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.

BRX Do-More Click Click PLUS Communication Modbus RTU Modbus RTU Modbus TCP Modbus TCP PLC Solo Process Temperature Controller

BRX Do-More PLC Using Modbus IO Scanner Profile

The Do-More Designer Programming Software (2.9) or higher includes a Modbus I/O Scanner with some profiles for Modbus Server (Slave) devices. This will greatly reduce the time it takes to implement and troubleshoot communications in your projects. Modbus communications are done independent of the PLC scan time and will have little or no ladder logic for the program.
Last time we communicated to a Solo process temperature controller via Modbus RTU RS485. (twisted pair) We manually set the Modbus IO scanner, reading the present value (PV) and set value (SV) of the Solo. The writing of the set value (SV) located within the BRX Do-More controller was also done. This was all be done without using any ladder logic code. We will now use the Modbus profile in the Modbus IO Scanner to connect a Click Plus PLC to our RS485 network. Using the Modbus scanner to write and read instructions we will also show how to use the ladder logic code with our scanner. Let’s get started.