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AutomationDirect is expanding the capabilities of its Productivity2000 PLC platform with a new group of I/O modules and software updates aimed at increasing control density while giving machine builders more flexibility in application development.

The latest additions include combination DC input and output modules, a 16-point solid-state relay output module, and isolated analog input modules. At the software level, AutomationDirect has added Structured Text support to Productivity Suite, alongside user-defined instruction libraries and a new Delta contact function for detecting changes between PLC scans.

The Productivity2000 occupies the middle position within AutomationDirect’s Productivity PLC family, between the compact Productivity1000 and the larger Productivity3000. The platform is designed around a micro-modular architecture, allowing engineers to build systems around the I/O requirements of individual machines rather than committing to a fixed hardware configuration.

That modular approach becomes particularly useful when panel space is limited. A machine may require a relatively small number of digital inputs and outputs but still need several different signal types, making efficient module selection important. The latest Productivity2000 additions address this issue by combining more functions into individual modules.

The new combination I/O modules place DC inputs and transistor or relay outputs on the same card. Depending on the configuration, engineers can select sinking or sourcing transistor outputs, while relay versions provide an alternative for applications involving different voltage and load requirements.

For machine builders, combining inputs and outputs can have a straightforward hardware benefit. Instead of allocating one slot to an input module and another to an output module, a combination module can accommodate both functions in a single position.

This can reduce the physical footprint of the I/O assembly and potentially lower hardware costs for smaller control systems. More importantly, it gives designers additional freedom when configuring machines where the available I/O count does not fit neatly into conventional input-only and output-only module combinations.

The Productivity2000 architecture is suited to this type of modular configuration because AutomationDirect states that the system does not impose module placement restrictions. Designers can therefore populate the base according to the application's I/O requirements without having to work around strict slot-balancing rules.

That flexibility can be useful in equipment such as packaging machines, conveyors, assembly stations, pump skids, material handling systems, and general-purpose OEM machinery. These applications frequently contain a mixture of discrete sensors, solenoids, contactors, actuators, and auxiliary control devices, making a compact mixed-I/O architecture attractive.

AutomationDirect has also added a 16-point solid-state relay output module to the Productivity2000 lineup. The higher channel count is intended for applications where many outputs need to be switched frequently and reliably.

Unlike electromechanical relays, solid-state relay outputs have no mechanical contacts that physically open and close during operation. This makes them particularly suitable for repetitive switching applications where contact wear can become a maintenance concern.

High-cycle automation equipment can place considerable demands on output devices. Machines that repeatedly actuate valves, indicators, heaters, or other loads may accumulate millions of switching operations over their service life. Solid-state switching can reduce the mechanical wear associated with conventional relay contacts and can also avoid contact arcing.

The 16-point configuration makes the technology more practical for installations with a relatively high number of switching channels. Rather than dedicating separate modules to a small number of solid-state outputs, engineers can consolidate more output points into a single Productivity2000 module.

The new analog modules address a different part of the automation system: accurate measurement of field signals.

AutomationDirect has introduced isolated analog input modules featuring 16-bit resolution and channel-to-channel isolation. These characteristics are important in industrial environments where analog signals may originate from devices operating at different electrical potentials.

Analog measurements can be particularly vulnerable to electrical noise, ground potential differences, and interference from nearby motors, drives, contactors, and switching equipment. Channel isolation helps separate individual signal paths and can reduce unwanted interactions between field devices.

For engineers working with pressure transmitters, process sensors, temperature instruments, flow measurement, or other analog devices, the additional isolation can provide a more robust interface between the field wiring and the PLC.

The 16-bit resolution provides a relatively fine measurement range, allowing the controller to distinguish smaller changes in an analog signal. The practical value of that resolution will depend on the selected signal range, field-device accuracy, wiring conditions, and application requirements, but higher-resolution inputs provide engineers with greater measurement granularity.

The new isolated models complement the existing Productivity2000 analog I/O range, which includes current, voltage, and temperature-oriented modules. Built-in OLED displays on Productivity2000 modules also provide local visibility into I/O information, which can be useful during commissioning and troubleshooting.

Hardware expansion is only part of the latest Productivity2000 update. AutomationDirect has also made a significant change to its Productivity Suite programming environment by adding Structured Text.

Structured Text is a text-based programming language defined within the IEC 61131-3 family of industrial controller programming languages. While Ladder Logic remains widely used for PLC applications, Structured Text is often more efficient when control logic involves mathematical calculations, loops, data manipulation, conditional algorithms, or larger blocks of repetitive logic.

Adding Structured Text gives developers another way to approach Productivity2000 applications without abandoning the existing programming environment. Engineers can use Ladder Logic for conventional machine sequencing and introduce Structured Text where text-based programming is more appropriate.

This mixed-language approach can be useful for modern PLC projects. A machine may have straightforward interlocks and sequencing that are easy to represent in ladder while simultaneously requiring calculations or data processing that would result in a much larger ladder program.

The change also makes the Productivity2000 environment more accessible to engineers who are accustomed to structured programming. As PLC applications increasingly incorporate data handling, advanced calculations, communications, and algorithmic control, text-based programming has become a more common part of industrial automation software.

AutomationDirect has paired the Structured Text addition with user-defined instruction libraries, giving developers a way to package reusable control logic and apply it across multiple projects.

For OEMs, reusable software components can have a direct impact on engineering efficiency. Once a proven motor-control routine, alarm-handling structure, valve sequence, or calculation function has been developed and tested, it can be incorporated into subsequent machine projects instead of being rebuilt from scratch.

Standardized code also helps engineering teams maintain consistency across different machines. When multiple equipment models share similar control functions, reusable instructions can reduce variations between projects and simplify long-term maintenance.

Another software addition is the Delta contact function, which is designed to detect when a condition changes between one PLC scan and the next. This provides a more direct method for identifying state transitions and edge conditions.

Detecting transitions is a common requirement in PLC programming. Engineers frequently need to distinguish between a signal that remains continuously active and an event that has just changed state. Without a dedicated mechanism, this often requires additional tracking logic to compare the current state with a previously stored value.

The Delta contact function simplifies that type of logic by providing a dedicated method for identifying changes between scans. This can make certain event-driven sequences easier to implement and can reduce the amount of supporting logic required in a program.

Taken together, the latest hardware and software additions show AutomationDirect continuing to develop the Productivity2000 as a flexible platform rather than simply adding isolated I/O products.

The combination of higher-density I/O and broader programming capabilities is particularly relevant to machine builders working under increasing pressure to reduce cabinet size while adding functionality. Modern machines often require more sensors, actuators, diagnostic signals, analog measurements, and communications without a corresponding increase in available panel space.

A mixed I/O module can address part of that problem at the hardware level, while reusable instructions and Structured Text can help reduce software complexity.

The strategy also places the Productivity2000 within a competitive segment of the PLC market where micro-modular PLCs, compact control platforms, and distributed I/O systems are increasingly used for OEM machinery. Competitors in this broader market include platforms from Siemens, Rockwell Automation, Mitsubishi Electric, Schneider Electric, and other industrial automation manufacturers.

The key distinction for Productivity2000 users is the combination of modular hardware, a relatively compact architecture, and AutomationDirect’s approach to software accessibility. Productivity Suite remains available as a free programming environment, removing a software licensing cost that can otherwise become a consideration when developing or maintaining multiple machine programs.

For smaller OEMs and system integrators, software accessibility can be just as important as hardware pricing. A control platform that allows engineers to develop, test, modify, and maintain programs without recurring programming-software costs can simplify project budgeting and reduce barriers when supporting machines in the field.

The new I/O modules also give existing Productivity2000 installations additional options for expansion. A machine that was initially configured around standard digital or analog modules may be able to accommodate new requirements with fewer hardware changes by selecting higher-density or combination modules.

That can be particularly useful during machine revisions. OEM equipment rarely remains static throughout its production life. A customer may request additional sensors, actuators, alarms, or process measurements after the original design has been released. Modular PLC hardware makes those changes easier to accommodate, provided sufficient system capacity remains available.

The introduction of isolated analog inputs is also timely as industrial equipment becomes increasingly connected to variable-speed drives, servo systems, process instruments, and other electrically noisy equipment. Maintaining clean signal paths is an important part of reliable analog control, especially when measurement accuracy affects closed-loop operation or process quality.

At the programming level, Structured Text provides another tool for handling the growing amount of logic that sits between conventional PLC sequencing and more software-oriented control tasks. The ability to combine languages within one project gives engineers greater freedom to select the most appropriate programming method for each function.

AutomationDirect’s latest Productivity2000 update therefore extends beyond a simple expansion of the I/O catalog. It addresses three practical engineering concerns at the same time: control-panel density, signal integrity, and programming flexibility.

For machine builders evaluating the Productivity2000, the new combination modules may be most useful where digital I/O requirements are mixed and panel space is constrained. The 16-point solid-state relay module is aimed more specifically at repetitive switching applications, while isolated analog inputs target installations where signal separation and measurement stability are priorities.

On the software side, Structured Text, reusable UDI Libraries, and Delta contact functionality provide additional tools for building and maintaining more sophisticated PLC applications.

The broader direction is clear: AutomationDirect is continuing to turn the Productivity2000 into a more capable micro-modular automation platform while keeping its core emphasis on flexible I/O configuration and accessible engineering tools.

For OEMs and integrators developing compact automated equipment, the latest release gives the Productivity2000 a wider range of options for building dense control systems without unnecessarily increasing cabinet size or software complexity.