CAA SerialCom ¶ Enums DTR_CONTROL (Enum) ERROR (Enum) PARITY (Enum) RTS_CONTROL (Enum) STOPBIT (Enum) Function Blocks Close (FunctionBlock) Open (FunctionBlock) Read (FunctionBlock) Write (FunctionBlock) Global Variables CAA_Parameter_Constants (GVL) Structs PARAMETER (Struct)

Enums ¶ DTR_CONTROL (Enum) ERROR (Enum) PARITY (Enum) RTS_CONTROL (Enum) STOPBIT (Enum)

DTR_CONTROL (ENUM) ¶ TYPE DTR_CONTROL : Configuration for DTR control (see parameter udiDtrControl) Attributes: qualified_only InOut: Name Initial Comment DTR_CONTROL_DISABLE 0 0 = Disables the DTR line DTR_CONTROL_ENABLE 1 = Enables the DTR line DTR_CONTROL_HANDSHAKE 2 = Enables DTR handshaking

ERROR (ENUM) ¶ TYPE ERROR : This data structure describes errors eventually occurring while working with functions of CAA_SerialCom library. Values ranging from 5000 to 5099 have been reserved for these errors within the prefix registration (LibraryRegistry.chm). Attributes: qualified_only InOut: Name Initial Comment NO_ERROR 0 no error FIRST_ERROR 5000 first library specific error TIME_OUT 5001 = timeout error ABORT 5002 = abort input active HANDLE_INVALID 5003 = handle invalid ERROR_UNKNOWN 5004 = unknown error WRONG_PARAMETER 5005 = wrong parameter WRITE_INCOMPLETE 5006 = write incomplete FIRST_MF 5050 first manufacture specific error LAST_ERROR 5099 last library specific error

PARITY (ENUM) ¶ TYPE PARITY : Supported parity Attributes: qualified_only InOut: Name Initial Comment EVEN 0 0 = even parity ODD 1 = odd parity NONE 2 = no parity

RTS_CONTROL (ENUM) ¶ TYPE RTS_CONTROL : Configuration for RTS control (see parameter udiRtsControl) Attributes: qualified_only InOut: Name Initial Comment RTS_CONTROL_DISABLE 0 0 = Disables the RTS line RTS_CONTROL_ENABLE 1 = Enables the RTS line RTS_CONTROL_HANDSHAKE 2 = Enables RTS handshaking RTS_CONTROL_TOGGLE 3 = Specifies that the RTS line will be high if bytes are available for transmission. After all buffered bytes have been sent, the RTS line will be low.

STOPBIT (ENUM) ¶ TYPE STOPBIT : Supported number of stop bits Attributes: qualified_only InOut: Name Initial Comment ONESTOPBIT 0 0 = 1 stopbit ONE5STOPBITS 1 = 1.5 stopbits TWOSTOPBITS 2 = 2 stopbits

Function Blocks ¶ Close (FunctionBlock) Open (FunctionBlock) Read (FunctionBlock) Write (FunctionBlock)

Close (FB) ¶ FUNCTION_BLOCK Close EXTENDS CBM.ETrig Close a serial com port opened via the FB COM. Open . The output handle hCom must be used here to close the COM port! InOut: Scope Name Type Comment Input hCom CAA.HANDLE Handle to the open COM port. Ist returned by the COM. Open function block. Output eError ERROR Local library error ID (0: no error; 5001: time out)

Open (FB) ¶ FUNCTION_BLOCK Open EXTENDS CBM.ETrig Open a serial com port. The input Parameter s are a list of settings, with which the COM port should be opened. Example: COMPort = 1, Baudrate = 115200, Parity = None, StopBit s = 1 DECLARATION: MyComOpen : COM.Open ; aParamsB115200 : ARRAY [1..7] OF COM.PARAMETER := [ (udiParameterId := COM.CAA_Parameter_Constants.udiPort, udiValue := 1), (udiParameterId := COM.CAA_Parameter_Constants.udiBaudrate, udiValue := 115200), (udiParameterId := COM.CAA_Parameter_Constants.udiParity, udiValue := COM.PARITY.NONE), (udiParameterId := COM.CAA_Parameter_Constants.udiStopBits, udiValue := COM.STOPBIT.ONESTOPBIT), (udiParameterId := COM.CAA_Parameter_Constants.udiTimeout, udiValue := 0), (udiParameterId := COM.CAA_Parameter_Constants.udiByteSize, udiValue := 8), (udiParameterId := COM.CAA_Parameter_Constants.udiBinary, udiValue := 1) ] ; IMPLEMENTATION: So to parameterize the FB looks like: MyComOpen ( usiListLength := SIZEOF ( aParamsB115200 )/ SIZEOF ( COM.PARAMETER ), pParameterList := ADR ( aParamsB115200 )); ... InOut: Scope Name Type Comment Input usiListLength USINT Number of entries in the pParameterList pParameterList CAA.PVOID Pointer to ARRAY of parameter entries Output eError ERROR Local library error ID (0: no error; 5001: time out) hCom CAA.HANDLE specific Outputs