The digital raw value of a PLC (Programmable Logic Controller) analog input refers to the raw binary or digital data obtained from the analog-to-digital converter (ADC) circuitry within the PLC. This raw value is typically a numerical representation of the voltage or current level measured by the analog input channel. PLCs often use a range of values, such as 0-4095 for a 12-bit ADC, to represent the analog input signal. The actual voltage or current level is converted into a digital value within this range. This digital raw value can then be further processed, scaled, or used in control algorithms within the PLC program. For example, if the analog input voltage range is 0-10 volts and the PLC ADC has a resolution of 12 bits, the digital raw value could range from 0 to 4095, where 0 represents 0 volts and 4095 represents 10 volts. The digital raw value of a PLC analog input or output depends on several factors: Analog-to-Digital Converter (ADC) Resolution: The resolution of the ADC determines the number of digital steps or values available to represent the analog signal. For example, a 12-bit ADC can represent the analog signal with 2^12 (4096) digital steps. Signal Range: The range of the analog input or output signal is also important. For instance, if the analog input signal ranges from 0 to 10 volts, and the ADC is 12-bit, each step would represent approximately 10vdc or 20mA 4096 4096 10 volts. Scaling: PLCs often allow for scaling of analog signals. This means that the raw digital value obtained from the ADC can be mapped to a different range of values, such as engineering units (e.g., degrees Celsius, pressure in psi, etc.). Without specific details about the PLC model, the resolution of the ADC, and the scaling applied, it's challenging to provide an exact digital raw value for an analog input or output. However, once these details are known, it's straightforward to calculate or interpret the digital raw value.
Digital Raw data কি?
The digital raw value of a PLC (Programmable Logic Controller) analog input refers to the raw binary or digital data obtained from the analog-to-digital converter (ADC) circuitry within the PLC. This raw value is typically a numerical representation of the voltage or current level measured by the analog input channel.
PLCs often use a range of values, such as 0-4095 for a 12-bit ADC, to represent the analog input signal. The actual voltage or current level is converted into a digital value within this range. This digital raw value can then be further processed, scaled, or used in control algorithms within the PLC program.
For example, if the analog input voltage range is 0-10 volts and the PLC ADC has a resolution of 12 bits, the digital raw value could range from 0 to 4095, where 0 represents 0 volts and 4095 represents 10 volts.
The digital raw value of a PLC analog input or output depends on several factors:
Analog-to-Digital Converter (ADC) Resolution: The resolution of the ADC determines the number of digital steps or values available to represent the analog signal. For example, a 12-bit ADC can represent the analog signal with 2^12 (4096) digital steps.
Signal Range: The range of the analog input or output signal is also important. For instance, if the analog input signal ranges from 0 to 10 volts, and the ADC is 12-bit, each step would represent approximately
10vdc or 20mA
4096
4096
10
volts.
Scaling: PLCs often allow for scaling of analog signals. This means that the raw digital value obtained from the ADC can be mapped to a different range of values, such as engineering units (e.g., degrees Celsius, pressure in psi, etc.).
Without specific details about the PLC model, the resolution of the ADC, and the scaling applied, it's challenging to provide an exact digital raw value for an analog input or output. However, once these details are known, it's straightforward to calculate or interpret the digital raw value.