spi.BeforeWriteOutputs (METH) ¶ METHOD BeforeWriteOutputs : INT This method can be overloaded by extending FBs. It is used to write the outputs to the device at the end of the cycle. Always including a call of the base implementation with super^.BeforeWriteOutputs() In the base implementation, the body of the FB is called. InOut: Scope Name Type Return BeforeWriteOutputs INT

spi.transfer (METH) ¶ METHOD transfer : BOOL This method is used to transfer data via SPI InOut: Scope Name Type Initial Comment Return transfer BOOL Input pabyTxBuffer POINTER TO ARRAY [0..255] OF BYTE pointer to send buffer pabyRxBuffer POINTER TO ARRAY [0..255] OF BYTE pointer to receive buffer udiLen UDINT 3 length to transfer uiDelayus UINT 5 delay in µs

spi.transferExt (METH) ¶ METHOD transferExt : BOOL This method is used to transfer data via SPI. In contrast to the method ‘transfer’ one can specify the communication clock. InOut: Scope Name Type Initial Comment Return transferExt BOOL Input pabyTxBuffer POINTER TO ARRAY [0..255] OF BYTE pointer to send buffer pabyRxBuffer POINTER TO ARRAY [0..255] OF BYTE pointer to receive buffer udiLen UDINT 3 length to transfer uiDelayus UINT 5 delay in µs udiSpeedHz UDINT 0 send clock in Hz; if 0, _diMaxSpeed is used

spi.Operational (PROP) ¶ PROPERTY Operational : BOOL This property has to return TRUE , when the device is configured and running

spiMaster.transferExt (METH) ¶ METHOD transferExt : BOOL This method is used to transfer data via SPI InOut: Scope Name Type Initial Comment Return transferExt BOOL Input pabyTxBuffer POINTER TO ARRAY [0..255] OF BYTE pointer to send buffer pabyRxBuffer POINTER TO ARRAY [0..255] OF BYTE pointer to receive buffer udiLen UDINT 3 length to transfer uiDelayus UINT 5 delay in µs udiSpeedHz UDINT 0 send clock in Hz; if 0, _diMaxSpeed is used

i2c.AfterReadInputs (METH) ¶ METHOD AfterReadInputs : INT This method can be overloaded by extending FBs. It is used to read in the inputs of the device in the beginning of the cycle. Always including a call of the base implementation with super^.AfterReadInputs() In the base implementation, the body of the FB is called. InOut: Scope Name Type Return AfterReadInputs INT

i2c.BeforeWriteOutputs (METH) ¶ METHOD BeforeWriteOutputs : INT This method can be overloaded by extending FBs. It is used to write the outputs to the device at the end of the cycle. Always including a call of the base implementation with super^.BeforeWriteOutputs() In the base implementation, the body of the FB is called. InOut: Scope Name Type Return BeforeWriteOutputs INT

i2c.read (METH) ¶ METHOD read : DINT This method is used to directly read nBufferLen bytes from the CharDevice. InOut: Scope Name Type Comment Return read DINT Number of bytes that have actually been read Input pbyBuffer POINTER TO BYTE pointer to area, where the bytes are copied nBufferLen UDINT number of bytes to read

i2c.read8 (METH) ¶ METHOD read8 : USINT This method is used to read the data byte of one register The function therefore first writes the register number and then reads one byte. InOut: Scope Name Type Comment Return read8 USINT data content Input usiRegister USINT register to read

i2c.readregister (METH) ¶ METHOD readregister : DINT This method is used to read a number of data bytes starting from a certain register The function therefore first writes the register number and then reads the defined number of bytes. InOut: Scope Name Type Comment Return ReadRegister DINT Number of bytes that have been actually read Input usiRegister USINT register number, where to start reading pbyBuffer POINTER TO BYTE pointer to buffer where to store the read data nBufferLen UDINT number of bytes to read