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Horner XL4 Report Generator – Text / Data

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We will now look at the Horner report generator. The Horner APG XL4 all in one controller has a feature to generate text reports. These reports can consist of text and data from memory locations in the controller. Reports can be printed using a serial interface printer through any of the serial ports of the … Read more

Horner XL4 Recipe Instruction – All In One

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The Horner APG XL4 all in one controller has recipe instructions. Recipes allow you to send or update multiple registers in your program from the removable micro SD memory card. Each recipe can have 250 ingredients and 1024 products. The number of recipes will be limited to the size of the removable memory card. We … Read more

Horner XL4 Rotate and Shift Register

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The Horner APG XL4 all in one controller has several different instructions to shift and rotate the bits, bytes, words or double words in the memory. We will be discussing the bitwise operations of the shift and rotate instructions. Looking further into the move operations we will look at the Element Rotate and Element Shift instructions … Read more

Horner XL4 Program Control Instructions

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We will now look at program control in the Horner XL4 all in one controller. PLC programs scan usually from left to right, top to bottom. The outputs from the previous rung are available for the next. This is the operation of a PLC. Program control instructions allow us to add or remove parts of … Read more

Horner XL4 Math Instructions – All In One

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Math instructions in the Horner APG XL4 OCS all-in-one controller are broken down into Basic Math Operations and Advanced Math Operations. Basic Math Operations include the following: Math Equation Element, Add, Subtract, Multiply, Divide, Modulo, Square Root, Absolute Value Advanced Math Operations include the following: Power of X, Base 10 Logarithm, Power of e, Natural … Read more

Horner XL4 Compare and Move Instructions

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Compare and move instructions in the Horner XL4 OCS all-in-one controller can be very powerful. We will be looking at how to use these compare and move instructions. Combining these two instructions to build a sequencer, we will apply this to an application example. Our application will be a simple traffic light. The HMI screen … Read more

Omron C20K, C28K, C40K, C60K Troubleshooting

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The Omron C20K, C28K, C40K, and C60K shoebox programmable logic controllers have been discontinued since March of 2002. These Omron ‘K’ series PLCs were popular controllers and have been in installations for over 25 years. We will take a look at this Omron PLC and review some troubleshooting techniques. Planning for the eventual fatal failure … Read more

Horner XL4 Timers and Counters – All In One

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Timers and counters are used in the majority of PLC programs. We will not look at how timers and counters can be programmed in the Horner XL4 OCS all-in-one controller.

Horner XL4 User Interface – All In One

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We will now look at the Horner XL4 user interface. The HMI (Human Machine Interface) part of the XL4 all in one controller will be what the operator views. We will look at the features of the display and learn how our program will control what the display will show.

Horner XL4 Numbering System and Addressing

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We will now look at the Horner XL4 numbering system and addressing. Data is stored in different memory-type locations called registers. The registers can be either bits or words (16bit). Multiple registers can be used together to store a 32-bit value. (Double word) This all in one controller has several additional registers to handle some … Read more