Access from the user program
KL6811
43
Version: 2.0.0
5
Access from the user program
5.1
Process image
In the process image, the KL6811 is represented with 3 bytes of input and output data. These are organized
as follows:
Byte offset (without word
alignment*)
Byte offset (with word
alignment*)
Format
Input data
Output data
0
0
Byte
Status byte (SB)
Control byte (CB)
1
2
Word
DataIN
DataOUT
*) Word alignment: The Bus Coupler places values on even byte addresses
Process data words in DALI mode
Process output word (DataOUT)
Bit
15
14
13
12
11
10 9
8
7
6
5
4
3
2
1
0
Name
Y
Address bits (A)
S
Command (X)
Legend
Bit
Name
Description
15
Y
0
bin
Address bits 9 to 14 contain a DALI short address.
1
bin
Address bits 9 to 14 contain a DALI group address or a DALI collective
call.
14 to 9
Address bits (A) 0
bin
DALI short address, DALI group address or DALI collective call
8
Selection bit (S) 0
bin
Bits 0 to 7 contain a lamp power value.
1
bin
Bits 0 to 7 contain a DALI command.
7 to 0
Command (X)
Lamp power value or DALI command*
*) A list of DALI commands can be found in Chapter
.
Commands received by the DALI slaves
Please note that DALI slaves can only receive commands once their load side is supplied with
power (230 V), since the PIC (single-chip micro-controller) of a DALI slave is typically supplied via
the load voltage.
Process input word (DataIN)
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
reserved
OK
Parameter
Legend
Bit
Name
Description
15 to 9
-
reserved
8
OK
0
bin
Bits 0 to 7 do not contain valid data
1
bin
Bits 0 to 7 contain the valid response of a DALI slave
7 to 0
Parameter
Response of a DALI slave
Содержание KL6811
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