# PLC (Programmable Logic Controllers) **URL:** https://forumautomation.com/c/plc-programmable-logic-controllers/6.md?page=4 [Latest](https://forumautomation.com/latest.md) · [Categories](https://forumautomation.com/categories.md) · [Tags](https://forumautomation.com/tags.md) **Page:** 5 --- ## [PLC programming : Siemens STEP 7](https://forumautomation.com/t/plc-programming-siemens-step-7/293)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [March 7, 2015, 9:58pm UTC](https://forumautomation.com/t/plc-programming-siemens-step-7/293 "2015-03-07T21:58:46Z")
This would be useful for Maintenance personal still using old version of Siemens STEP 7 • Installation and authorization The first time you use STEP 7, install it and transfer the authorization from diskette to the hard… --- ## [How to connect two siemens PLC using Modbus Tcp\_ip?](https://forumautomation.com/t/how-to-connect-two-siemens-plc-using-modbus-tcp-ip/2509)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 24, 2017, 7:23pm UTC](https://forumautomation.com/t/how-to-connect-two-siemens-plc-using-modbus-tcp-ip/2509 "2017-10-24T19:23:31Z")
Let’s look at into, How two PLCs are connect using Modbus Tcp\_ip. To connect devices, put one system as a server and other as client. On the Project tree section, you will have your two PLCs, client and the server. F… --- ## [Error When Uploading from Siemens PLC – What Does It Mean and Do I Need to Install Something?](https://forumautomation.com/t/error-when-uploading-from-siemens-plc-what-does-it-mean-and-do-i-need-to-install-something/12588)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [September 24, 2024, 1:34pm UTC](https://forumautomation.com/t/error-when-uploading-from-siemens-plc-what-does-it-mean-and-do-i-need-to-install-something/12588 "2024-09-24T13:34:54Z")
Error When Uploading from Siemens PLC – What Does It Mean and Do I Need to Install Something? I’m getting an error while trying to upload from a Siemens PLC. Does anyone know what this error means, and whether I need to … --- ## [Can I replace a faulty Logix5561 CPU with Logix5555?](https://forumautomation.com/t/can-i-replace-a-faulty-logix5561-cpu-with-logix5555/170)
**Author:** [@automate](https://forumautomation.com/u/automate)\ **Replies:** 1\ **Last updated:** [November 28, 2014, 7:38pm UTC](https://forumautomation.com/t/can-i-replace-a-faulty-logix5561-cpu-with-logix5555/170 "2014-11-28T19:38:04Z")
Please, I need help, can I replace a faulty Logix5561 CPU with Logix5555,doing I/O configuration, please I need advice --- ## [How to connect 3 Siemens s7-1200 PLC in a HMI](https://forumautomation.com/t/how-to-connect-3-siemens-s7-1200-plc-in-a-hmi/9680)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [August 2, 2021, 12:48pm UTC](https://forumautomation.com/t/how-to-connect-3-siemens-s7-1200-plc-in-a-hmi/9680 "2021-08-02T12:48:11Z")
Explain how should i connect 3 siemens PLC in a HMI --- ## [Is it possible to learn Siemens PLC at home without a PLC?](https://forumautomation.com/t/is-it-possible-to-learn-siemens-plc-at-home-without-a-plc/12131)
**Author:** [@Sundar\_Iyalunaidu](https://forumautomation.com/u/Sundar_Iyalunaidu)\ **Replies:** 1\ **Last updated:** [June 10, 2024, 10:41am UTC](https://forumautomation.com/t/is-it-possible-to-learn-siemens-plc-at-home-without-a-plc/12131 "2024-06-10T10:41:56Z")
Is it possible to learn Siemens PLC at home without a PLC? --- ## [SIMATIC S7-1200 / S7-1500 Comparison list for programming languages](https://forumautomation.com/t/simatic-s7-1200-s7-1500-comparison-list-for-programming-languages/315)
**Author:** [@EstrinAutomation](https://forumautomation.com/u/EstrinAutomation)\ **Replies:** 0\ **Last updated:** [March 15, 2015, 7:41pm UTC](https://forumautomation.com/t/simatic-s7-1200-s7-1500-comparison-list-for-programming-languages/315 "2015-03-15T19:41:31Z")
Overview of the comparison list Below you will find an overview of which instructions and functions you can use for which controller family. To retain clarity, we have structured the comparison list as follows: • Basic … --- ## [What are the Differences Between Point I/O and Flex I/O?](https://forumautomation.com/t/what-are-the-differences-between-point-i-o-and-flex-i-o/11661)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 0\ **Last updated:** [December 21, 2023, 1:28pm UTC](https://forumautomation.com/t/what-are-the-differences-between-point-i-o-and-flex-i-o/11661 "2023-12-21T13:28:08Z")
What are the Differences Between Point I/O and Flex I/O? It is critical to select the correct I/O module for your automation system to ensure smooth connection and functionality. Allen-Bradley provides two popular choice… --- ## [Tank level control in VBA excel](https://forumautomation.com/t/tank-level-control-in-vba-excel/10176)
**Author:** [@abu123](https://forumautomation.com/u/abu123)\ **Replies:** 0\ **Last updated:** [February 4, 2022, 5:26am UTC](https://forumautomation.com/t/tank-level-control-in-vba-excel/10176 "2022-02-04T05:26:54Z")
I am trying to simulate the tank level control in VBA excel If I increase the flow level will increase to certain value.how I can write the codes in VBA excel to do simulation?please I need help --- ## [How to add Hardware Configuration on CompactLogix PLC and ControlLogix PLC?](https://forumautomation.com/t/how-to-add-hardware-configuration-on-compactlogix-plc-and-controllogix-plc/9035)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [December 31, 2020, 1:20am UTC](https://forumautomation.com/t/how-to-add-hardware-configuration-on-compactlogix-plc-and-controllogix-plc/9035 "2020-12-31T01:20:32Z")
What is CompactLogix PLC? CompactLogix PLCs are used for the monitoring of the medium control device. This PLC is used to power the system and the packaging machinery. It’s got an I/O system built in. In these PLCs, ext… --- ## [What are the Allen Bradley PLC communication protocols?](https://forumautomation.com/t/what-are-the-allen-bradley-plc-communication-protocols/12365)
**Author:** [@automation\_engineer6](https://forumautomation.com/u/automation_engineer6)\ **Replies:** 1\ **Last updated:** [August 15, 2024, 1:58pm UTC](https://forumautomation.com/t/what-are-the-allen-bradley-plc-communication-protocols/12365 "2024-08-15T13:58:35Z")
What are the Allen Bradley PLC communication protocols? --- ## [How to download control flash plus?](https://forumautomation.com/t/how-to-download-control-flash-plus/12341)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [August 5, 2024, 6:19am UTC](https://forumautomation.com/t/how-to-download-control-flash-plus/12341 "2024-08-05T06:19:08Z")
How to download control flash plus? --- ## [What You Need to about PLC and the PLC Programming Languages](https://forumautomation.com/t/what-you-need-to-about-plc-and-the-plc-programming-languages/3110)
**Author:** [@learnplccourses](https://forumautomation.com/u/learnplccourses)\ **Replies:** 0\ **Last updated:** [February 7, 2018, 12:34pm UTC](https://forumautomation.com/t/what-you-need-to-about-plc-and-the-plc-programming-languages/3110 "2018-02-07T12:34:55Z")
Industries rely on robust systems for the production of various industrial products. With high demand for finished industrial products, it is impossible to fully rely on human beings so as to be able to run the operation… --- ## [How do I upload a program from S7-300 PLC via Ethernet?](https://forumautomation.com/t/how-do-i-upload-a-program-from-s7-300-plc-via-ethernet/12757)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [November 3, 2024, 4:54pm UTC](https://forumautomation.com/t/how-do-i-upload-a-program-from-s7-300-plc-via-ethernet/12757 "2024-11-03T16:54:41Z")
How do I upload a program from S7-300 PLC via Ethernet? --- ## [Major PLC Cyber Security Threats and Precautions to be taken to protect PLCs from cyber security attacks](https://forumautomation.com/t/major-plc-cyber-security-threats-and-precautions-to-be-taken-to-protect-plcs-from-cyber-security-attacks/10802)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [December 19, 2022, 1:25pm UTC](https://forumautomation.com/t/major-plc-cyber-security-threats-and-precautions-to-be-taken-to-protect-plcs-from-cyber-security-attacks/10802 "2022-12-19T13:25:32Z")
Programmable logic controller (PLC) is a type of industrial control system that monitors and controls various types of equipment and processes in an industrial or commercial environment. Like any other computer system,… --- ## [What does the PLC S7 1200 mean?](https://forumautomation.com/t/what-does-the-plc-s7-1200-mean/12755)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [October 31, 2024, 6:37am UTC](https://forumautomation.com/t/what-does-the-plc-s7-1200-mean/12755 "2024-10-31T06:37:15Z")
What does the PLC S7 1200 mean? --- ## [What is the need for integer, and float point files in a PLC](https://forumautomation.com/t/what-is-the-need-for-integer-and-float-point-files-in-a-plc/9356)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [April 27, 2021, 6:38am UTC](https://forumautomation.com/t/what-is-the-need-for-integer-and-float-point-files-in-a-plc/9356 "2021-04-27T06:38:30Z")
Explain the requirement for integer and float point file in a PLC --- ## [What is RSLogix 5000? RSLogic 5000, PLC programming tutorial for beginners](https://forumautomation.com/t/what-is-rslogix-5000-rslogic-5000-plc-programming-tutorial-for-beginners/8428)
**Author:** [@ashlin](https://forumautomation.com/u/ashlin)\ **Replies:** 0\ **Last updated:** [July 5, 2020, 6:08pm UTC](https://forumautomation.com/t/what-is-rslogix-5000-rslogic-5000-plc-programming-tutorial-for-beginners/8428 "2020-07-05T18:08:34Z")
What is RSLogix 5000 The RSLogix software is programming software that can be used with all the Logix controllers. This software helped many programmers to reduce the cost of development and the ability to reuse the cod… --- ## [What is digital input in PLC?](https://forumautomation.com/t/what-is-digital-input-in-plc/13227)
**Author:** [@TSRS](https://forumautomation.com/u/TSRS)\ **Replies:** 1\ **Last updated:** [May 14, 2025, 4:29pm UTC](https://forumautomation.com/t/what-is-digital-input-in-plc/13227 "2025-05-14T16:29:00Z")
What is digital input in PLC? --- ## [What is differences between rs logix and rs studio?](https://forumautomation.com/t/what-is-differences-between-rs-logix-and-rs-studio/12326)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [August 2, 2024, 10:11am UTC](https://forumautomation.com/t/what-is-differences-between-rs-logix-and-rs-studio/12326 "2024-08-02T10:11:57Z")
what is differences between rs logix and rs studio ? --- ## [6 must-have security features for an Industrial IoT portal](https://forumautomation.com/t/6-must-have-security-features-for-an-industrial-iot-portal/10088)
**Author:** [@sRada](https://forumautomation.com/u/sRada)\ **Replies:** 0\ **Last updated:** [December 29, 2021, 8:31am UTC](https://forumautomation.com/t/6-must-have-security-features-for-an-industrial-iot-portal/10088 "2021-12-29T08:31:00Z")
What should you pay attention to when purchasing an IoT portal? Usually, when doing research for the best IoT portal, you look for a combination of the best features. However, security should not be forgotten. You can ha… --- ## [Can I use the PLC output to directly control a magnetic contactor?](https://forumautomation.com/t/can-i-use-the-plc-output-to-directly-control-a-magnetic-contactor/12546)
**Author:** [@TSRS](https://forumautomation.com/u/TSRS)\ **Replies:** 1\ **Last updated:** [September 9, 2024, 6:40am UTC](https://forumautomation.com/t/can-i-use-the-plc-output-to-directly-control-a-magnetic-contactor/12546 "2024-09-09T06:40:37Z")
Can I use the PLC output to directly control a magnetic contactor? --- ## [What is the difference between RSLinx and RSLogix?](https://forumautomation.com/t/what-is-the-difference-between-rslinx-and-rslogix/11507)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 0\ **Last updated:** [October 5, 2023, 2:33pm UTC](https://forumautomation.com/t/what-is-the-difference-between-rslinx-and-rslogix/11507 "2023-10-05T14:33:19Z")
What is the difference between RSLinx and RSLogix? RSLinx: Rockwell Automation’s RSLinx is a communication and connectivity software. Its major function is to establish communication between devices in an industri… --- ## [Drop Down Population from array](https://forumautomation.com/t/drop-down-population-from-array/10236)
**Author:** [@Rector](https://forumautomation.com/u/Rector)\ **Replies:** 0\ **Last updated:** [February 23, 2022, 9:20am UTC](https://forumautomation.com/t/drop-down-population-from-array/10236 "2022-02-23T09:20:08Z")
Hello Everyone, I have a problem, I am trying to populate a plc hmi comboboxs which is dependent on each other and ther data is fetching from different array, can anyone say how can I use the execute the program accordi… --- ## [Open source PLC](https://forumautomation.com/t/open-source-plc/1077)
**Author:** [@thiagoralves](https://forumautomation.com/u/thiagoralves)\ **Replies:** 0\ **Last updated:** [June 3, 2016, 5:33pm UTC](https://forumautomation.com/t/open-source-plc/1077 "2016-06-03T17:33:43Z")
Dear friends, I’m a Ph.D. student at the University of Alabama in Huntsville, and my research topic is SCADA cyber security. My goal is to find vulnerabilities in PLCs and try to fix them. However, its really hard to st… --- ## [What are the key features and advantages of the ControlLogix platform from Allen-Bradley, and how does it differ from other PLC platforms?](https://forumautomation.com/t/what-are-the-key-features-and-advantages-of-the-controllogix-platform-from-allen-bradley-and-how-does-it-differ-from-other-plc-platforms/11329)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 0\ **Last updated:** [July 25, 2023, 1:38am UTC](https://forumautomation.com/t/what-are-the-key-features-and-advantages-of-the-controllogix-platform-from-allen-bradley-and-how-does-it-differ-from-other-plc-platforms/11329 "2023-07-25T01:38:55Z")
The ControlLogix platform from Allen-Bradley is a highly regarded programmable logic controller (PLC) system that has been widely adopted in the industrial automation industry. It offers several key features and advan… --- ## [ASCII codes table - Format of standard characters](https://forumautomation.com/t/ascii-codes-table-format-of-standard-characters/224)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\ **Replies:** 0\ **Last updated:** [January 1, 2015, 5:00pm UTC](https://forumautomation.com/t/ascii-codes-table-format-of-standard-characters/224 "2015-01-01T17:00:44Z")
--- ## [How can a PLC know that the motor is turning or not](https://forumautomation.com/t/how-can-a-plc-know-that-the-motor-is-turning-or-not/9567)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [July 7, 2021, 5:09am UTC](https://forumautomation.com/t/how-can-a-plc-know-that-the-motor-is-turning-or-not/9567 "2021-07-07T05:09:15Z")
Explain how can a PLC determine if the motor is turning or not --- ## [How to do Allen Bradley MicroLogix 1100 Hardware Configuration with an Analog output](https://forumautomation.com/t/how-to-do-allen-bradley-micrologix-1100-hardware-configuration-with-an-analog-output/9024)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [December 29, 2020, 5:15am UTC](https://forumautomation.com/t/how-to-do-allen-bradley-micrologix-1100-hardware-configuration-with-an-analog-output/9024 "2020-12-29T05:15:56Z")
MicroLogix PLC This form of PLC is primarily used in small-scale industries. In this sort of PLC, we used rslogix500 for programming purposes. The input and output cards can be paired using a ribbon cord. We don’t need … --- ## [How to select PLC?](https://forumautomation.com/t/how-to-select-plc/9663)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 28, 2021, 1:30pm UTC](https://forumautomation.com/t/how-to-select-plc/9663 "2021-07-28T13:30:30Z")
Things to consider while Choosing PLC Programmable Logic Controller, shortly called PLC, is a general-purpose control system that accepts input from various sources like push buttons, temperature, flow sensors, pressure… --- ## [Why does the PLC make use of 24 volts?](https://forumautomation.com/t/why-does-the-plc-make-use-of-24-volts/12951)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [January 16, 2025, 8:01am UTC](https://forumautomation.com/t/why-does-the-plc-make-use-of-24-volts/12951 "2025-01-16T08:01:40Z")
Why does the PLC make use of 24 volts? --- ## [Connecting a Parallel Printer to an Siemens S7-200 in Freeport Mode](https://forumautomation.com/t/connecting-a-parallel-printer-to-an-siemens-s7-200-in-freeport-mode/206)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [December 27, 2014, 2:38am UTC](https://forumautomation.com/t/connecting-a-parallel-printer-to-an-siemens-s7-200-in-freeport-mode/206 "2014-12-27T02:38:20Z")
Special Hardware Requirements: lOne PC/PPI cable lOne converter, 9 -pin female to 25 -pin male lOne converter, serial -to-parallel lOne null modem adapter for swapping lines 2 and 3 (if required) lOne parallel printer On… --- ## [What is a PLC battery?](https://forumautomation.com/t/what-is-a-plc-battery/12952)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 2\ **Last updated:** [January 16, 2025, 8:47am UTC](https://forumautomation.com/t/what-is-a-plc-battery/12952 "2025-01-16T08:47:28Z")
What is a PLC battery? --- ## [What is a Modular PLC?](https://forumautomation.com/t/what-is-a-modular-plc/10999)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 0\ **Last updated:** [March 24, 2023, 12:40pm UTC](https://forumautomation.com/t/what-is-a-modular-plc/10999 "2023-03-24T12:40:44Z")
A rack-based system, the modular type PLC has its own Power supply, Processor, various IO modules, and Extension units installed on one or more racks. An industrial control system called a Programmable Logic Controll… --- ## [Allen Bradley 5380 Safety output 5069-OBV8S Circuit Fault](https://forumautomation.com/t/allen-bradley-5380-safety-output-5069-obv8s-circuit-fault/12145)
**Author:** [@Sundar\_Iyalunaidu](https://forumautomation.com/u/Sundar_Iyalunaidu)\ **Replies:** 1\ **Last updated:** [June 13, 2024, 5:22am UTC](https://forumautomation.com/t/allen-bradley-5380-safety-output-5069-obv8s-circuit-fault/12145 "2024-06-13T05:22:37Z")
Allen Bradley 5380 Safety output 5069-OBV8S Circuit Fault I recently encountered a red output light on my Allen Bradley 5380 safety digital output (5069-OBV8S) indicating a circuit fault. How can I program an alarm to no… --- ## [A Discrete Relay Type Output Module can be used to Switch Either AC Or DC Load Devices Why?](https://forumautomation.com/t/a-discrete-relay-type-output-module-can-be-used-to-switch-either-ac-or-dc-load-devices-why/11999)
**Author:** [@Sundar\_Iyalunaidu](https://forumautomation.com/u/Sundar_Iyalunaidu)\ **Replies:** 1\ **Last updated:** [April 26, 2024, 5:33pm UTC](https://forumautomation.com/t/a-discrete-relay-type-output-module-can-be-used-to-switch-either-ac-or-dc-load-devices-why/11999 "2024-04-26T17:33:04Z")
A Discrete Relay Type Output Module can be used to Switch Either AC Or DC Load Devices Why? --- ## [PLC Panel troubleshooting](https://forumautomation.com/t/plc-panel-troubleshooting/4137)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [July 17, 2018, 2:34pm UTC](https://forumautomation.com/t/plc-panel-troubleshooting/4137 "2018-07-17T14:34:12Z")
PLC troubleshooting is to correct the common operating problems with system components. Check for adequate power: An under-powered unit could result in unpredictable behavior. The 400/600 DC powered terminals require… --- ## [3 main reasons to choose PLC over hardware system](https://forumautomation.com/t/3-main-reasons-to-choose-plc-over-hardware-system/7787)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [January 24, 2020, 7:07pm UTC](https://forumautomation.com/t/3-main-reasons-to-choose-plc-over-hardware-system/7787 "2020-01-24T19:07:18Z")
PLC is an unavoidable control system used in the process industry. The PLC architecture is modular and flexible, allowing the expansion of hardware and software elements as the application needs change. A PLC system … --- ## [Is it possible to use apple macbook for connection to PLC's?](https://forumautomation.com/t/is-it-possible-to-use-apple-macbook-for-connection-to-plcs/9308)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [April 7, 2021, 12:29pm UTC](https://forumautomation.com/t/is-it-possible-to-use-apple-macbook-for-connection-to-plcs/9308 "2021-04-07T12:29:07Z")
can we connect a apple macbook to PLC, Does mac OS support PLC drives ? --- ## [Schneider modicom m340 application program password](https://forumautomation.com/t/schneider-modicom-m340-application-program-password/7724)
**Author:** [@antonyjv83](https://forumautomation.com/u/antonyjv83)\ **Replies:** 0\ **Last updated:** [January 15, 2020, 8:34am UTC](https://forumautomation.com/t/schneider-modicom-m340-application-program-password/7724 "2020-01-15T08:34:02Z")
Dear all, I had uploaded program from a schnider modicon m340 plc using unity pro 6.0. unfortunately all the blocks inside the same are password protected. is there any possibilty to crack these passwords. thanks and r… --- ## [What role does the IIoT play in present-day PLC applications?](https://forumautomation.com/t/what-role-does-the-iiot-play-in-present-day-plc-applications/13000)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 2\ **Last updated:** [April 18, 2025, 1:02am UTC](https://forumautomation.com/t/what-role-does-the-iiot-play-in-present-day-plc-applications/13000 "2025-04-18T01:02:31Z")
What role does the IIoT play in present-day PLC applications? --- ## [Allen Bradley Bundle of kit up for grabs](https://forumautomation.com/t/allen-bradley-bundle-of-kit-up-for-grabs/6647)
**Author:** [@The\_Sword](https://forumautomation.com/u/The_Sword)\ **Replies:** 1\ **Last updated:** [May 25, 2020, 7:52pm UTC](https://forumautomation.com/t/allen-bradley-bundle-of-kit-up-for-grabs/6647 "2020-05-25T19:52:23Z")
I have a selection of Allen Bradley kit if anyone is looking for some. 2 Allen Bradley Micrologix 1200 1762L24BWA Used once, Excellent cond. 2 Allen Bradley AIC+ 1761-NET-AIC Used once, Excellent cond.… --- ## [Problems related to Schneider PLC TM221CE40T](https://forumautomation.com/t/problems-related-to-schneider-plc-tm221ce40t/9535)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [June 24, 2021, 3:48am UTC](https://forumautomation.com/t/problems-related-to-schneider-plc-tm221ce40t/9535 "2021-06-24T03:48:08Z")
I have a problem with a model of PLC TM221CE40T from Schneider. Yesterday everything worked properly but today i saw an issue on this device. None of the output relay works. I don’t know why, how to solve this problem --- ## [Reversible Motor Starter Circuits for Changing the Rotational Direction of Three-Phase AC](https://forumautomation.com/t/reversible-motor-starter-circuits-for-changing-the-rotational-direction-of-three-phase-ac/223)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\ **Replies:** 0\ **Last updated:** [January 1, 2015, 4:43pm UTC](https://forumautomation.com/t/reversible-motor-starter-circuits-for-changing-the-rotational-direction-of-three-phase-ac/223 "2015-01-01T16:43:44Z")
Use the momentary contact switch at input I0.0 to start the motor counterclockwise. Use the momentary contact switch at input I0.1 to start the motor clockwise. The prerequisites are that the motor circuit breaker at inp… --- ## [How to Map DF1/DH485 to ControlLogix/CompactLogix?](https://forumautomation.com/t/how-to-map-df1-dh485-to-controllogix-compactlogix/9063)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [January 9, 2021, 9:33am UTC](https://forumautomation.com/t/how-to-map-df1-dh485-to-controllogix-compactlogix/9063 "2021-01-09T09:33:59Z")
In this article, I am trying to share how to map DF1/DH485 to ControlLogix/CompactLogix PLC. Step 1: Open RSLogix 500. Step 2: Click the Small image of the PLC controller. Can be found under the I/O config on the tree … --- ## [Siemens programming software for beginers](https://forumautomation.com/t/siemens-programming-software-for-beginers/1548)
**Author:** [@william](https://forumautomation.com/u/william)\ **Replies:** 0\ **Last updated:** [December 4, 2016, 1:48pm UTC](https://forumautomation.com/t/siemens-programming-software-for-beginers/1548 "2016-12-04T13:48:49Z")
guys a looking a suitable programming Siemens software which is compatible with ms window 8.1. plz i need your help bcoz am currently working in a company where by the machines uses step7-300 plc which uses a function b… --- ## [Rslogix 500 PID](https://forumautomation.com/t/rslogix-500-pid/3732)
**Author:** [@Adnan](https://forumautomation.com/u/Adnan)\ **Replies:** 0\ **Last updated:** [May 31, 2018, 4:28am UTC](https://forumautomation.com/t/rslogix-500-pid/3732 "2018-05-31T04:28:17Z")
Hello All, I am new to PLC trying to learn so pardon my silly questions. I have attached a pic of my .RSS file. What I am trying to do is controlling the temperature. My logic is I have a temperature gauge and a fan in a… --- ## [What is RSLogix?](https://forumautomation.com/t/what-is-rslogix/12107)
**Author:** [@Sundar\_Iyalunaidu](https://forumautomation.com/u/Sundar_Iyalunaidu)\ **Replies:** 1\ **Last updated:** [June 1, 2024, 6:17pm UTC](https://forumautomation.com/t/what-is-rslogix/12107 "2024-06-01T18:17:58Z")
What is RSLogix? --- ## [How can I connect an S7 300 PLC to Siemens VFD?](https://forumautomation.com/t/how-can-i-connect-an-s7-300-plc-to-siemens-vfd/12756)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [November 3, 2024, 4:51pm UTC](https://forumautomation.com/t/how-can-i-connect-an-s7-300-plc-to-siemens-vfd/12756 "2024-11-03T16:51:11Z")
How can I connect an S7 300 PLC to Siemens VFD? --- ## [What are the Most Effective Alternatives to PLCs?](https://forumautomation.com/t/what-are-the-most-effective-alternatives-to-plcs/12860)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [November 26, 2024, 2:23pm UTC](https://forumautomation.com/t/what-are-the-most-effective-alternatives-to-plcs/12860 "2024-11-26T14:23:08Z")
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