Learn How to Use the Do-More PLC CLAMP: Instruction for Limit Range

2K views Mar 16, 2023

Do-More CLAMP - Range Limit The Limit Range (CLAMP) instruction constraints a memory location so that its value is always within a specified range. This is accomplished by copying the Input value to the Output value using the following rules: If the Input value is greater than or equal to the High limit, the Output value will be set to the High value. If the Input value is between the High and Low limits, the Output value will be set to the Input value. If the Input value is less than or equal to the Low limit, the Output value will be set to the Low value. When the ladder status is ON, in addition to the typical status values displayed, the Limit Range instruction shows a small trend that graphically indicates the instruction's values. To disable the display of the mini-trend, go to the View, Options menu, select the Ladder tab, then uncheck the Show Trend Status selection. Programming and examples of the BRX Do-More series can be found at this URL: https://accautomation.ca/series/brx-do-more-plc/ There are several reasons why we are using the BRX Do-More Controller. Here are just a few. – Standalone PLC with built-in I/O – Built-in Data Logging – Communication ability – Ethernet Port, RS232, RS485, USB – support for protocols such as Modbus RTU, Modbus TCP, ASCII, K-sequence (DirectLOGIC users), Custom Protocols (ASCII over serial, TCP or UDP over Ethernet) – Built-in Analog input and output – Integrated motion control – High-speed counters