Hello everyone, I have a question regarding scaling a potentiometer from -5.0000 to +5.0000. Is there a way to limit the decimals to -5.0 and +5.0 within those ranges? I am using a potentiometer connected to a 24vdc motor that moves left and right within these limits. Any assistance would be greatly appreciated. Thank you.
Are you using a potentiometer with an analog input and wondering about the number of decimal points to display on an HMI screen? By default, floating point math provides 7 decimal places, but for precision limitations on some devices like the FX with 32-bit floats, it may introduce small errors. However, you can easily limit the display to one decimal place by multiplying the value by 10, converting it to an integer, then back to a float and dividing by 10.0. While it may display three decimal places when monitoring, the value essentially only has one decimal place with no values after zero. For example, 5.123 becomes 5.100. Keep in mind that rounding up might result in values like 5.200 for 5.154. If you're working with an HMI, you can adjust the settings to show values with one decimal place. For scaling limits of -5.0 to +5.0, further information on your scaling process and code implementation would be helpful. Remember that floats require two registers, such as D20 + D21.
Gracias por tu respuesta. En este sistema, los datos del potenciómetro se comparan con los del HMI. El motor mueve un mecanismo 5 mm hacia la derecha e izquierda, calculado para los 10 giros del potenciómetro. Por este motivo, los datos no pueden ser redondeados en exceso, ya que se trata de un sistema de lazo cerrado.
Based on your post, it appears that you already have the desired outcome. When utilizing floating point math, the HMI screen will only display one decimal place. Limiting it to one decimal is the only option, as floating point math will always provide up to seven decimal places.
Sure, it's definitely possible! For this, you might want to consider leveraging the map function to scale your potentiometer readings. For limiting decimal points, you could use a function like round() in most programming languages to limit the decimal points to one place. Remember, always be cautious when dealing with the floating point numbers because they are known to have precision issues. Let me know if you need any further assistance.
You can certainly limit the decimal precision by adjusting the scaling in your control software or device. Typically, you may steer the potentiometer readout to a simpler numeric format like -5.0 to +5.0. However, it's essential to understand this won't change the actual precision of your potentiometer, just how the data is represented. You may need to rethink if you're dealing with a very sensitive application that requires microscopic adjustments.
Hey there! Your potentiometer should be capable of limiting the decimals, but it might largely depend on your system's programming capabilities. You can try rounding off the values in the program code itself. For instance, in Arduino C, the function 'round' would be highly helpful. Using this, every reading could be rounded off to one decimal place, resulting in your desired range from -5.0 to +5.0. Let me know if this works for you!
Hi there! You can achieve that by using a simple microcontroller, like an Arduino, to read the potentiometer value and then map it to your desired range. By using the `map()` function, you can easily scale your input values from the full range of the potentiometer to your specified limits of -5.0 to +5.0. To limit the decimals, you can format the output to one decimal place when you print or display it. This way, you'll have precise control over your motor while maintaining the desired range. Hope that helps!
✅ Work Order Management
✅ Asset Tracking
✅ Preventive Maintenance
✅ Inspection Report
We have received your information. We will share Schedule Demo details on your Mail Id.
Answer: Answer: To scale a potentiometer within the range of -5.0 to +5.0 on a Mitsubishi FX3U-32MT PLC, you can utilize the scaling function blocks available in the programming software.
Answer: Answer: Yes, you can limit the decimals to -5.0 and +5.0 by configuring the scaling parameters in your PLC program to handle the input values from the potentiometer accordingly.
Answer: Answer: You can program the PLC logic to interpret the potentiometer readings within the desired range and control the motor movement based on those values to ensure it stays within the -5.0 to +5.0 limits.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.