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Articles BRX Do-More Do-More EasyPLC Machine Simulator PLC PLC Basics PLC Learning Productivity 1000 Productivity 2000 Productivity 3000 Productivity Suite

3 Steps to PLC Programming – Learning

You’ve had this idea for years since you were a kid. You want to be an electrical engineer, and you’re finally going to follow through on it and learn PLC programming to start your career off right! What? That’s what you thought, anyway. But then you started googling around, trying to figure out how to begin learning PLC programming, and it sounds like it will take forever! How are you supposed to know which software is the best option? Which hardware should you buy?
Don't Get Caught Without These 3 PLC RequirementsWe will look at three steps to kick off your PLC programming and determine if this learning is proper for you. Let’s get started.

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PLC PLC Basics PLC Learning Productivity 1000 Productivity 2000 Productivity 3000 Productivity Suite Timers

Productivity 2000 PLC Ladder Logic Timers

Timers are one of the first things you learn about programmable logic controllers. (PLC) Just about every PLC program will include timer instructions. The Productivity 2000 Series PLC has several different timer instructions for your program. We discussed the timed coil (TMC) and flasher coil (FLS) last time as part of the ladder logic output discussion. (Ladder Logic Output InstructionVideo)
Productivity 2000 PLC Ladder Logic TimersWe will now look at using the Simple Timer (STMR) and the Timer (TMR) instructions in the productivity suite software. Let’s get started.

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Outputs PLC PLC Basics PLC Learning Productivity 1000 Productivity 2000 Productivity 3000 Productivity Suite

Productivity 2000 PLC Ladder Logic Outputs

The Productivity Suite Software comprises more than 82 instructions divided into 14 categories. These instructions include Out, Set, Reset, OR Out, Flasher, Debounce, Timed, Toggle, Program End, and No Operation. Coils (Outputs) are one of these categories of ladder logic instructions to program your productivity PLC controller. Ladder logic outputs or coils are in every PLC program.
Productivity 2000 PLC Ladder Logic OutputsWe will be looking at these instructions in the Productivity 2000 series PLC. We will also look at organizing your favorite instructions. This will make them easier to find when programming the productivity PLC. Let’s get started.

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Inputs PLC PLC Basics PLC Learning Productivity 1000 Productivity 2000 Productivity 3000 Productivity Suite

Productivity 2000 PLC Ladder Logic Contacts

The Productivity Suite Software comprises more than 82 instructions divided into 14 categories. These instructions include NO / NC, NO Edge / NC Edge, and Compare. Contacts are one of these instructions to program your productivity PLC controller. Ladder logic contacts are in every PLC program.
Productivity 2000 PLC Ladder Logic ContactsWe will be looking at these instructions in the Productivity 2000 series PLC. We will also look at organizing your favorite instructions. This will make them easier to find when programming the productivity PLC. Let’s get started.

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Database Number Systems PLC PLC Basics PLC Learning Productivity 1000 Productivity 2000 Productivity 3000 Productivity Suite

Productivity 2000 Series PLC Tag Database

The Productivity Suite Software allows us to use tags in the PLC. Tags are a method for assigning and referencing memory locations (numbering systems) within the programmable logic controller. They allow a more structured programming approach and are stored within a tag database. The tag database is stored in the memory of the Productivity Series of PLCs from Automation Direct. Do not overthink tags. Tags are just names assigned to variables of any data type stored in the PLC memory.
Productivity 2000 Series PLC Tag DatabaseWe will now look at the tag numbering systems and database used with the Productivity 2000 controller. Let’s get started.

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Communication IoT Software MQTT Node-RED Open Devices PLC PLC Learning Productivity 1000 Productivity 2000 Raspberry Pi

Productivity PLC Node-RED MQTT – P1000 / P2000

We will use an MQTT broker in Node-RED to communicate to the productivity PLC clients. MQTT stands for Message Queuing Telemetry Transport. This simple ‘publish and subscribe’ communication protocol does not take too many resources.
Constrained devices with low bandwidth are ideal for MQTT. This protocol provides machine-to-machine (M2M) connectivity, perfect for the Internet of Things. (IoT) This protocol is not for remote IO or real-time (deterministic) applications. MQTT is a good solution for applications that move data from hundreds or thousands of machines (sensors) to clients in many networks.
Productivity PLC Node-RED MQTT - P1000 / P2000We will be installing and programming the AEDES MQTT Broker in Node-RED. A productivity P2000, P1000, and Node-RED will be the clients communicating to the broker. The PLC simulator inputs on each controller will control the outputs on the other controller. This will demonstrate the communication capability for publishing and subscribing to this IoT platform. Let’s get started.