The Process Information Specialists
Delivering Value to Users of the OSIsoft® PI System™

About Us


Since 1998, we have been providing real-time solutions to customers in the utility, transmission, distribution, pulp and paper, water management, and pharmaceutical industries. Our mission is to help customers maximize the value of their existing assets through the prudent application of technology.

Our staff of professionals has familiarity with the OSIsoft PI System™ from many perspectives, not just as integrators, but also as system administrators, developers, and end-users. We understand the nuances of desgning, deplo​ying, and managing systems in organizations with as few as one s​erver to enterprises with fleets of servers.

Through our close working relationship with OSIsoft we are able to apply our knowledge to your problem using industry standards and best practices. Our staff includes several OSIsoft Certified PI System Infrastructure Specialists and PI System Installation Specialists to provide assistance in expanding and evolving the role of the PI System in meeting your strategic business goals and user information requirements.


Unlike other integration vendors, implementing and improving PI systems is our singular function, and doing this in the utility industry is our area of excellence. Being absolutely focused on OSIsoft system integration and customization sets DLL apart from all other vendors who merely dabble in this space. This provides our customers with unsurpassed efficiency in the execution of projects due to our constant involvement with the products and their everchanging capabilities.

Integration, Not Just Installation

We believe that server installation and system integration are not equal, and mere installation does not provide the customer with the best return on their software investment. Bring DLL's project experience in integrating PI with EMS, SCADA, DCS, substation IED's and data concentrators, LIMS, maintenance management, ERP, RDBMS, and other specialized systems to your team.

One Size Does Not Fit All

Our project methodology is simple: provide customers with what they ask for. We realize that customer needs come in different sizes and not all projects require feasibility studies, massive requirements documents, and twelve month project plans. We have the experience and skills to provide this level of detail when required, but it is not our goal to turn a three day job into a lifetime project.

Matching Technologies to Requirements

What is the PI Asset Framework, and what can it do for me? PI Event Frames at a combined-cycle plant, why? What can IT Monitor do for me that my IT departments tools aren't doing? We need to improve system reliability, availability, and implement a disaster recovery plan, what are our options? These, and others like them, are very common questions that we hear from customers around the world. Let our project experience help you unders​tand the technologies that are available, and which ones may best serve your business needs.

OSIsoft Product Application Experience

  • PI Data Archive
  • PI Asset Framework
  • PI Asset Analytics
  • PI Event Frames
  • PI Notifications
  • ​PI Coresight
  • PI ProcessBook
  • PI DataLink
  • OSIsoft IT Monitor
  • PI OPC DA and HDA Server
  • PI Batch
  • PI ACE
  • PI WebParts
  • PI Manual Logger
  • PI OLEDB Providers

PI Interface Experience

  • Bailey Infi90
  • Bailey semAPI
  • DNP3
  • PI-to-PI
  • PI UFL
  • Performance Monitor
  • ICCP
  • ABB/Ventyx SCADA
  • GE/Areva HabConnect
  • Emerson Ovation
  • Cybectec / Cooper SMP
  • Siemens Spectrum PowerTG
  • C37.118 Synchrophasor
  • Fast Fourier Transform


Direct Access Toolbox for PI Server


The Direct Access™ Toolbox for PI Server simplifies the integration of MATLAB® with data in users' PI System™ installations. Observed throughput of more than 150,000 floating-point events per second for data imported from LAN-based PI System installations will reduce the execution time of users' data-intensive algorithms. Data is imported as numeric vectors, not as cells, so it is immediately usable by existing MATLAB functions. The system works with both 32 and 64-bit Windows® installations. The functions and parameters use a syntax that is common and intuitive amongst PI-based applications.

Direct Access is a MATLAB toolbox that uses the OSIsoft™ PI SDK to read and write PI System data. Since the PI SDK™ is COM-based, and is the lowest level mechanism for communicating with PI, Direct Access provides fast performance by eliminating extra hops, data type conversions, recordset packing and unpacking, and cell2mat calls that are often required with OLEDB, ODBC, and Web service techniques.

This toolbox is valuable for existing users of the PI System that also use MATLAB to analyze their process data, as well as existing MATLAB users who require access to data that is stored in PI. Since the PI System is used in virtually every industry, the target users are the intersection of all OSIsoft and MathWorks customers.


  • ​Connects MATLAB to the PI System for reading, writing, editing, and deleting data
  • Supports compressed, sampled, summary, archived, and snapshot data
  • Returns vectors and matrices for primitive data types​​
  • Supports PI server-side data filtering options
  • Optimized for low overhead and fewer over-the-wire calls
  • Provides secure data access using standard PI configuration

Additional Information

​Click HERE to see the toolbox being demonstrated during the OSIsoft vCampus Live! 2012 ​Conference in San Francisco as part of the "Automated Pattern Recognition for PI Data Using MATLAB" presentation.

Click HERE for to download the product datasheet.​​​

ISO Market Data Downloaders


The Downloaders suite provides system administrators with the ability to configure routine scheduled downloads of market information from Independent System Operators (ISO) within the US, enabling pertinent data to be published to your PI System using the PI Universal File Loader (PI-UFL) interface.


  • Automatically downloads ISO and other web files to your local system for processing by the PI UFL interface
  • Runs as a Windows service or interactively from the command-line
  • Native support for forecast, hour-ahead, and day-ahead markets using "future" data tags when used with PI Data Archive 2015 R2 or later
  • Uses a plugin model to provide access to an extensible catalog of data sources, such as:
    • PJM (public data and eDataFeed)
    • ISONE
    • NYISO
    • CAISO
    • ​​NOAA Weather
  • Each plugin comes complete with the appropriate PI UFL interface settings file and tag configuration settings strategy to enable quick and easy data integration
  • The PI UFL interface itself must be licensed separately and directly from OSIsoft

Additional Information

Please contact us for further information regarding market data integration with your PI System.


The success of DLL Solutions, Inc. could not be fully realized without the relationships we have built and nurtured with our partners. We are proud to provide a mutual extension of the many outstand​ing software products and services that are provided by these partners to so many​ customers around the globe. It is our privilege to serve each of our own customers using the same quality and standards of professionalism as our partners who continue to prove that they are the "best in the business".

OSIsoft PI System Integrator MathWorks Connections Parter​​​ View DLL Solutions, Inc. profile on Ariba Discovery​​​

© Copyright 2002 - 2017, DLL Solutions, Inc.

All rights reserved.  Any rights not expressly granted herein are reserved.  No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, mechanical, photocopying, recording, or otherwise, without the prior written permission of DLL Solutions, Inc. Microsoft Excel, Microsoft .NET, and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

OSIsoft, the OSIsoft logo and logotype, PI Analytics, PI API, PI Coresight, PI for StreamInsight, PI ProcessBook, PI DataLink, ProcessPoint, PI Asset Framework, MCN Health Monitor, OSIsoft Virtual Campus, PI System, PI ActiveView, PI Advanced Computing Engine, PI AlarmView, PI BatchView, PI Manual Logger, PI Manual Logger Mobile, PI Notifications, PI OLEDB Enterprise, PI ProfileView, PI SDK, PI WebParts, RLINK, and RtPM Business Package are all trademarks of OSIsoft, LLC.

MATLAB and Simulink are registered trademarks of The MathWorks, Inc.

All other trademarks or trade names used herein are the property of their respective owners.

Contact Us

​​DLL Solutions, Inc.

12 Parmenter Road​, Unit B-6
Londonderry, NH 03053​

Phone numb​er: (603) 537-2088
Fax number: (603) 537-2099

Business hours

Monday-Friday: 8am - 5pm
Saturday-Sunday: Closed
Eastern US Time Zone



*Please note that most e-mail correspondence is handled within one business day.


Senior Application Engineer

DLL Solutions, Inc. has an opening for a salaried/full-time position of Senior Application Engineer to be located in Central New Jersey. If you are a well-organized self-starter with deep project experience involving the integration and application of the OSIsoft PI System in the fossil / nuclear / renewable generation, T&D, or similar industries - we invite you to take the next step toward joining our team.

A BS in Engineering is required, an MS in Engineering is preferred - plus 5 years of experience in PI System integration, migration, interfacing, data analysis, and troubleshooting. Excellent oral and written communication skills, project planning, requirements gathering, and the ability to travel up to 50% are also required.

Salary commensurate with experience and qualifications. Must be able to work in the US without sponsorship.

Send comprehensive resume, including professional references, via email to Reference SAE-NJ when applying.