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en:sw:01-mervis:analog-inputs-hidden [2021/05/03 07:26] avsetula |
en:sw:01-mervis:analog-inputs-hidden [2021/08/05 12:21] avsetula [Reading the input values] |
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| * UniPi controller running Mervis OS | * UniPi controller running Mervis OS | ||
| * Basic project with attached controller a program in FBD mode | * Basic project with attached controller a program in FBD mode | ||
| - | * [[https://www.unipi.technology/power-supplies-c15|24V power supply]] | + | * [[https://www.unipi.technology/power-supplies-c15|24 V⎓ power supply]] |
| * Knowledge of how the [[en:automation:02-glossary:analog-inputs-hidden|analog inputs]] work on UniPi units | * Knowledge of how the [[en:automation:02-glossary:analog-inputs-hidden|analog inputs]] work on UniPi units | ||
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| ===== Introduction ===== | ===== Introduction ===== | ||
| - | The different analog inputs have different modes of operation, see [[en:automation:02-glossary:analog-inputs-hidden|Analog inputs]]. Change between modes in Mervis is done by configuring the UniPi module, therefor the **changes in modes cannot be done in the program** and the program has to be stopped during the configuration. | + | The different analog inputs have different modes of operation, see [[en:automation:02-glossary:analog-inputs-hidden|Analog inputs]]. Change between modes in Mervis is done by configuring the Unipi module, therefor the **changes in modes cannot be done in the program** and the program has to be stopped during the configuration. |
| <WRAP center round info 60%> | <WRAP center round info 60%> | ||
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| Reading the input values for all modes is the same. Once you set the correct mode, you can just simple read a real value from the variable. The variable is called AI_X.Y depending on the Group (number X) and the position in the group (number Y). To include this variable into the program, you need to **[[en:sw:01-mervis:autogen-hidden|Set Autogen]]**. After that, you will see the variable in **Variable Browser** and you will be able to read it in the **Debugging** mode. | Reading the input values for all modes is the same. Once you set the correct mode, you can just simple read a real value from the variable. The variable is called AI_X.Y depending on the Group (number X) and the position in the group (number Y). To include this variable into the program, you need to **[[en:sw:01-mervis:autogen-hidden|Set Autogen]]**. After that, you will see the variable in **Variable Browser** and you will be able to read it in the **Debugging** mode. | ||
| - | <WRAP center round info 60%> | + | <WRAP center round info 80%> |
| - | When reading the value of AO_X.Y in Voltage mode, the value is in volts (value 1.234 = 1.234V). When reading the value in Current mode, the value is in miliampers (value 3.145 = 3.145mA). When reading the value in Resistance mode, tha value is in ohms (value 1012 = 1012Ω) | + | When reading the value of AO_X.Y in Voltage mode, the value is in volts (value 1.234 = 1.234 V⎓). When reading the value in Current mode, the value is in miliampers (value 3.145 = 3.145 mA). When reading the value in Resistance mode, tha value is in ohms (value 1012 = 1012 Ω) |
| </WRAP> | </WRAP> | ||
