Rockwell Low Cost PLC/RTU Solutions

Micro800-Control-Systems

Micro 800 PLC Product Range:

Applications of the Micro 800 PLC

The Micro 800 is ideal for a wide range of industrial applications, including:

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Industrial Automation

Manufacturing Systems

Energy Management

Building Automation

Water & Wastewater Treatment

Material Handling

Why the Micro 800 PLC is the Ideal Choice for ETH IP to Modbus Communication

Cost-Effective Integration

The Micro 800 eliminates the need for expensive gateways or additional hardware, providing a budget-friendly way to bridge Ethernet/IP and Modbus systems.

Native Modbus RTU & Modbus TCP/IP Support

Whether you’re working with legacy Modbus RTU devices or modern Modbus TCP/IP systems, the Micro 800 simplifies communication without extra components.

Built-In Ethernet/IP Connectivity

With a built-in Ethernet/IP port, the Micro 800 seamlessly integrates into modern industrial networks.

Compact & Scalable Design

Designed for small to medium-sized applications, the Micro 800 is perfect for space-constrained environments. Plus, its expandable I/O options ensure it can grow with your needs.

Easy to Program & Deploy

Rockwell’s Connected Components Workbench (CCW) software makes it simple to configure the Micro 800 for your specific communication requirements.

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DNP3 Protocol and Micro800 Series

Question:
Can I use the DNP3 Protocol with Micro800 controllers?

Answer:
Yes, the DNP3 protocol is supported in the following Micro870 controllers:

  • 2080-L70E-24QBBN
  • 2080-L70E-24QWBN

Previously, DNP3 capability was only available in MicroLogix 1400 controllers.

  • Key Features and Capabilities

    • Programming: Requires Connected Components Workbench software version 20.01.00 or later.
    • Advanced Capabilities:
      • Time-stamping of message packets.
      • Event reporting (transmitting bit changes and analog value changes outside a deadband).
      • Automatic logging of events during communication outages.
    • DNP3 Slave Implementation:
      • Micro870 controllers are Level 2 DNP3 slaves, offering a balance of simplicity and advanced features.

    DNP3 Capabilities in Micro870 Controllers

    • Secure Authentication: Supports Secure Authentication versions 2 and 5 (MicroLogix 1400 supports only SAv2).
    • Communication Ports: Supported via Serial (embedded and plug-in) and Ethernet ports.
    • Endpoint Types: Supports Listening, Dual, and Datagram-only endpoints.
    • Additional Features:
      • Master Address validation and Access Control.
      • Time Synchronization and Timestamping.
      • Unsolicited Response support.
      • Event-driven messages.
    • User-Friendly Configuration: Simplified compared to traditional file number mapping.
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How the Micro 800 Simplifies ETH IP to Modbus Communication

  1. Connect
    Use the built-in Ethernet/IP port to link the Micro 800 to your network.

  2. Configure
    Set up Modbus RTU or Modbus TCP/IP communication using Rockwell’s Connected Components Workbench (CCW) software.

  3. Communicate
    Enjoy seamless data exchange between Ethernet/IP and Modbus devices.

plc-panel

Benefits of Using the Micro 800 for ETH IP to Modbus Communication

  • No Additional Hardware Required
    The Micro 820, 850, & 870 supports Modbus natively, eliminating the need for costly gateways. Entry level pricing is only $298 ex gst for a Micro 820.

  • Reduced Downtime
    Easy setup and configuration mean your systems are up and running faster.

  • Future-Proof Design
    With expandable I/O options, the Micro 800 can adapt to your growing needs.

  • Trusted Brand
    Rockwell Automation is a global leader in industrial automation, ensuring reliability and performance.

Learn More

For detailed information on DNP3 configuration and setup, refer to the Micro830, Micro850, and Micro870 Programmable Controllers Publication 2080-UM002.

Rockwell guide

Rockwell Automation Selection Guides.

Frequently asked questions

What is the Micro800?

The Micro 800 range is designed for straightforward installation and maintenance. A single software suite supports the entire product family, offering tailored control solutions for cost-effective, standalone machinery. Customers can select only the features they require and customise their system with plug-in modules to meet specific application demands.

  • Micro 810
    These ultra-compact programmable logic controllers combine the functionality of smart relays with the advanced programming features of micro-PLCs. They include 12 I/O points, with 4 high-current relay outputs (8A), making them ideal for smart relay applications.

  • Micro 820
    Designed for small standalone machines and remote automation tasks, these controllers feature a compact design and support up to 36 I/O points. They come with built-in Ethernet, a microSD slot for data logging and recipes, and analogue I/O capabilities, providing versatile communication and I/O options.

  • Micro 830
    These controllers are built for standalone machine control applications requiring adaptable communication and I/O features. They support up to 88 I/O points, offering high-performance I/O, interrupt handling, and pulse train output (PTO) for motion control.

  • Micro 850
    Ideal for larger standalone machine control applications, these controllers provide enhanced communication and I/O capabilities. They support up to 132 I/O points, featuring high-performance I/O, interrupts, PTO motion control, embedded Ethernet, and expandable I/O options.

  • Micro 870
    Designed for large standalone machine control, these controllers offer extensive communication and I/O flexibility. They support up to 304 I/O points, with high-performance I/O, interrupts, PTO motion control, embedded Ethernet, and expandable I/O modules.

  • Micro 850 Expansion I/O
    These expansion modules enhance the capabilities of the Micro 850 controllers by increasing the flexibility of I/O count and type. The modules attach securely to the controller and support both DIN rail and panel mounting.

  • Micro Plug-in Modules
    These plug-in modules allow customers to customise their base controller to suit specific application needs. They extend the functionality of embedded I/O without increasing the controller's size and can enhance system capabilities through additional memory and clock modules.

What are the differences and similarities between a Micro810, Micro820, Micro830 and Micro850 controllers?
The biggest similarity between Micro810, Micro830, and Micro850 is the programming environment. All are programmed over USB using the Connected Components Workbench software and have similar programming capabilities.

The differences lie with special purpose hardware. Micro810 has a low profile, consumes less power and has special high current 8A relay outputs and embedded Core Smart Relay function blocks for relay replacement applications. Micro830 is higher performance and has embedded motion capabilities. Micro850 is similar to Micro830 but adds Ethernet/IP and expansion I/O for larger applications requiring from 50 to 132 digital I/O. All models (except for Micro810 12pt) support Plug-ins (but not all Plug-ins work with all models).

Micro820 is a hybrid of Micro810 and Micro830 and Micro850. It has a:

      • Ethernet and serial port
      • 2 plugin slots
      • micro SD card slot for program transfer, datalog and recipe management
      • inbuilt thermistor input, analog input and output terminal
      • support program download through USB with an optional 3.5-in remote LCD
      • It only come in 20 I/O points with AC and DC input model

        Do Micro800 controllers replace MicroLogix controllers?

        No. Micro800 and MicroLogix are complementary in that customers who value RSLogix 500 and the wide selection of RTU and Allen-Bradley communications protocols should buy MicroLogix.


      Customers who want Micro800 features such as motion planner, IEC programming, etc. should buy Micro800. MicroLogix controllers support more expansion I/O than Micro800.

 

Hardware Questions
  1. What are the power supply options to power the Micro800? How does the embedded power supply work for Micro810 and Micro830 controllers?
    Micro810 has an embedded 120/240VAC, 12/24VDC (for transistor outputs only) or 12VDC power supply (for relay outputs). The Micro800 Power Supply 2080-PS120-240VAC can also be used with Micro810 24VDC controllers if additional 24VDC power is required for inputs, HMI, etc. up to 40W.

    All Micro820, Micro830, Micro850 and Micro870 controllers are powered by an embedded 24VDC power supply. Generally for most machine control applications, the same 24VDC power supply as used for the 24VDC inputs and HMI can be used to power the controller for the lowest cost solution. For applications where 24VDC is not easily available or 24VDC is not properly regulated, a Micro800 Power Supply 2080-PS120-240VAC is available which optionally attaches to the left side of the Micro820/830/850/870 controllers and can supply enough power typically for the controller, up to 4 expansion I/O, Plug-ins, 24VDC inputs, and HMI up to 40W total.
  2. Is expansion I/O available for Micro800 controllers?
    Yes. Micro850 currently supports up to 4 2085 expansion I/O and Micro870 support up to 8 modules with a power supply modules used after the 4th one. 2085 expansion I/O is used with the Micro850/870 for cases where more digital and analog I/O is required or where higher performance analog I/O is required. 32-pt 24VDC input modules, 4-ch RTD/TC and high resolution analog are available.
  3. What is a Plug-In module?
    Plug-in modules are one of the key aspects of the Micro800 platform which is used to keep size and cost to a minimum while improving functionality. Users can customize the base Micro800 functionality by adding up to 5 plug-ins, such as: digital and analog I/O, communications, motion, and special functions such as add-on safety. In essence, the user can make his own special purpose PLC.

    Plug-ins are different from 2085 expansion I/O in that Plug-ins are directly inserted into the Micro800 motherboard so high performance data rates, interrupts, and tight integration with the Micro800 execution engine are possible. The tradeoff is limited size, limited power dissipation, and non-isolated analog. 2085 Expansion I/O takes up additional space but excels in supporting low cost, higher density I/O, isolated analog, and higher performance and higher power modules which won't fit into a Plug-in.
  4. What Communication options are available?

Embedded Communications Capabilities
Micro810 (12-pt) - USB with 2080-USB-ADAPTER
Micro810/830 - USB and Non-isolated serial port
Micro850 - USB, Non-isolated serial port and Ethernet/IP
Micro870 - USB, Non-isolated serial port and Ethernet/IP
* Serial Port can not be used as a programming port in release 1
* USB port can be used only for programming

Expansion Comms via Plug-Ins
Isolated Serial Port (RS-232/485)
DeviceNet Master/Salve (Master not supported by Micro810).

Protocols
Micro800 serial ports supports Modbus RTU (master/slave), ASCII/binary.
Now a few Micr800 catalog numbers support DNP3, please refer to: QA33059 - DNP3 Protocol and Micro800. Key one Water waste water applications
Note: For protocols such as PCCC, DH-485, DF1 Radio Modem, refer to MicroLogix.

  1. Why is there no battery?
    None of the Micro800 controllers require a battery to retain both the program and data. All controllers have flash memory to store the user program. For data, Micro810 uses a super capacitor to store the data for up to 1 week. Micro820/830/850/870 use FRAM memory technology to permanently store the data which eliminates the need for Lithium batteries, which can be a shipping and waste disposal problem. Eliminating batteries also simplifies maintenance and reduces downtime, which is especially important for remote RTU applications where maintenance is difficult.

    The only battery is the small non-replaceable battery in the backup memory plug-in with Real Time Clock. The battery is used to run the RTC.
  2. Does Micro800 support PID instruction and does it have Auto-Tuning?
    Yes. IPIDCONTROLLER instruction provides PID support with Auto-Tuning.
  3. Does Micro800 supports Motion Control using Pulse Train Outputs (PTO)? What's the difference between MicroLogix and Micro800 since MicroLogix also supports PTO?

Micro800 has an embedded motion planner that is based upon the PLCopen Motion instruction set and behavior, which greatly simplifies motion by allowing the user to focus on the motion application instead of programming. The physical interface to the steppers and servo drives is the same as MicroLogix 1400 (24VDC Pulse), although Micro800 has both sink and source output models for different regions of the world.

  1. I have an application today that uses MicroLogix 1100 and 1400 broad serial communications capabilities such as PCCC, DF1 Radio Modem, and DH-485. Can I use Micro800 instead?

Generally if you have an application that uses the broad communications capabilities of MicroLogix, you need to stay with MicroLogix. Micro800 is focusing on machine control and consequently focuses only on Modbus RTU Master/Slave for serial communications.

  1. What screwdriver is recommended?
    If only one screwdriver is specified which works for controller, I/O, Plug-ins and Power Supply, then it should be a 2.5mm non-flared flat blade screwdriver with a shaft length of at least 65mm. If an electrician's screwdriver then minimum 15mm of the tip must be clear of shaft insulation. For optimum screwdriver performance for each product refer to the individual specifications of the product.
  2. What wire gauge is acceptable?
    Refer to the installation manuals or wiring diagrams for each product. Generally for controllers, power supply and expansion I/O, up to 14 gauge is possible. For Plug-ins, up to 16 gauge is possible.
  3. Can I put more than 2 wires per terminal?
    All terminal blocks are designed to hold more than 1 wire as long as it meets the specifications such as being stranded and maximum wire gauge. Generally it is recommended to only put 1 wire per terminal and to use ferrules for best performance. Ferrules also are available which can contain more than 1 wire.

Current terminals blocks are all cage clamp. Are spring clamp type terminal blocks available?
For the controllers and expansion I/O with removable terminal blocks, spring clamp type is available but currently not from Rockwell Automation. All connectors are standard industrial connectors which can be sourced directly from the manufacturers' representative.

  1. What certifications does Micro800 have?
    cULus CL1 DIV2 Hazardous (UL1508 and CSA specification certified though UL), CE, and C-Tick. Micro800 is Marine certification ready but it will take at 6-12months after release to receive the certification. Micro800 is ATEX ready but will not be available at launch. Contact your local Micro800 product manager if you require ATEX.
  2. What about 12VDC and 24VAC support for battery and building applications?
    Power Supply: Micro810 has a 12VDC and 12/24VDC input power controllers available. For Micro810 24VAC and Micro830/850 24VAC and 12VDC power controllers, the 2080-PS12VDC-24VAC power supply will be available after initial launch.

    Inputs: Generally most Micro800 24VDC inputs also support 12VDC (but please refer to installation manuals for exact specifications). Similarly 24VAC inputs are generally supported by 24DC inputs but the input filter time must be set to 8ms or higher.
  3. Is Removal Insertion Under Power (RIUP) supported for Plug-ins, I/O, etc.?
    Generally RIUP is not supported for accessories such as Plug-ins and Expansion I/O. There are three exceptions2080-MEMBAK-RTC Plug-in for Micro830/850 series, 2080-MEMBAK-RTC2 modules for Micro830/850/870 series, and 2080-LCD for Micro810 series.

 

Software Questions
  1. Does Micro800 use the same programming software as MicroLogix?
    No, the Micro800 family is programmed with the Connected Components Workbench (CCW) software. CCW follows IEC1131-3 specification which is common for component PLCs.

    Basic version is free for download. Developer version is payable and includes more advanced debugging features.
  2. What can the Developer version of Connected Components Workbench (9328-CCWDEVENE, 95 list) do that the Standard version of Connected Components Workbench (download for free) cannot?
    The Developer version allows you to do advanced debugging (single-stepping, setting breakpoints), as well as run-time download (user logic mods). Controller simulation is planned for later versions. For more, please refer to: IN473 - Connected Component Workbench (CCW) Standard and Developer Differences.
  3. What can I do with Connected Components Workbench (CCW)?
    Connected Components Workbench software supports ladder diagram (LAD/LD), structured text (ST), and function block diagram (FBD). Ladder diagram is the most common language and is good for digital inputs and outputs for sequential control. Function Block Diagram is common for continuous, process control type of applications like temperature control. Structured Text is useful for arithmetic equations, replacement of BASIC and C language code, and motion control.
  4. What other products can be configured with Connected Components Workbench software?
    From controllers Connected Component Workbench programs only Micro800 processors. For terminals: Panelview 800 and PanelView Component operator interfaces are supported. In addition CCW configures Connected Component devices. For Release 1, it will support Micro800, PowerFlex 4/40/400 drives and PanelView Component operator interfaces.
  5. What are the operating system requirements for Connected Components Workbench at release?
    All depends of the version of the Connected Components Workbench. All details you can find in release notes: QA26787 - Connected Components Workbench (CCW): Release notes.