Safe_SDG_Producer (FB)¶

FUNCTION_BLOCK Safe_SDG_Producer

Safe_SDG_Producer does produce a J1939 Safety SDG supposed to be send via a J1939SafetyStd.Unsafe_SDG_Sender.

The inputs S_usiSHMPriority, S_usiSDMPriority, S_dwPGN, S_tTransmissionRate and S_usiSrcAddr get sampled at xEnable rising edge.

The inputs S_abyData and S_usiDataLength can be set any time.

For an overview of general data flow view see the library main documentation and the J1939 Safety example.project.

InOut:

Scope	Name	Type	Initial	Comment
Input	`xEnable`	`BOOL`	FALSE	Enable SDG production. The inputs S_usiSHMprio, S_usiSDMprio, S_PGN, S_usiSrcAddr and S_tRefreshTime are sampled with a rising edge.
	`S_usiSHMPriority`	SAFEUSINT (0..J1939_CONSTANTS.usiMAX_PRIORITY)	1	SHM send priority: 0-7: priority (0: high, 7: low) Note: The SHM priority shall be a value with the same or higher priority (lower value) as the SDM priority.
	`S_usiSDMPriority`	SAFEUSINT (0..J1939_CONSTANTS.usiMAX_PRIORITY)	1	SDM send priority: 0-7: priority (0: high, 7: low);
	`S_dwPGN`	`DWORD`	0	Parameter Group Number (PGN).
	`S_tTransmissionRate`	`TIME`	TIME#0ms	Transmission rate to send the SDG data.
	`S_usiSrcAddr`	`USINT`	0	Source Address.
	`S_abyData`	ARRAY [0..(J1939_CONSTANTS.usiSDM_MAX_DATALENGTH - 1)] OF SAFEBYTE	[0, 0, 0, 0, 0, 0, 0, 0]	SDG data to transmit.
	`S_usiDataLength`	SAFEUSINT (0..J1939_CONSTANTS.usiSDM_MAX_DATALENGTH)	0	Length of SDG data to transmit.
Output	`S_xBusy`	`BOOL`	FALSE	In operation.
	`S_xError`	`BOOL`	FALSE	Error occured.
	`S_eErrorID`	ERROR	ERROR.NO_ERROR	Error status.
	`S_SDGS`	`J1939SafetyItf.SAFETY_DATA_GROUP_SAFE`		SDG data to be send by a J1939SafetyUnsafe.Unsafe_SDG_Sender.