ModTcpMast2 (FB)

FUNCTION_BLOCK ModTcpMast2 EXTENDS ModTcpMast

Function Block serves to send Modbus on TCP/IP requests to a server and evaluate the response

InOut:

Scope	Name	Type	Initial	Comment	Inherited from
Input	Eth	BYTE	ETH1	Index number of the assigned Ethernet interface - input is ignored, existing for compatibility reasons only	ModTcpMast
	IPAdr	DWORD	0	IP address of the remote Modbus TCP Server device	ModTcpMast
	UnitID	BYTE	0	Unit identifier for the Modbus TCP frame	ModTcpMast
	Fct	BYTE	0	Function Code as specified in Modbus Protocol Specification	ModTcpMast
	Addr	WORD	0	Operand/Register address in remote Modbus TCP Server device	ModTcpMast
	Nb	WORD	0	Amount of data units to be sent/received	ModTcpMast
	Data	DWORD	0	Address of local buffer for data to be sent or received	ModTcpMast
Output	ErrorID	ERROR_ID	ERROR_ID.NO_ERROR	Code of error occured during execution NO_ERROR Execution successfully completed ERR_NOT_CONFIGURED Modbus TCP not configured ERR_FCT_NOT_SUPPORTED Function code not supported ERR_ILLEGAL_REGISTER_ADDRESS Illegal register address ERR_INVALID_ACCESS Invalid address of local storage of data to read/write, inputs DATA / NB ERR_DATA_SIZE Number of data to read/write exceeds capabilities ERR_INTERNAL_PORTING Porting layer error. Operating system signaled error ERR_INTERNAL_INVALID_HANDLE Illegal argument, unknown instance ‘dwHandle’. Internal error ERR_FAILED_CONNECT Failed to connect to Server ERR_CONNECTION_CLOSED Connection closed or unexpected result reported by stack ERR_TIMEOUT Timeout expired. Server did not respond within specified time ERR_EXCEPT_01_ILLEGAL_FUNCTION Illegal function exception. Exception response by Server containing error code 01 / 16#01 ERR_EXCEPT_02_ILLEGAL_DATA_ADDRESS Illegal data address. Exception response by Server containing error code 02 / 16#02 ERR_EXCEPT_03_ILLEGAL_DATA_VALUE Illegal data value. Exception response by Server containing error code 03 / 16#03 ERR_EXCEPT_04_SERVER_DEVICE_FAILURE Server device failure. Exception response by Server containing error code 04 / 16#04 ERR_EXCEPT_05_SERVER_ACKNOWLEDGE Server acknowledge. Exception response by Server containing error code 05 / 16#05 ERR_EXCEPT_06_SERVER_DEVICE_BUSY Server device busy. Exception response by Server containing error code 06 / 16#06 ERR_EXCEPT_07_SERVER_NO_ACKNOWLEDGE Server no acknowledge. Exception response by Server containing error code 07 / 16#07 ERR_EXCEPT_08_MEMORY_PARITY_ERROR Memory parity error. Exception response by Server containing error code 08 / 16#08 ERR_EXCEPT_09_SERVER_PASSIVE Probably passive Server. Exception response by Server containing error code 09 / 16#09 ERR_EXCEPT_0A_GATEWAY_PATH_UNAVAILABLE Gateway path unavailable. Exception response by Server containing error code 10 / 16#0A ERR_EXCEPT_0B_GATEWAY_TARGET_DEVICE Gateway target device failed to respond. Exception response by Server containing error code 11 / 16#0B ERR_INTERNAL_INVALID_STATE Invalid state, fatal internal error ERR_NO_MEMORY Not enough memory BUSY Busy, call again ERR_INTERNAL_IO Internal error in I/O layer ERR_INTERNAL_ILLEGAL_STATE Protocol stack in illegal state. Fatal internal error ERR_INTERNAL_IO_RETRY Retry I/O operation. Operation not yet completed, function to be called again ERR_INTERNAL_UNEXPECTED_STATE Unexpected state. Fatal internal error ERR_INVALID_TIMEOUT_VALUE Invalid value for response timeout ERR_INVALID_ACCESS Invalid address of local storage of data to read/write ERR_ENDIANESS_NOT_SUPPORTED Endianess / byte order not supported	ModTcpMast
Input	RespTimeout	WORD	DEFAULTS.CONFIG_RESPONSE_TIME	Slave response timeout in ms. Maximum time waiting for a response after having sent a request
	KeepAlive	DWORD	DEFAULTS.CONFIG_KEEP_ALIVE	Open Modbus Time in ms. A connection to a Server stays open after sending a request until the time is expired. If there is another request within this time, the timer is restarted. On expiration the connection is closed.
	ByteOrder	CAA.ENDIANESS	DEFAULTS.CONFIG_BYTE_ORDER	Endianess of data, little or Big Endian; Modbus Standard is Big Endian
	Port	WORD	DEFAULTS.CONFIG_PORT	TCP Port
	ResetOnClose	BOOL	FALSE	Reset connection when closing it (TRUE) or gaceful close (FALSE) like ModTcpMast
	ConnectTimeout	DWORD	DEFAULTS.CONFIG_CONNECT_TO	Connect timeout [ms]. Value 0 corresponds to OS default