FB_DALIV2SendDALICommand

FB_DALIV2SendDALICommand 1:

The function block FB_DALIV2SendDALICommand is used for the general sending of a DALI command, defined by command number and, if necessary, transfer parameters. Moreover, it is possible to set whether the command is sent twice in succession and whether to wait for a response. The latter can be used, for example, to realize a fast sequence of step-up commands.

FB_DALIV2SendDALICommand 2: Inputs

VAR_INPUT
  bStart                       : BOOL;
  nAddr                        : BYTE;
  eAddrType                    : E_DALIV2AddrType := eDALIV2AddrTypeShort;
  eCommandPriority             : E_DALIV2CommandPriority := eDALIV2CommandPriorityMiddle;
  nCommand                     : INT := 0;
  nParameter                   : BYTE := 0;
  bWaitingForDALISlaveResponse : BOOL := FALSE;
  bRepeatCommand               : BOOL := FALSE;
  bSuppressResponseBuffer      : BOOL := FALSE;
  nDeviceType                  : BYTE := 0;
END_VAR

Name

Type

Description

bStart

BOOL

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

nAddr

BYTE

The address of a device or of a group

eAddrType

E_DALIV2AddrType

Short address, group address or broadcast

eCommandPriority

E_DALIV2CommandPriority

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

nCommand

INT

Number of the DALI command to be sent

nParameter

BYTE

Parameter for the value transfer

bWaitingForDALISlaveResponse

BOOL

If FALSE there is no waiting for the response of the DALI control gear. Its application makes no sense in connection with any kind of query command.

bRepeatCommand

BOOL

Decides whether the command is to be sent twice in succession.

bSuppressResponseBuffer

BOOL

If TRUE, the internal software buffer is not filled with the response from function block FB_DALIV2Communication.

nDeviceType

BYTE

Identifier for the device type

Value

Description

0

Standard device

1

Device for emergency lighting.

2

Device for discharge lamps.

3

Device for low-voltage halogen lamps.

4

Device for dimming incandescent lamps.

5

Device for converting digital signals into DC signals.

6

Device for light emitting diodes (LEDs).

FB_DALIV2SendDALICommand 3: Inputs/outputs

VAR_IN_OUT
  stCommandBuffer : ST_DALIV2CommandBuffer;
END_VAR

Name

Type

Description

stCommandBuffer

ST_DALIV2CommandBuffer

Reference to the internal structure for communication with FB_KL6811Communication (KL6811) or FB_KL6821Communication (KL6821).

FB_DALIV2SendDALICommand 4: Outputs

VAR_OUTPUT
  bBusy         : BOOL;
  bError        : BOOL;
  nErrorId      : UDINT;
  nResponseData : BYTE;
END_VAR

Name

Type

Description

bBusy

BOOL

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

bError

BOOL

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

UDINT

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).

nResponseData

BYTE

The value received from the DALI control gear, if a query command has been called.

Requirements

Development Environment

PLC library to include

TwinCAT from v3.1.4020.14

Tc2_DALI from v3.4.3.0