compare UCOS Sequencing to Traditional Systems (63K)

In UCOS, sequential control is built into reusable sequencing templates.

Each template contains all the instructions needed to manage a certain type of sequencing for pumps, valves, emergency shutdown, etc.

Once these sequencing templates are tested and certified, they can be used throughout a project or on multiple projects.

This library of templates enforces your organization's preferred procedures for sequencing – guaranteed.

If all your sequencing code is uniform, it is much easier to troubleshoot and maintain. In addition, pre-tested, pre-certified, uniform sequencing code is likely to be more reliable than code that is implemented inconsistently by multiple developers.

Compare UCOS to the way that traditional control systems handle sequential control:

Traditional Control Systems	UCOS
Different developers can code your organization's sequencing standards in different ways, thus leading to reliability and maintenance problems.	Sequencing templates guarantee that all sequencing is implemented uniformly.
The leading sequential control language, rung ladder logic, requires volumes of code and a long learning curve if you didn't write the code.	UCOS logic is highly visual. New engineers can see what's going on at first glance.
Sequential code is typically hardware-specific. If you change hardware, you have to recode the logic.	UCOS sequencing is hardware independent. If you change the hardware, you don't have to change the code.
PLCs can be expensive.	UCOS logic runs on smaller, less-expensive PLCs or on cost-effective industrial computers.
PLCs and rung ladder logic are not designed to handle regulatory control.	UCOS and its controllers handle sequential, discrete, and regulatory control with equal ease.

For more about how UCOS implements discrete control concepts, see the Using Templates page.

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