HCS DAC-42A - Complex Commands; CMD = 15, Master Writes Multiple Parameters (8 Bytes); CMD = 15, Response from DAC-4 X(A) (9 Bytes)

DAC-42(A)-x-PN
Page 47
DAC-42(A)-x-PN Manual
Revision: 1.0 22.01.2024
9 Complex commands
9.1 CMD = 15, Master writes multiple parameters (8 bytes)
(Fast single-slave command)
Write first…
Byte Abbreviation Description
0
TADR
Telegram address, defined by the user, Range 0..255, 0..0xFF
1
SNUM
= 01
Single slave, always 01
2
CMD
Command: 15 = Write multiple parameter by the master
3
DAT1.1
Control
-
Byte
Byte for special functions
4
DAT1.2H
Process Value1
High byte of first „analogue” value
5
DAT1.2L
Low byte of first „analogue” value
6
DAT1.3H
Process Value2
High byte of second „analogue” value
7
DAT1.3L
Low byte of second „analogue” value
Overall telegram length in bytes
TADR Telegram address, defined by the Profinet-Master. (defined by the user) Range 0..255
SNUM Only one slave is connected. SNUM = 01.
CMD Command: 15 = Write multiple parameters by the master
DAT1.1 Control-Byte. One data byte in HEX, for special functions
0x00 == 0
0xFF == 255
DAT1.2H, DAT1.2L Process Value1: Two data bytes in HEX, without decimal sign, for „analogue” values
0x7FFF == +32767
0x8000 == -32768
DAT1.3H, DAT1.3L Process Value1: Two data bytes in HEX, without decimal sign, for „analogue” values
0x7FFF == +32767
0x8000 == -32768
9.2 CMD = 15, Response from DAC-4x(A) (9 bytes)
This response telegram with SADR = 1 is send back by the DAC-4x(A).
Write first…
Byte Structure Abbreviation Description
0
Telegram
header
TADR
Telegram address, defined by the user, Range 0..255, 0..0xFF
1
SADR
= 01
Slave address
2
CMD
Command: 15 = Write multiple parameter by the master
3
Data of
SADR
DAT.1H
Status Word
High byte of module state
4
DAT.1L
Low byte of module state
5
DAT.2H
VALUE1
High byte of first „analogue” value
6
DAT.2L
Low byte of first „analogue”
value
7
DAT.3H
VALUE2
High byte of second „analogue” value
8
DAT.3L
Low byte of second „analogue” value
…Write last
TADR Telegram address, defined by the Profinet-Master.(set by the user)
SADR Slave address, normally always 01
CMD Command: 15 = Write multiple parameters by the master
DAT.1H,DAT.1L Status word. Two data bytes in HEX, , for module state
0x0000 == 0
0xFFFF == 65535
DAT.2H, DAT.2L, VALUE1
DAT.3H, DAT.3L VALUE2. Two data bytes in HEX, without decimal sign, for analogue values
0x7FFF == +32767
0x8000 == -32768