ACC Automation: PLC & Industrial Control Learning
Practical Tips and Techniques
We will be looking at and explaining IP Addressing, MAC Addressing (Physical Address), Subnets, and Subnet Masks. Communication using Ethernet usually revolves around the Open Systems Interconnection model (OSI model). This model was made for computing systems to communicate without regard for the underlying internal structure and technology. IP Addressing Analogy Think of it like … Read more
Using Visual Basic 2015, we will log three holding registers from the PLC, along with the time and date, into a Microsoft Access Database. We will log every minute to the database, including the information we collect from the PLC via Modbus TCP (Ethernet). All code will be done and shown so you can implement … Read more
We will be creating an HMI (human machine interface) login screen for the cylinder program that we developed previously. BUILDING A PLC PROGRAM THAT YOU CAN BE PROUD OF – PART 6 Our program had a Run, Jog and Teach mode for the cylinders. Our user will login with a user name and password. Based … Read more
Master cylinder control with programmable 500-step sequences! Learn to build a 7-cylinder sequencer using AdvancedHMI and Modbus TCP. Full tutorial included. We will continue the series by looking at a sequencer controlling seven cylinders that can be taught. The cylinders can be programmed by the operator from the AdvancedHMI screen. You will be able to … Read more
We will now look at the Game of Simon for our part 5 in this series of building a PLC program. Learning all about bit manipulation and sequencers Simon is a memory game introduced in 1978. It has four colored buttons, each producing a particular tone when it is pressed or activated by the device. … Read more
We will now create a PLC with HMI Training and learning environment. We will use the Automation Direct Do-More programming software tied into the Advanced HMI learning package via Modbus TCP. All of the software is free and fully functional. Learn PLC programming and use a powerful HMI (Human Machine Interface) easily and freely. Setting … Read more
We are using Modbus TCP protocol, reading ten registers in the PLC, and displaying a bar graph in Excel. e will use Visual Basic for Applications (VBA) to communicate with a PLC. Previously we have used VB6 to communicate Modbus TCP. Sequence for Modbus TCP on Excel using VBA The following steps will be done: … Read more
Utilizing the CX Server DDE Manager will allow us to provide a link to the information in the Omron PLC. This link can be placed on an Excel spreadsheet. Charts, graphs, etc., can be made from the data. We will create links on an excel spreadsheet from a CQM1H and a CP1L PLC. The information … Read more
We will use VBA in Excel to communicate to an Omron PLC. This will use the serial host link protocol. ACC Omron Host Link VBA In Part 1, we used VB6 to communicate from the computer to the PLC (Host Link Protocol). We will now use Visual Basic for Applications (VBA) to accomplish the same … Read more
Sending email messages from the PLC sounds like an easy task. However, very few applications do this on the production floor. This is probably due to the networks involved, and authentication can be complicated. In our example, we will use a restricted Gmail SMTP server so that no authentication will be required. We will walk … Read more