FB_DALIV2x304QueryHysteresisMin

FB_DALIV2x304QueryHysteresisMin 1:

Queries the value for the minimum possible hysteresis.

VAR_INPUT

bStart            : BOOL;
nAddr             : BYTE;
eAddrType         : E_DALIV2AddrType := eDALIV2AddrTypeShort;
nInstAddr         : BYTE := 0;
eInstAddrType     : E_DALIV2InstAddrType := eDALIV2InstAddrTypeNumber;
eCommandPriority  : E_DALIV2CommandPriority := eDALIV2CommandPriorityMiddle;

bStart: The function block is activated by a positive edge at this input.

nAddr: The address of a participating device or of a group.

eAddrType: Short address, group address or broadcast (see E_DALIV2AddrType).

nInstAddr: Address of the instance within the DALI control unit.

eInstAddrType: Defines the access mode to the desired instance within the DALI control unit (see DALIV2InstAddrType).

eCommandPriority: Priority (high, medium or low) with which the command is processed by the library (see E_DALIV2CommandPriority).

VAR_OUTPUT

bBusy          : BOOL;
bError         : BOOL;
nErrorId       : UDINT;
nHysteresisMin : BYTE;

bBusy: When the function block is activated the output is set, and it remains active until execution of the command has been completed.

bError: This output is switched to TRUE as soon as an error occurs during the execution of a command. The command-specific error code is contained in nErrorId. Is reset to FALSE by the execution of a command at the inputs.

nErrorId: Contains the command-specific error code of the most recently executed command. Is reset to 0 by the execution of a command at the inputs. (See error codes)

nHysteresisMin: Minimum possible hysteresis.

VAR_IN_OUT

stCommandBuffer   : ST_DALIV2CommandBuffer;

stCommandBuffer: Reference to the internal structure for communication with the function block FB_KL6821Communication() (KL6821).

Requirements

Development environment

required PLC library

TwinCAT from v3.1.4022.4

Tc2_DALI from v3.6.2.0