Write VI
- Updated2023-02-21
- 3 minute(s) read
Write VI
Owning Palette: I2C VIs
Requires: myRIO Toolkit or roboRIO Toolkit
Writes data to an Inter-Integrated Circuit (I2C) slave device. This VI returns the result when finishing writing all the bytes or when timing out.

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Timeout ms specifies the number of milliseconds this VI waits for writing a single byte before timing out. |
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I2C Ref In specifies the reference to the I2C channel. Use the Open VI to open a reference to the I2C channel. Do not modify the I2C Ref In values. |
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Slave Address (7-bit) specifies the address of the slave device to which this VI writes data. You must specify the address in 7-bit. Some I2C devices might have a 8-bit address in which the first 7 bits represent the address and the last bit represents the mode of operation. For these kind of I2C devices, you must specify Slave Address (7-bit) using the seven most significant bits. |
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Bytes to Write specifies the data to write to the I2C slave device. |
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error in describes error conditions that occur before this node runs. This input provides standard error in functionality. |
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Keep Bus Busy specifies whether to keep the I2C channel open so that you can perform additional operations. For example, if a slave device requires a write operation followed by a read operation to perform a command, you must set Keep Bus Busy to TRUE. The default is FALSE. |
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I2C Ref Out returns the reference to the I2C channel that you specify. |
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error out contains error information. This output provides standard error out functionality. |







