I2C_PCF8574_write block
Short summary
Name |
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→POU type |
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Category |
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Graphical interface |
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Available since |
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Functionality
The block sets the outputs of PCF8574 (→I2C port expanders) to given values.
For more information on the PCF8574 chip see for example: http://www.nxp.com/documents/data_sheet/PCF8574.pdf (product specification by manufacturer NXP)
Inputs
|
Identifier |
Description |
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---|---|---|---|
Inputs: |
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the handle for the I2C device file opened by the |
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the I2C address of the PCF8574 (port expander) |
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the states of the PCF8574 outputs |
Input EN
and output ENO
are available when →calling the block. See "Execution control: EN, ENO" for information on input EN
and output ENO
.
See:
-
"Blocks for safe logic" whether this block is supported for developing safety-relevant applications.
-
"Highlighting safe logic in the FBD-editor" for the effects when using the block as a block for safe logic.
Example for usage within ST-editor
At present, there is no example.