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| en:automation:02-glossary:analog-inputs-hidden [2020/08/20 11:02] – mkudlacek | en:automation:02-glossary:analog-inputs-hidden [2025/10/10 11:11] (current) – added edge ofojt | ||
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| Analog inputs (AI) are for measuring analog values such as DC voltage, current and resistance. These values are produced by sensors which indicate multiple states such as thermometers, | Analog inputs (AI) are for measuring analog values such as DC voltage, current and resistance. These values are produced by sensors which indicate multiple states such as thermometers, | ||
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| ===== Analog inputs on Neuron and Axon ===== | ===== Analog inputs on Neuron and Axon ===== | ||
| The functionality of AIs on Neuron and Axon is different on Group 1 and Group 2/3 and Neuron extensions. | The functionality of AIs on Neuron and Axon is different on Group 1 and Group 2/3 and Neuron extensions. | ||
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| Changing between modes depends on the [[en: | Changing between modes depends on the [[en: | ||
| - | /* | + | |
| ==== Measuring voltage ==== | ==== Measuring voltage ==== | ||
| ==== Measuring current ==== | ==== Measuring current ==== | ||
| - | */ | + | |
| ===== Analog inputs on Unipi 1.1 ===== | ===== Analog inputs on Unipi 1.1 ===== | ||
| The Unipi 1.1 has two analog inputs and they are only capable of measuring voltage in a range of 0-10V DC. | The Unipi 1.1 has two analog inputs and they are only capable of measuring voltage in a range of 0-10V DC. | ||
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| <WRAP center round alert 60%> | <WRAP center round alert 60%> | ||
| - | For R_sens >= 200ohm, use R_ref = 1k | + | For R_sens >= 200ohm, use R_ref = 1k. For R_sens < 200ohm, use R_ref = 10k |
| - | For R_sens < 200ohm, use R_ref = 10k | + | |
| </ | </ | ||
| - | The value at the AI is calculated from the voltage you read from the AI (Vai) | + | The value at the AI is calculated from the voltage you read from the AI (V_ai) |
| Vcc - V_ai R_ref * R_ai | Vcc - V_ai R_ref * R_ai | ||
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| V_ai R_ref + R_ai | V_ai R_ref + R_ai | ||
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| - | The ```Vcc``` is the applied voltage (12V in the picture above). | + | The Vcc is the applied voltage (12V in the picture above). |
| + | */ | ||