# PLC (Programmable Logic Controllers) **URL:** https://forumautomation.com/c/plc-programmable-logic-controllers/6.md?page=1 [Latest](https://forumautomation.com/latest.md) · [Categories](https://forumautomation.com/categories.md) · [Tags](https://forumautomation.com/tags.md) **Page:** 2 --- ## [List The Three Basic Elements Of Rack/Slot-Based Addressing](https://forumautomation.com/t/list-the-three-basic-elements-of-rack-slot-based-addressing/11910)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 0\ **Last updated:** [March 27, 2024, 12:53pm UTC](https://forumautomation.com/t/list-the-three-basic-elements-of-rack-slot-based-addressing/11910 "2024-03-27T12:53:48Z")
List The Three Basic Elements Of Rack/Slot-Based Addressing Rack/slot-based addressing is a method commonly used in industrial automation and control systems for identifying the physical location of modules or compon… --- ## [PLC ladder logic for Level controlling](https://forumautomation.com/t/plc-ladder-logic-for-level-controlling/2609)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 9, 2017, 1:31pm UTC](https://forumautomation.com/t/plc-ladder-logic-for-level-controlling/2609 "2017-11-09T13:31:00Z")
PLC ladder diagram logic program can be implemented easily by knowing the logic of the operation. Process: Process logic for level measurement is simple to know. There will be two sensors low-level sensor and high-le… --- ## [Counters in PLC ladder diaghram](https://forumautomation.com/t/counters-in-plc-ladder-diaghram/2745)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 29, 2017, 7:39pm UTC](https://forumautomation.com/t/counters-in-plc-ladder-diaghram/2745 "2017-11-29T19:39:48Z")
Counters are PLC instructions that either increment or decrement or decrement the integer value when the input line make True from False. The counter which increment value is known as Up counters and Down counters decrem… --- ## [How to clear faults in Micrologix 1400 PLC](https://forumautomation.com/t/how-to-clear-faults-in-micrologix-1400-plc/8558)
**Author:** [@ashlin](https://forumautomation.com/u/ashlin)\ **Replies:** 0\ **Last updated:** [August 25, 2020, 3:44pm UTC](https://forumautomation.com/t/how-to-clear-faults-in-micrologix-1400-plc/8558 "2020-08-25T15:44:16Z")
How to detect a faulty PLC PLC’s are used in many industrial applications and these PLC’s would be connected to machines. We can detect if a PLC is working or not by checking the machine if the machine is not working th… --- ## [What is PLC Sinking and Sourcing? What is the difference between them? Sinking vs Sourcing in PLC](https://forumautomation.com/t/what-is-plc-sinking-and-sourcing-what-is-the-difference-between-them-sinking-vs-sourcing-in-plc/913)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [August 23, 2024, 4:28am UTC](https://forumautomation.com/t/what-is-plc-sinking-and-sourcing-what-is-the-difference-between-them-sinking-vs-sourcing-in-plc/913 "2024-08-23T04:28:48Z")
There are three popular types of output (Digital Output) cards. 1.Relay 2.Sourcing 3.Sinking. Relay cards are very easy to interface but suffer from the mechanical limitation of low-speed operation and limited lifespan… --- ## [Allen bradley Variable frequency drives](https://forumautomation.com/t/allen-bradley-variable-frequency-drives/438)
**Author:** [@naveed1992](https://forumautomation.com/u/naveed1992)\ **Replies:** 0\ **Last updated:** [June 5, 2015, 11:44am UTC](https://forumautomation.com/t/allen-bradley-variable-frequency-drives/438 "2015-06-05T11:44:09Z")
We have Allen Bradley VFD CAT1336F-B050-AN-EN. We are facing problem that when we give RUN command from HMI, then drive card 1336F-MCB-SP1K shows that drive is running by turning ON RUN (GREEN) LED, but on HMI drive rema… --- ## [FAT procedure for PLC panel:](https://forumautomation.com/t/fat-procedure-for-plc-panel/7420)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 14, 2019, 11:22am UTC](https://forumautomation.com/t/fat-procedure-for-plc-panel/7420 "2019-11-14T11:22:10Z")
Introduction: FAT (Factory Acceptance Test) is carried out for every instrument before the final installation, according to the standard IEC 61511. The FAT process involves testing the machinery during and after the … --- ## [Importance of latch and unlatch logic in PLC ladders](https://forumautomation.com/t/importance-of-latch-and-unlatch-logic-in-plc-ladders/2629)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 11, 2017, 8:18pm UTC](https://forumautomation.com/t/importance-of-latch-and-unlatch-logic-in-plc-ladders/2629 "2017-11-11T20:18:37Z")
The output latch (OTL) instruction is a retentive output instruction that is used to maintain, or latch, an output. If this output is turned on, it will stay on even if the status of the output logic that caused the outp… --- ## [Control of Escalators -PLC Program](https://forumautomation.com/t/control-of-escalators-plc-program/3992)
**Author:** [@areejsidhik](https://forumautomation.com/u/areejsidhik)\ **Replies:** 1\ **Last updated:** [August 12, 2024, 1:35pm UTC](https://forumautomation.com/t/control-of-escalators-plc-program/3992 "2024-08-12T13:35:55Z")
We have all seen escalators at shopping malls,airports,etc .Without any further a due let’s see how we can program escalators using PLC Operation (1)Let’s assume that the escalator does not move until someone appro… --- ## [How to upload Siemens PLC program from PLC to Computer?](https://forumautomation.com/t/how-to-upload-siemens-plc-program-from-plc-to-computer/971)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [April 9, 2016, 1:01am UTC](https://forumautomation.com/t/how-to-upload-siemens-plc-program-from-plc-to-computer/971 "2016-04-09T01:01:21Z")
Uploading from PLC Program and Hardware configuration from PLC to PC procedure - Siemens SIMATIC MANAGAER Step By Step Procedure 1.Create a new project. 2.Then Go to following menu PLC\>Upload station to PG… 3.… --- ## [How to configure PID controller in Siemens PLC?](https://forumautomation.com/t/how-to-configure-pid-controller-in-siemens-plc/2537)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 30, 2017, 5:13pm UTC](https://forumautomation.com/t/how-to-configure-pid-controller-in-siemens-plc/2537 "2017-10-30T17:13:13Z")
Open TIA portal on your computer. Open the project view and start your PLC program. Open your project tree \> click the Program block \> select the ‘Add new block’ \> Select Organization Block \> Select cyclic i… --- ## [PLC - Hardware and Software architecture](https://forumautomation.com/t/plc-hardware-and-software-architecture/4406)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 17, 2018, 2:21pm UTC](https://forumautomation.com/t/plc-hardware-and-software-architecture/4406 "2018-08-17T14:21:37Z")
Hardware Architecture of PLC: PLC systems are available in many hardware configurations, including from a single vendor, to meet a variety of customer requirements and affordability. Programmable logic controllers are pu… --- ## [What is an SF and BF on a PLC module](https://forumautomation.com/t/what-is-an-sf-and-bf-on-a-plc-module/9235)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [March 9, 2021, 10:52am UTC](https://forumautomation.com/t/what-is-an-sf-and-bf-on-a-plc-module/9235 "2021-03-09T10:52:27Z")
What are SF&BF on a Siemens PLC module --- ## [Allen Bradley PLC Processor Memory Organization](https://forumautomation.com/t/allen-bradley-plc-processor-memory-organization/3271)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 12, 2018, 5:46pm UTC](https://forumautomation.com/t/allen-bradley-plc-processor-memory-organization/3271 "2018-03-12T17:46:43Z")
Memory organization takes into account the way a PLC divides the available memory into different sections. The memory space can be divided into two broad categories: program files and data files. Program flies: Progra… --- ## [What is Scan Time in PLC and what are the types?](https://forumautomation.com/t/what-is-scan-time-in-plc-and-what-are-the-types/9666)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 29, 2021, 11:39am UTC](https://forumautomation.com/t/what-is-scan-time-in-plc-and-what-are-the-types/9666 "2021-07-29T11:39:53Z")
What is Scan Time? Each control system takes some time to implement. Similarly, PLCs also take time to perform a task. Simply put, PLCs have three main components: Input modules, Output modules, and Processor (CPU). Th… --- ## [PLC status bits for Allen-Bradley Control- Logix PLCs](https://forumautomation.com/t/plc-status-bits-for-allen-bradley-control-logix-plcs/3103)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [February 6, 2018, 6:53pm UTC](https://forumautomation.com/t/plc-status-bits-for-allen-bradley-control-logix-plcs/3103 "2018-02-06T18:53:47Z")
What is a Status register? A status register is a hardware register which contains the information about the status of the processor. It is a collection of flags bits in a Programmable status word. Status memory allows… --- ## [Difference between PLCs and Personal computer](https://forumautomation.com/t/difference-between-plcs-and-personal-computer/2648)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 14, 2017, 7:39pm UTC](https://forumautomation.com/t/difference-between-plcs-and-personal-computer/2648 "2017-11-14T19:39:43Z")
PLC: Operates in industrial enviroment PLC is programmed in relay ladder logic Has no keyboard, CD drive, monitor, or disk drive Has communication ports and terminals for input and output devices PC: … --- ## [Grounding of PLC System](https://forumautomation.com/t/grounding-of-plc-system/3174)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [February 21, 2018, 5:12pm UTC](https://forumautomation.com/t/grounding-of-plc-system/3174 "2018-02-21T17:12:38Z")
What is grounding? Proper grounding is an important safety measure in all electrical installations. Grounding or earthing is reffered as connecting the electrical equipment body with earth. PlC Grounding The authori… --- ## [What are the disadvantages of PLC](https://forumautomation.com/t/what-are-the-disadvantages-of-plc/10032)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [December 2, 2021, 3:31am UTC](https://forumautomation.com/t/what-are-the-disadvantages-of-plc/10032 "2021-12-02T03:31:28Z")
Explain the disadvantages of PLC --- ## [Whats is PLC?](https://forumautomation.com/t/whats-is-plc/299)
**Author:** [@ajmal\_m\_sali](https://forumautomation.com/u/ajmal_m_sali)\ **Replies:** 2\ **Last updated:** [April 25, 2023, 9:24am UTC](https://forumautomation.com/t/whats-is-plc/299 "2023-04-25T09:24:33Z")
PLC (Programmable Logic Controller) PLC or Programmable Logic Controller Is a small digital computer Embedded on a control system in order to get easy access in automation. It is typically used In the industrial electro … --- ## [An Overview of SIEMENS PLC Address Mapping](https://forumautomation.com/t/an-overview-of-siemens-plc-address-mapping/9069)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [January 11, 2021, 9:18am UTC](https://forumautomation.com/t/an-overview-of-siemens-plc-address-mapping/9069 "2021-01-11T09:18:52Z")
SIEMENS Address Mapping We can do SIEMENS S7 mapping by two methods. They are 1)Direct Addressing 2)Indirect Addressing The widely used form of addressing in SIEMENS S7 PLCs is direct and symbolic. The examples for d… --- ## [PLC Selection criterias](https://forumautomation.com/t/plc-selection-criterias/4383)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 14, 2018, 5:29pm UTC](https://forumautomation.com/t/plc-selection-criterias/4383 "2018-08-14T17:29:05Z")
Choosing a PLC or Controller for your Process is very important as it helps in Cost optimization. To determine the most suitable PLC to be used in the automation task, there are several basic considerations to be made: … --- ## [Types of programming languages in PLC](https://forumautomation.com/t/types-of-programming-languages-in-plc/2564)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 3, 2017, 7:40pm UTC](https://forumautomation.com/t/types-of-programming-languages-in-plc/2564 "2017-11-03T19:40:32Z")
There are 5 programming languages associated with PLC, ladder diagram, functional block diagram, sequential function chart, instruction list and structured test. Ladder diagram: A graphical depiction of a process wit… --- ## [Basic ladder diagram logic functions](https://forumautomation.com/t/basic-ladder-diagram-logic-functions/2518)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 26, 2017, 6:03pm UTC](https://forumautomation.com/t/basic-ladder-diagram-logic-functions/2518 "2017-10-26T18:03:59Z")
Ladder diagram logic is a rule-based language, where rule gets executed sequentially in a continuous loop. It is suited where binary variables are required and where interlocking and sequencing of a binary is the primar… --- ## [A Cheap PLC For Educational Purposes](https://forumautomation.com/t/a-cheap-plc-for-educational-purposes/300)
**Author:** [@auto](https://forumautomation.com/u/auto)\ **Replies:** 6\ **Last updated:** [July 14, 2016, 6:27pm UTC](https://forumautomation.com/t/a-cheap-plc-for-educational-purposes/300 "2016-07-14T18:27:16Z")
Hello everyone, I’ve actually just got a new job in instrumentation and to prepare I am wanting to swat up on PLC because it’s something I’ve had nothing to do with in the past. I really am a beginner and I don’t want t… --- ## [How to convert SLC 500 or PLC-5 logic to RSLogix 5000?](https://forumautomation.com/t/how-to-convert-slc-500-or-plc-5-logic-to-rslogix-5000/933)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [March 30, 2016, 12:40am UTC](https://forumautomation.com/t/how-to-convert-slc-500-or-plc-5-logic-to-rslogix-5000/933 "2016-03-30T00:40:21Z")
Convert SLC 500 or PLC-5 logic to RS Logix 5000 with Rockwell Automation tool. The Utility name is Translate PLC 5 SLC 2.0.This free tool can be downloaded from the following link. http://rockwellautomation.custhelp.co… --- ## [Free online PLC training](https://forumautomation.com/t/free-online-plc-training/4791)
**Author:** [@rajeena](https://forumautomation.com/u/rajeena)\ **Replies:** 0\ **Last updated:** [September 29, 2018, 3:51pm UTC](https://forumautomation.com/t/free-online-plc-training/4791 "2018-09-29T15:51:39Z")
Free online PLC training PLC(programmable logic controller) is a digital computer used for automation of electromechanical processes in plants. The PLC is designed for multiple inputs and outputs arrangements, so we can … --- ## [What is a ladder logic and what is ladder logic diagram in PLC](https://forumautomation.com/t/what-is-a-ladder-logic-and-what-is-ladder-logic-diagram-in-plc/8496)
**Author:** [@ashlin](https://forumautomation.com/u/ashlin)\ **Replies:** 0\ **Last updated:** [July 31, 2020, 1:08pm UTC](https://forumautomation.com/t/what-is-a-ladder-logic-and-what-is-ladder-logic-diagram-in-plc/8496 "2020-07-31T13:08:28Z")
What is ladder logic The ladder logic is a logical programming language that is used to program a PLC. Mostly a ladder logic is based on the following logic functions AND, OR, Exclusive OR, inclusive OR. Ladder logic is… --- ## [Step-by-Step Guide to PLC Fault Diagnosis and Troubleshooting](https://forumautomation.com/t/step-by-step-guide-to-plc-fault-diagnosis-and-troubleshooting/4054)
**Author:** [@areejsidhik](https://forumautomation.com/u/areejsidhik)\ **Replies:** 1\ **Last updated:** [August 9, 2024, 3:32pm UTC](https://forumautomation.com/t/step-by-step-guide-to-plc-fault-diagnosis-and-troubleshooting/4054 "2024-08-09T15:32:55Z")
1.TROUBLESHOOTING GROUND LOOPS A ground loop condition occurs when two or more electrical paths exist on a ground line. For example, in the Figure, the transducers and the transmitter are grounded in the chassis (or de… --- ## [How to factory reset a Siemens S7-1200 PLC?](https://forumautomation.com/t/how-to-factory-reset-a-siemens-s7-1200-plc/2627)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 11, 2017, 6:24pm UTC](https://forumautomation.com/t/how-to-factory-reset-a-siemens-s7-1200-plc/2627 "2017-11-11T18:24:02Z")
Connect the Ethernet cable between the PLC and the S7-1200 PLC. Go to project tree \> Device access \> Select your Ethernet card \> Select your PLC from the list If your PLC doesn’t show up there. Double click the Up… --- ## [How to unlock siemens S7 libraries / block?](https://forumautomation.com/t/how-to-unlock-siemens-s7-libraries-block/1606)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [December 29, 2016, 4:27am UTC](https://forumautomation.com/t/how-to-unlock-siemens-s7-libraries-block/1606 "2016-12-29T04:27:06Z")
S7 can opener is a small application which will help you to unprotect blocks in Siemens S7 PLC. Some of the third party vendors protect the blocks in PLC program for protecting their intellectual property. When u try to… --- ## [Troubleshooting PLCs](https://forumautomation.com/t/troubleshooting-plcs/3660)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [May 21, 2018, 4:06pm UTC](https://forumautomation.com/t/troubleshooting-plcs/3660 "2018-05-21T16:06:28Z")
In the case of a PLC failure, you must use a careful and systematic approach to solve the system problem. PLCs are relatively easy to solve because the control program can be displayed on a monitor and can be viewed in … --- ## [What is process Scan & process time in PLC?](https://forumautomation.com/t/what-is-process-scan-process-time-in-plc/3666)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [May 22, 2018, 9:54am UTC](https://forumautomation.com/t/what-is-process-scan-process-time-in-plc/3666 "2018-05-22T09:54:10Z")
Process scan: When a PLC executes a program, it must know, in real time, when external devices that control a process are changing. During each operating cycle, the processor reads all the inputs, takes these values an… --- ## [PLC maintenance Checklist](https://forumautomation.com/t/plc-maintenance-checklist/6022)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 5, 2019, 8:28pm UTC](https://forumautomation.com/t/plc-maintenance-checklist/6022 "2019-03-05T20:28:38Z")
Like all types of equipment, PLC should also be regularly maintained. Maintenance for the PLC system consists simpler steps and following it can make a large change. Maintenance of the PLC system shall be performed durin… --- ## [Learn PLC programming with a Free Android application](https://forumautomation.com/t/learn-plc-programming-with-a-free-android-application/1290)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [August 28, 2016, 9:26pm UTC](https://forumautomation.com/t/learn-plc-programming-with-a-free-android-application/1290 "2016-08-28T21:26:20Z")
Good news for people who are interested to learn PLC programming. I would like to introduce 2 android application which is used as PLC programming simulator. You can learn PLC programming on the go with these PLC simula… --- ## [Siemens PLC programming : Commands used in Statement List](https://forumautomation.com/t/siemens-plc-programming-commands-used-in-statement-list/297)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [March 7, 2015, 10:30pm UTC](https://forumautomation.com/t/siemens-plc-programming-commands-used-in-statement-list/297 "2015-03-07T22:30:18Z")
• Bit Logic Instructions ) Nesting Closed = Assign A And A( And with Nesting Open AN And Not AN( And Not with Nesting Open FN Edge Negative FP Edge Positive O Or O And before Or O( Or with Nesting Open ON Or… --- ## [Overview of Allen Bradley PLC Address Mapping](https://forumautomation.com/t/overview-of-allen-bradley-plc-address-mapping/9044)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [January 1, 2021, 12:44pm UTC](https://forumautomation.com/t/overview-of-allen-bradley-plc-address-mapping/9044 "2021-01-01T12:44:19Z")
Introduction : Proper mapping of inputs and inputs is one of the first tasks of PLC programming. It is an easy step but some programmers avoid it or forget to do it correctly. Requires one to contain all primary input & … --- ## [Different types of PLC I/O circuit](https://forumautomation.com/t/different-types-of-plc-i-o-circuit/4244)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [July 27, 2018, 7:08pm UTC](https://forumautomation.com/t/different-types-of-plc-i-o-circuit/4244 "2018-07-27T19:08:02Z")
The input/output (I/O) section of a PLC is the section to which all fi eld devices are connected and provides the interface between them and the CPU. Input/output arrangements are built into a fixed PLC while modular t… --- ## [How to connect 4 wire RTD to PLC?](https://forumautomation.com/t/how-to-connect-4-wire-rtd-to-plc/1545)
**Author:** [@automate](https://forumautomation.com/u/automate)\ **Replies:** 1\ **Last updated:** [December 17, 2016, 2:56pm UTC](https://forumautomation.com/t/how-to-connect-4-wire-rtd-to-plc/1545 "2016-12-17T14:56:52Z")
How we can connect 4 wire RTD to PLC cards? --- ## [Control of Drilling Machine PLC program](https://forumautomation.com/t/control-of-drilling-machine-plc-program/4016)
**Author:** [@areejsidhik](https://forumautomation.com/u/areejsidhik)\ **Replies:** 0\ **Last updated:** [July 4, 2018, 4:50am UTC](https://forumautomation.com/t/control-of-drilling-machine-plc-program/4016 "2018-07-04T04:50:02Z")
Let’s consider a PLC program for drilling on a drilling machine. I/O assignments Input Stop button X000 Operation start button X001 Fall start button X002 (Consider this to be an auto-return type pushbutton.) Fall en… --- ## [Data manipulation instruction in PLC](https://forumautomation.com/t/data-manipulation-instruction-in-plc/3074)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [February 2, 2018, 8:20pm UTC](https://forumautomation.com/t/data-manipulation-instruction-in-plc/3074 "2018-02-02T20:20:28Z")
Data manipulation involves transferring data and operating on data with math Functions, data conversion, data comparison and logical operations. Data manipulation instructions enable the PLC to take some of the qualities… --- ## [PLC Controlled Three-phase Motor System](https://forumautomation.com/t/plc-controlled-three-phase-motor-system/12962)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [January 17, 2025, 4:45am UTC](https://forumautomation.com/t/plc-controlled-three-phase-motor-system/12962 "2025-01-17T04:45:12Z")
The motor must be able to operate in both directions, which can only be accomplished via a Forward/Reverse Control Logic circuit or a relay circuit. In this condition, the most practical option would be a simple forward… --- ## [Comparison between PLC and PC (Personal computer)](https://forumautomation.com/t/comparison-between-plc-and-pc-personal-computer/3242)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 6, 2018, 12:11pm UTC](https://forumautomation.com/t/comparison-between-plc-and-pc-personal-computer/3242 "2018-03-06T12:11:43Z")
The architecture of a PLC is basically the same as that of a personal computer. A personal computer (PC) can be made to operate as a programmable logic controller if you provide some way for the computer to receive in… --- ## [What is the need for CP card on a PLC?](https://forumautomation.com/t/what-is-the-need-for-cp-card-on-a-plc/9244)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 3\ **Last updated:** [October 28, 2024, 4:12pm UTC](https://forumautomation.com/t/what-is-the-need-for-cp-card-on-a-plc/9244 "2024-10-28T16:12:02Z")
Explain the need for CP card in the PLC network --- ## [PLC Sequencer instructions](https://forumautomation.com/t/plc-sequencer-instructions/3231)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 3, 2018, 5:44pm UTC](https://forumautomation.com/t/plc-sequencer-instructions/3231 "2018-03-03T17:44:20Z")
Programmed sequencers can perform the same specifi c on or off patterns of outputs that are continuously repeated. Sequencer instructions simplify your ladder program by allowing you to use a single instruction or pair o… --- ## [How functional block diagram works in a PLC?](https://forumautomation.com/t/how-functional-block-diagram-works-in-a-plc/10913)
**Author:** [@Sudha\_m](https://forumautomation.com/u/Sudha_m)\ **Replies:** 2\ **Last updated:** [April 27, 2023, 2:05pm UTC](https://forumautomation.com/t/how-functional-block-diagram-works-in-a-plc/10913 "2023-04-27T14:05:44Z")
A graphical programming language which is a representation of function blocks and logic gates is known as functional block diagram. When the PLC was created, logic gates and their use in integrated logic circuits were… --- ## [How to do Hardware Configuration of SIEMENS S7 1200 & S7-1500 Using TIA Portal?](https://forumautomation.com/t/how-to-do-hardware-configuration-of-siemens-s7-1200-s7-1500-using-tia-portal/9007)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [December 26, 2020, 5:42am UTC](https://forumautomation.com/t/how-to-do-hardware-configuration-of-siemens-s7-1200-s7-1500-using-tia-portal/9007 "2020-12-26T05:42:10Z")
What is Hardware Configuration? The hardware configuration includes the equipment configuration, the hardware of the automation system, the field tools of the PROFINET bus system, and the hardware for visualization. The… --- ## [PLC input output connections and scan](https://forumautomation.com/t/plc-input-output-connections-and-scan/6455)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [May 27, 2019, 5:34pm UTC](https://forumautomation.com/t/plc-input-output-connections-and-scan/6455 "2019-05-27T17:34:32Z")
PLCs work with data information and output that are expressed in the form of electrical voltage, electric current, and switches. And the signal used can be in the form of disk and analog signals. And for voltage and elec… --- ## [How to connect and Download program in CompactLogix and ControlLogix?](https://forumautomation.com/t/how-to-connect-and-download-program-in-compactlogix-and-controllogix/8955)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [December 14, 2020, 5:11am UTC](https://forumautomation.com/t/how-to-connect-and-download-program-in-compactlogix-and-controllogix/8955 "2020-12-14T05:11:30Z")
Allen Bradley is one of the best industrial automation manufacturing company. There are mainly three types of Allen Bradley PLCs based on their capabilities. They are MicroLogix CompactLogix ControlLogix To know more … --- ## [Software package hw-update is not installed. How to solve simatic manager error?](https://forumautomation.com/t/software-package-hw-update-is-not-installed-how-to-solve-simatic-manager-error/8709)
**Author:** [@automate](https://forumautomation.com/u/automate)\ **Replies:** 1\ **Last updated:** [October 23, 2020, 11:56am UTC](https://forumautomation.com/t/software-package-hw-update-is-not-installed-how-to-solve-simatic-manager-error/8709 "2020-10-23T11:56:15Z")
The project contains object of the software package Hw-update which cannot be edited because the software package is not installed or exist in an earlier version. How to solve this issue in simatic manager? [Previous page](https://forumautomation.com/c/plc-programmable-logic-controllers/6.md?per_page=50) [Next page](https://forumautomation.com/c/plc-programmable-logic-controllers/6.md?page=2&per_page=50)