How to learn plc programming
Practical advice on learning PLC programming: using emulators, buying a real 24V PLC, and building skills with counters, timers, and analog inputs.
PLC & HMI
Every PLC and HMI tutorial on plctr.com: project setup, ladder and structured text, communication, troubleshooting and commissioning, written from the plant floor.
DeviceNet Troubleshooting
Covers the most common DeviceNet network problems: missing termination resistors, incorrect grounding, and undersized or multiple power supplies.
Beckhoff Twincat 3 Project
Beckhoff Twincat 3 Project course, how to use Twincat and how can create a project.
PLC Indirect Addressing
How PLC indirect addressing uses an index tag to select array elements, shown with a barcode history example storing the last 10 scans.
PLC Flip-Flop Example Code
Builds a flip-flop block in Logix Designer using an Add-On Instruction with TON and TOF timers, plus a 20 ms minimum value check.
Omron PLC CX-Programmer – I/O Table Creation
Step-by-step guide to creating and transferring an I/O table in Omron CX-Programmer, and clearing the CPU error LEDs once it is built.
How to download a program to plc, how to get the program from plc?
How to download a program to plc, how to get the program from plc? How to Create a PLC Backup? And how to connect to plc?
Plc Troubleshooting
Practical PLC troubleshooting methods: reading diagnostic LEDs and fault codes, adding counters to trace program flow, and using trend graphs.
PLC Controller Firmware Upgrade
How to upgrade a ControlLogix controller’s firmware with ControlFLASH software, plus a firmware revision reference for 1756-L6x and L7x controllers.
Connect to PLC via USB cable
How to configure the USB driver in RSLinx and connect a workstation to a ControlLogix controller’s USB port to upgrade firmware or download programs.
PLC First Scan Bit
Explains the S:FC first scan bit in Logix PLCs and how to use it for power-on timers, safety reset logic, and default sequencer parameters.
Siemens PLC Programming, S7-300 and S7-400 (SIMATIC S5) PLC
Siemens PLC Programming, Siemens S7-300 and Siemens S7-400 (Simatic S5) PLC usage, and Siemens plc command instructions, how to use, what are the communication types in Siemens, plc bus systems.
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