Tag Archives: PLC

PLC vs. DCS: What’s the difference?

Before we get into the differences of a PLC’s and DCS’s, we need to talk about what each of them are designed to do.

What is a PLC?

A PLC, or Programmable Logic Controller, is a computer that has been adapted to specifically meet the needs of any specific manufacturing process. These devices come in many different shapes and sizes, with many options for digital and analog I/O, as well as protection from high temperatures, vibration, and electrical noise. The invention of the PLC allowed computers to be streamlined into the industrial automation process.

A PLC can be a single device calculating and executing operations, or a rack of different modules may be used to meet whatever your automation system requires. Some of the additional components include processors, power supplies, additional IO, interfaces, and much more.  Every part works together to be able to run open or closed loop operations that are rated at high speed and high precision. Take a CNC machine for example; a PLC would be used to control positioning and motion, as well as torque control. These devices are popular because they are very inexpensive relative to the amount of power and how many hours you get out of them.

 What is a DCS?

A Distributed Control System is an automated control system that streamlines the functionalities of the various devices that are used throughout an entire work space. This type of system uses many different controllers to allow all the machining parts to talk to each other as well as computers that can input parameters and display information such as power usage, speed, and much more. These controllers are distributed geographically across a plant to allow for high-speed communication to the control room. When using different types of modules however, the system may require different communication standards such as Modbus and Profibus. DCS’s started coming to fruition throughout the 1960’s once the microcomputer was brought widespread into the market.

Then what exactly is the difference?

A PLC will probably be used to control a machine that isn’t too complex wheres the DCS can have total control of all the operations in an entire plant. The PLC is preferred in situations where the machine does not have to worry about meeting specific conditions inside the plant. These conditions typically involve operations that may need to stop or restart, as well maintaining precise temperatures. A DCS will be able to take advantage of all the aspects of an automated system, from the machines and sensors to the controllers and computers. An entire DCS is much more expensive than a few PLC’s, but each have their advantages in any given situation and certain automated systems will always require one over the other.

Visit MRO Electric and Supply’s website to see all of our available Programmable Logic Controllers. If we don’t have what you need listed on the site, contact us at sales@mroelectric.com or (800)691-8511 and we will be happy to help.

PLC Security

plc security

PLC Security

Programmable logic controllers, also known as PLCs, initially came about in the late 1960s. PLCs were designed to replace relay-based machine control systems in the major U.S. vehicle manufacturing space. The relay-based control systems were considered hard to use and were disliked amongst those in the automation and manufacturing in.

In 1968, Dick Morley of Bedford Associates in Massachusetts designed the Modular Digital Controller, later dubbed the Modicon. After the Modicon 084’s initiation into the world, there was no looking back to those relay-based control systems. Be sure to check out our article covering Modicon PLC history to learn more.

PLCs are user-friendly microprocessor-based specialty computers that carry out control functions, many of which are of high levels of complexity. They are engineered to endure harsh and strenuous situations such as in heated, cooled and even moist environments. Used for automation usually in the industrial electromechanical space, PLCs are computers that deal with the controlling of machinery, often on  the following:

  • factory assembly lines
  • power stations
  • distribution systems
  • power generation systems
  • gas turbines

PLCs are programmed using a computer language. Written on a computer, the program is then downloaded to the PLC via a cable. These programs are stored in the PLCs memory. The hard-wired logic is exchanged for the program fed by its user during the transition between relay controls to PLC. The manufacturing and process control industries have gotten to take advantage of PLC applications-oriented software since Modicon PLCs inception.

plc security
PLC Functions and Directions

PLCs use programmable memory in order to store particular functions and directions. Some functions and directions would include:

  • on control
  • off control
  • timing
  • sequencing
  • counting
  • arithmetic
  • data manipulation
PLC Types

Understanding the different types of PLCs will be very helpful when looking into PLC security.

The numerous types of PLCs can be organized into three principal categories:

  • Advanced PLC: Advanced PLCs offer the greatest processing power out of all of the PLC types. They feature a larger memory capacity, higher input/output (I/O) expandability, and greater networking options.
  • Compact Controller: Logic Controllers are increased intermediate level offerings with an increased set of instructions and a greater input/output (I/O) than a run-of-the-mill logic controller
  • Logic Controler: A logic controller is often referred to as a ‘smart relay’. They are generally straightforward to use and considered a good place to begin when becoming acquainted with PLCs. They are cost-effective for low input/output (I/O), slower speed applications.
PLC Security

As security concerns remain in many professional spaces including the factory automation space, becoming up-to-speed with the different types of PLC Security is imperative. By creating and implementing an effective strategy to remain secure, you will likely avoid issues, downtime, and setbacks. Understanding the different types of PLCs will be very helpful when looking into PLC security.

PLC Cybersecurity: How the control network is linked to the internet, as well as other networks. A handful of PLC issues could likely involve the following:

  • Incident response planning and plans;
  • Issues drafting and reviewing policies
  • Issues drafting and reviewing procedures
  • Retention of cybersecurity experts and vendors;
  • A need for preparation of a breach:
    • exercises
    • training
    • breach simulations
  • A need for cybersecurity insurance review and counseling
  • A demand for record management and information infrastructure;
  • Privacy risk management
  • Assessment of cybersecurity risk in mergers and acquisitions;
  • Payment Credit Industry (PCI) Compliance protocols
  • Vendor contract management protocols
  • Supply chain risk management

PLC Physical Security: Although PLC physical security differs from PLC cybersecurity, it is still important and should be prioritized when an individual or a company is undergoing breach simulations, training, and exercises. PLC physical security deals with:

  • correcting default passwords
  • ensuring only certified individuals are in the control system’s environment
  • limiting access to thumb drives and securing access

MRO Electric and Supply maintains a comprehensive stock of Modicon PLC parts, including the Modicon Quantum series. Also, feel free to check out our repair and core exchange programs to learn how to save.

Understanding Issues with Security
In order to create and implement training and procedures for staff, you must understand how issues with security occur.  Not all cybersecurity attacks occur from external hackers or scammers. In fact, experts believe that only an estimated 20% of all cybersecurity attacks are intentional and intended to be malicious. Whether you think it’s possible or not, an offended employee could indeed be your hacker. Almost always caused by software issues, device issues, and malware infections, cybersecurity seems straight-forward initially, until you dig into those fine, often overlooked details.

As many in the automation space may know, PLC cybersecurity wasn’t a thing a decade ago. These days, PLCs are connected to business systems through any run-of-the-mill network and aren’t separated from other networks that other automation equipment may also be on.  As time goes on, it’s becoming more and more common to see TCP/IP networking from a business system standpoint. By connecting via TCP/IP, data exchange, as well as more rational and scalable business decisions, is enabled.

PLC Security Factors:
  • Although it may not actually connect to the internet, a control system is unsafe. Contrary to popular belief, a modem connection could also experience intrusion and a hack.
  • Wireless networks, laptop computers, and trusted vendor connections could be other sources of connections in which people may be likely to overlook.
  • Keep in mind that the majority of IT departments are unaware of factory automation equipment, including CNCs, CPUs, PCBs, robotics parts and, last but not least, PLCs.
  • Piggybacking off of the last point, IT departments’ lack of experience with the aforementioned equipment, along with their lack of experience with industrial standards and scalable processes indicate that they should not be in-charge and responsible for a company’s PLC security. Nobody wants an annoyed employee to make inappropriate changes to a PLC’s communication highway.
  • Hackers do not necessarily need to understand PLC or SCADA to block PC-to-PLC communication. They absolutely do not need to understand a PLC or SCADA system to cause operational or programming issues.
  •  Often times, control systems, including ones that many PLCs integrate with, use Microsoft Windows, which is very popular amongst hackers.
  • Some PLCs crash simply by pinging an IP address, like what happened at the Brown’s Ferry Nuclear Plant, which is located in upstate Alabama. Since the incident in 2006, the plant has undergone numerous security, operational, and management improvements.

In conclusion, when a security breach occurs, regardless of the specifics, understanding that time is of the essence will help smooth over most incidents. Trusting who has access to a control systems environment and thumb drive is crucial. If someone has access to the control system environment and thumb drive, ensure they’re well-qualified and up-to-speed with their team and/or company.


How to maintain a PLC (Programmable Logic Controller)

How to maintain a PLC (Programmable Logic Controller)

As many of us know, PLCs (programmable logic controllers) are staples in the factory automation world. In order to have them running optimally and as efficiently as possible, routine maintenance is imperative. Generally, manufacturers produce PLCs to endure strenuous, unsterilized environments. By adhering to an adequate maintenance schedule, PLCs operating timeframe can be lengthened.

Protect your PLC

Always be on the lookout for corrosive and conductive contaminants that have the potential to become a detriment to a PLCs’ components. By completing visual inspections for black dust and blowing airborne particles from the PLC’s vicinity, you are lowering the likelihood of contamination.

Is power flowing?

A PLC will not operate correctly without adequate power. To avoid any operation bugs, remain vigilant of any surges or shorts.

Calibrate Analog Components

Always refer to the preventative maintenance schedule for any analog input device. Analog inputs need to be cleaned regularly and calibrated as accurately as possible.

Take EMI into consideration

EMI (electromagnetic interference) is known to cause horrible issues for PLCs without clearly indicating what the specific issue is or how to go about fixing it. To remain ahead of the game, many perform an audit of the local wiring to pinpoint potential EMI sources before they interfere with the operation of your PLC. Lower-level components and high-current wires often interfere with each other, which wiring designs must take into consideration.

Additional PLC Maintenance Tips

By creating a PLC maintenance checklist and adhering to it strictly, operating errors can likely be avoided. The space between the PLC and the machine it’s controlling should be minimal.

MRO Electric and Supply has new and refurbished Modicon PLC parts available here. We also offer repair pricing. For more information, please call 800-691-8511 or email sales@mroelectric.com.

Schneider Electric / Modicon PLC and HMI Batteries

Schneider Electric / Modicon PLC and HMI Batteries

MRO Electric and Supply has new and refurbished Schneider Electric and Modicon Quantum parts available now, and also offers repair pricing. For more information, please call 800-691-8511 or email sales@mroelectric.com.

Schneider Electric / Modicon PLC and HMI Batteries

Product Line Model Type Part Number Manufacturer
Lithium 3V
Duracell (DL2/3A)
(soldered connector)
Quantum 140XCP90000 Lithium 990XCP99000
Lithium 3V
990XCP98000 or Duracell (DL2/3A)
43502625 (soldered connector)
Lithium 3V
990XCP98000 or Duracell (DL2/3A)
43502625 (soldered connector)
Compact PC-O984-xxx Lithium 3.6V (long) “O” 60-0576-000 Eternacell (T04/41)
Lithium 3.6V (short) “A”
Saft (LS3)
PC-E984-2xx Maxell (ER3STC)
Lithium 3.6V
Tadiran (TL-5955)
Momentum 172xNN2xxx2 Alkaline “AAA” Commercially Available
Modicon Micro
Lithium 110XCP98000 Duracel (DL2/3A)
Capacitor 110XCP99000 (soldered connector)
Modicon 984 AM-C986-003
(2 cell pack)
Modicon 984 AM-C986-004
Modicon 984 AM-M907-1xx
Modicon 984 AM-M909-0xx
Modicon 984 AM-C921-xxx 60-0490-000
Modicon 984 PC-L984-x8x
Lithium 3.6V “AA”
Eternacell (T06141)
Modicon 984 PC-O984-x8x Maxell (ERGC#5)
Modicon 984 PC-E984-x8x Saft (LS6)
Modicon 984 PC-O984-455 Tadaran (TL-5104)
Modicon 984 PC-O984-351
Modicon 984 AM-C986-004
Modicon 984 AM-C996-80x
Modicon 984 PC-M984-23x
Modicon 984 AS-B984-1xx
Modicon 984 AM-S929-00x
Modicon 984 AS-B885-00x
Modicon 984 AM-O984-ATX 60-0490-000
Modicon 984 Rechargeable (Qty. 2) 60-0610-000
Modicon 984 100-865 (Qty. 3) 60-0595-000
Modicon 984 AM-O984-MCX 60-0582-000
Modicon 884
Modicon 884
Modicon 584 AS-506P-xxx Lithium (3 card) MA-0147-001
Modicon 584 AS-509P-xxx Lithium (4 card) MA-0147-002
Modicon 584 AS-M507-00x 60-0481-000
Modicon 584
3 Card Battery Pack
Lithium AS-5284-001
Alkaline AS-5284-002
Modicon 584
4 Card Battery Pack
Lithium AS-5378-002
Alkaline AS-5378-001
Modicon 484
Lithium MA-0147-001
Alkaline 60-0286-000
Modbus Multiplexer
Modbus Multiplexer NW-0278-000 60-0549-000
0085/0185 (Sharp)
0085/0185 (Sharp)
(with connector) PA-0254-000 Sharp
(without connector) PA-0493-000 (UBATN-5001-SCZZ)
Model 400
Lithium 3.6V “AA”
60-0515-000 Eternacell (T06141)
Model 450 29576-03688 Maxell (ERGC#5)
Model 600 (SqD Part #) Saft (LS6)
Model 650 Tadaran (TL-5104)
8052 MCM713
Alkaline “D”
Commercially Available
8005 Model 50
Ram Memory Pack
8005 MP1
8005 MP4
Battery Holder
(SqD Part#)
SCP1xx 8020 SMM115
8040 PCM-110 (SqD Part #)
(SqD Part #)
8009 Compact
Lithium 3V (Type BA1)
Sanyo (CR12600SE)
TDI Battery Co. (?)
Otte Controls
Symax 20
8884 SBP20
(SqD Part #)
all models
PanelMate PM0632400 (Qty. 3) 60-0595-000
PanelMate PA-0285-000
PanelMate MA-024M-000
TSX Premium TSXP57xxx Lithium 3.6V “1/2 AA” TSXPLP01 Saft (LS3)
TSX Micro TSXP37xxx Single TSXPLP101 Maxell (ER3STC)
TSX Micro Ten Pack
TSX Micro
Lithium 3V “Button” TSXBATM01
Panasonic (BR2325)
Single TSXBATM101
10 Pack
Lithium 3.6V “1/2 AA” TSXPLP01 Saft (LS3)
Single TSXPLP101 Maxell (ER3STC)
Ten Pack
Lithium 3V “Button” TSXBATM01
Panasonic (BR2325)
Single TSXBATM101
10 Pack
TSX 17
Lithium 3.6V “1/2 AA”
Saft (LS3)
Maxell (ER3STC)
(Soldered Connectors)
Lithium 3.6V “1/2 AA”
Saft (LS3)
(Soldered Connectors)
Series 7
TSX 27xx
2.6 V
AZ1 AQ 0006
2.4 Volt with minimum of 110 mAH
TSX P471x/P472x Shrink-wrapped cells
TSX RAM xx 8 Soldered on board
TSX AXM 171xx/182
TSX SCM 2xxx
Series 7
TSX P473xx/P474xx 3.6V
AZ1 AQ 0002
3.6 Volt with minum of 110 mAH
TSX P67xxx Shrink-wrapped cells
TSX 76 x Soldered on board
TSX P871/P872/P874xx
TSX P76 x
TSX P107xxx
TPMX P474xx
TPMX P674xx
TPMX P1074xx
TSX T407 x
TSX RAM xxx 16
TSX P87 30/310 3.6V (Qty. 3)

Modicon Quantum PLC Overview

The Modicon Quantum PLCs provide well-balanced CPUs able to provide leading performance from boolean to floating-point instruction.

  • Unity Pro programming software supports five IEC languages as standard: IEC Ladder (LD), Structured Text (ST), Function Block Diagram (FBD), Sequential Function Chart (SFC), and Instructional List (IL), as well as the Modicon LL984 language to facilitate installed base upgrades.
  • High-level multitasking system
  • Memory capacity up to 7 Mb using Personal Computer Memory Card International Association(PCMCIA) extensions.
  • Specially designed for process control applications with conformal coated modules and an extensive catalogue of partner modules
  • Safety processors and I/O modules to manage Safety Instrumented Systems (SIS).
  • Plug & Play high-performance Hot-Standby solutions with LCD keypad for local monitoring
  • Adheres to open standards for communications including Ethernet Modbus® TCP/IP, EtherNet/IP (the new ODVA standard for EtherNet/IP™ incorporates Modbus TCP/IP), Profibus and others.
  • Numerous built-in ports (USB port, Ethernet TCP/IP port with Web server, Modbus Plus and at least one Modbus serial port) on the front panel
  • In-rack connectivity to Profibus® DP
  • Embedded Ethernet Router
  • Increase the availability of your architecture by using Quantum Ethernet I/O modules (QEIO) that support deterministic Remote I/O (RIO)
  • The Modicon X80 I/O expands your architecture and easily integrates your distributed devices in the same network (such as HMI, variable speed drives, I/O islands…)
  • Supports the Highway Addressable Remote Transducer (HART), the protocol for sending and receiving digital information across analog wires between smart devices and a control or monitoring system

Choose performance
Offering a large range of processors, Modicon Quantum is ideal for complex processes. The power of its processors results in optimum cycle times, while integrating even more communication functions, diagnostics, memory flexibility and data storage. The Quantum Safety system is now available, certified by TÜV Rheinland, simple to use and ready to be integrated in your automated system.

More flexibility
Choose the best topology, daisy chain loop, ring, star, bus… for the design of your Ethernet architecture.

Higher availability
Hot-standby CPUs and daisy chain loop topology improve the availability of your process. In the event that the cable is broken, the recovery time is less than 50 ms for an entire Quantum Ethernet I/O architecture.

Visit our website for more information on Modicon Quantum modules or email sales@mroelectric.com.

Modicon Momentum PC Based PLCs

Modicon Momentum PLC
The small footprint and open architecture of the Modicon Momentum PLC product line make it extremely versatile for a variety of Unity™ Pro automation applications. Modicon Momentum PLC options and accessories include: I/O bases, processor adapters, option adapters and communication adapters that are interchangeable and snap together to deliver optimal flexibility throughout the control system life cycle.

The Modicon Momentum PLC offers:

  • IP 20 Monoblock I/O bases which provide the foundation for the rest of the Modicon Momentum control system and serve as the mounting base for communication adapters and processors. Over 30 I/O module types available: Analogue, Discrete, Multi-function, etc.
  • Processor Adapters:
    • Operate with a single local I/O module or in systems with up to 32 I/O modules
    • Built-in communication ports including, Ethernet Modbus™ TCP/IP or Modbus RS232/RS485 serial communication, USB and IO Bus
    • Perform functions including data acquisition, peer-to-peer communication, and I/O scanning. Embedded web pages enable the use of a standard web browser to read status and diagnostic information from the processor.
  • Communication Adapters snap into any of the I/O modules and include Modbus TCP/IP, Modbus™ Plus, FIPIO™, INTERBUS™, and PROFIBUS® DP.
  • The Modicon Momentum PLC also offers selected I/O bases, processors, and communication modules with conformal coating – ideal for applications with harsh or humid environments that require a small footprint.

Modicon Momentum Unity CPU
The Modicon Momentum Unity™ CPU allows the simple upgrade that helps you increase the capacity and efficiency of your legacy Modicon Momentum application in a cost-effective way. The Modicon Momentum Unity CPU enables you to standardize and manage your controllers on a single programming software, Unity Pro software. It delivers a low-cost and low-risk modernization path while protecting your previous investment.

Why you should modernize now.
Upgrading to the Modicon Momentum Unity CPU is the simplest modernization strategy for your legacy PLCs. Unite all your small, medium, and large controllers on the Unity Pro software platform with robust communications and state-of-the-art programming functions

  • Cost-effective – Preserve the existing Momentum I/O investment and import developed Modsoft™, Proworx™, or Concept™ application programs
  • Simple – Upgrade to a single, intuitive software suite to manage all controllers
  • Ready for the future – Embark on a clear path for future modernization with PlantStruxure integrated architecture

For more information on Modicon Momentum modules, please call 800-691-8511 or email sales@mroelectric.com.

modicon momentum
Modicon Momentum Modules

Timeline, CPUs and Programming of the Modicon PLC Series

The Modicon PLC Series has been around for almost 40 years at this point, from the 484 series to the M340 series. The timeline below lists the CPU part numbers, the years they were sold, and what they are programmed with. For more info you can visit our series page here or email sales@mroelectric.com.

Modicon 484
CPU Part Number: AS-C484-xxx
Actively Sold: 1977-1983
Programmed With: P190 programmer

Modicon 584
CPU Part Number: AS-584A-xxx, AS-584M-xxx, AS-584L-xxx
Actively Sold: 1979-1984
Programmed With: Modsoft, ProWorx Plus/Nxt/32 Software

Modicon 984 Chassis Mount
CPU Part Number: P1-984X-008, Px-984A-xxx, Px-984B-xxx
Actively Sold: 1985-1999
Programmed With: ProWorx Plus/Nxt/32 and Modsoft Software

Modicon 984 Slot Mount
CPU Part Number: PC-A984-3xx, PC-D984-xxx, PC-K984-xxx
Actively Sold: 1987-2006
Programmed With: ProWorx Plus/Nxt/32 and Modsoft Software

Modicon Compact 984
CPU Part Number: PC-A984-xxx, PC-E984-2xx
Actively Sold: 1991-2007
Programmed With: Modsoft, ProWorx Plus/Nxt/32, Concept software

Modicon Micro
CPU Part Number: 110CPU311xx, 110CPU411xx, 110CPU512xx, 110CPU612xx
Actively Sold: 1996-2006
Programmed With: Modsoft, ProWorx Plus/Nxt/32 software

Modicon Quantum
CPU Part Number: 140CPUxxxxx
Actively Sold: 1994 to present
Programmed With: ProWorx 32, Concept, Unity software

Modicon Premium
CPU Part Number: TPCX57xxxx, TSXP57xxxx
Actively Sold: 1998 to present
Programmed With: PL7 or Unity software

Modicon Momentum
CPU Part Number: 171CCC7xxxx, 171CCS7xxxx, 171CCC9xxxx
Actively Sold: 1998 to present
Programmed With: ProWorx, Concept software

Modicon M340
CPU Part Number: BMXP341000, BMXP342010, BMXP342020, BMX342030
Actively Sold: 2007 to present
Programmed With: Unity V3.0 software

The Modicon 984 Family of PLCs

The Modicon 984 family of PLCs  bring the high performance,
application flexibility, and programming compatibility of the 984 family to the small
controller market. As a controller in the 984 family, Compacts implement a common
instruction set for developing user logic, standard Modbus communication
functionality, and optional Modbus Plus communication capabilities.
The Compact Controllers share the following 984 processing architecture features:
– A memory section that stores user logic, state RAM, and system overhead in
battery-backed CMOS RAM and holds the system’s Executive firmware in
nonvolatile PROM or FLASH RAM
– A CPU section that solves the user logic program based on the current input
values in state RAM, then updates the output values in state RAM
– An I/O processing section that directs the flow of signals from input modules to
state RAM and provides a path over which output signals from the CPU’s logic
solve are sent to the output modules
– A communications section that provides one or more port interfaces. These
interfaces allow the controller to communicate with programming panels, host
computers, hand-held diagnostic tools and other master devices, as well as with
additional controllers and other nodes on a Modbus (or Modbus Plus) network
This architectural consistency allows the The Modicon 984 Family of PLCs to achieve machine compatibility with the other controllers in the family. This allows sequences of user logic created on a mid-range or high performance controller, such as a 984B or a
984-685 Controller,-to be relocated to a Compact. It also assures that user logic
generated for this small controller is upwardly compatible to larger 984(s). Thus, a
Compact can be easily integrated into a multi-controller network.
For more info you can visit our web page here or call 1-800-691-8511 or you can even email sales@mroelectric.com.

Modicon Quantum Interface Modules

Modicon Quantum Interface Modules

Modicon Quantum Interface Modules

The Modicon Quantum series has a variety of communication interface modules which are listed and described below.

RIO Modules (CRA/CRP)

–          Quantum RIO head and drop modules use a S908-based networking I/O configuration. Communication is done via single or dual coaxial cabling u to 15,000 feet away. This configuration supports a mix of the following product lines:

  • SY.MAX
  • 200 Series
  • 500 Series
  • 800 Series
  • Quantum I/O

When Quantum RIO is required, the Modicon Quantum interface modules controller may support up to 31 RIO drops. In an RIO configuration, an RIO head module is connected with a coaxial cable to RIO drop modules at each remote drop.

DIO Module (CRA)

–          Quantum DIO is implemented over a Modbus Plus network. The CPU or NOMs module may be the network head via their Modbus Plus ports. The Quantum DIO Modbus Plus drop adaptors are specifically designed to link Quantum I/O modules to the head via twisted pair shielded cable (Modbus Plus). The DIO drop modules also provide the I/O with power (maximum 3A) from a 24VDC or a 115/230VAC source. Each DIO network supports up to 63 distributed drops using repeaters.

Network Option Module (NOM)

–          Quantum NOM modules provide extended communication capabilities for the Quantum system within a Modbus Plus configuration.

Modbus Plus on Fiber Module (NOM)

–          Quantum Modbus Plus on Fiber modules provides connectivity to Modbus Plus nodes by fiber cable without fiber optic repeaters and allows the creation of a pure fiber optic network or a mixed fiber optic/twisted-pair network (with the use of a 490NRP254 Fiber Optic Repeater).

Ethernet TCP/IP (NOE) Modules

–          Quantum Ethernet TCP/IP modules make it possible for a Quantum controller to communicate with devices on an Ethernet network using TCP/IP – the de facto standard protocol. An Ethernet module may be inserted into an existing Quantum system and connected to existing Ethernet networks via fiber optic or twisted pair cabling.

SY/MAX Ethernet Modules (NOE)

–          Quantum-SY/MAX-Ethernet modules are Quantum CPU network option modules that can be placed in a Quantum backplane to connect to Quantum controllers to SY/MAX devices and applications.

MMS-Ethernet Modules (NOE)

–          Quantum-MMS-Ethernet modules are Quantum CPU network option modules that can be placed in a Quantum backplane to connect Quantum controllers to MMS devices and applications.

InterBus Interface Module (NOA)

–          The Quantum InterBus is the interface module to the InterBus bus. The InterBus bus is a Fieldbus network designed for I/O blocks and intelligent devices used in manufacturing. It offers a master/slave topology that permits deterministic I/O servicing over its 13 km twisted pair network.

LonWorks Modules (NOL)

–          Quantum NOL modules provide connectivity between a Quantum controller and a LonWorks network, based on Echelon’s LonWorks technology. The NOL module is offered in three models for different transceiver types, and supports three twisted-pair media types with different network topologies or data transfer speeds.

Profibus Interface Module (CRP)

–          Quantum Profibus module is the interface module to Profibus-DP networks. The interface modules use Type A, shielded twisted pair to join inline connectors, with or without service ports and bus terminators.

AS-I Interface Module

–          Quantum AS-i modules provide connectivity between a Quantum controller and AS-i networks. AS-i bus cable is an unshielded flat two-wire link on which communication and power are transmitted to connected devices. The media insulation is self-healing to accommodate junction block removal.

MRO Electric and Supply has new and refurbished Modicon Quantum products available. We also offer repair pricing. For more information, please call 800-691-8511 or email sales@mroelectric.com.

Modicon Quantum Overview: Power Supplies, CPUs, I/O Modules

Modicon Quantum

The Modicon Quantum system is a special purpose computing system with digital processing capabilities. Modicon Quantum is designed for real-time control in industrial and manufacturing applications in a module, expandable architecture employing the following modules.

–          Power Supply

–          CPU

–          I/O

–          I/O Network Interface

–          Intelligent/Special Purpose I/O

–          Simulator (XSM)

–          Battery

–          Backplanes

–          CableFast Cabling

Quantum Power Supplies are used to supply system power to all modules inserted into the backplane, including CPU modules, Interface modules, and I/O modules. Depending upon the system configuration, the option exists of using the power supply in three different modes. The three modes are:

–          Standalone: For 3A, 8A, or 11A configurations that do not require fault tolerant or redundant capabilities.

–          Standalone Summable: For configurations consuming more than the rated current of one supply, two summing power supplies can be installed on the same backplane.

–          Redundant: For configurations requiring power for uninterrupted system operation. Two redundant power supplies are required for redundancy.

The Quantum CPU is a module residing on the Quantum local I/O backplane. The CPU is a digitally operating electronic system, which uses a programmable memory for the internal storage of user interactions. These instructions are used to implement specific functions such as logic, process sequencing, timing, coupling, and arithmetic. These instructions allow control through digital and analog outputs, for various types of machines and processes.  The Quantum CPU serves as a bus master controlling the local, remote, and distributed I/O of the Quantum system.

Quantum I/O modules are electrical signal converters that convert signals to and from field devices to a signal level and format, which can be processed by the CPU such as limit switches, proximity switches, temperature sensors, solenoids, and valve actuators. All I/O modules are optically isolated to the bus, ensuring safe and trouble-free operation. All I/O modules are also software configurable.

MRO Electric and Supply has new and refurbished Modicon Quantum products available. We also offer repair pricing. For more information, please call 800-691-8511 or email sales@mroelectric.com.