HCS DAC-42A - CMD = 15, Error from DAC-4 X(A) (4 Bytes); Examples, CMD = 15, Single Slave, DAC-4 X(A)

DAC-42(A)-x-PN
Page 48
DAC-42(A)-x-PN Manual
Revision: 1.0 22.01.2024
9.3 CMD = 15, Error from DAC-4x(A) (4 bytes)
Write first…
Byte Abbreviation Description
0
TADR
Telegram address, defined by the write command, Range 0..255, 0..0xFF
1
SADR
Slave address
2
ERR
Error code
3
EXCE
Exception
…Write last
ERR Error code: 0x8F = write failed
EXCE Exception:
1 = Command not supported
2 = Wrong ID
3 = Wrong Data Value
4 = Writing of ID failed
5 = timeout (Modbus)
6 = Internal checksum error (Modbus)
7 = Invalid number of connected slaves
8 = timeout slave, address wrong or not installed
9 = Profinet node (SADR = 0) send, received data length to small. The data length of the selected
GSD module is too small.
Example for error response:
Module 3 is not installed and SNUM in the master telegram is set to 3
Byte Data Abbreviation Description
0
0x23
TADR
Response telegram address (defined by the write command)
1
0x03
SADR
Actual slave address
2
0x8F
ERR
Error, Bit „7“ with command 0x0F in decimal 15 is set
3
0x08
EXCE
timeout slave, address wrong or not installed
9.4 Examples, CMD = 15, single slave, DAC-4x(A)
E22 is set to 1 and hardware Enable is connected to the DAC-4x(A).
Master writes set value of 1.000 V to slave (module):
Byte Data Abbreviation Description
0
0x23
TADR
Telegram address, defined by the user, Range 0..255, 0..0xFF
1
0x01
SNUM
0x01 means single slave
2
0x0F
CMD
0x0F in decimal 15
3
0x00
DAT1.1
Control byte
, 0x00 (default value, no bus
-
disable)
4
(1000)
DAT1.2H
Process Value1 = A1.01, set value branch 1
0x03E8 ( = 1000 in decimal = 1.000V)
5
DAT1.2L
6
(0)
DAT1.3H
Process Value2 = A1.02, feedback value branch 1
0x0000 ( = 0 in decimal = 0.000V)
7
DAT1.3L
Response slave (module) no.1:
Byte Data Abbreviation Description
0
0x23
TADR
Response telegram address (defined by the write command)
1
0x01
SADR
Actual slave address
2
0x0F
CMD
0x0F in decimal 15
3
0x40
DAT1.1H
Status word
High byte of module state = 0x40 (HW enable = active)
4
0x00
DAT1.1L
Low byte of module state = 0x00
5
0x00
(0)
DAT1.2H
VALUE1 = d1.11
0x0000 ( = 0 in decimal = 0.000V )
6
0x00
DAT1.2L
7
0x03
(1000)
DAT1.3H
VALUE2 = d1.10
0x03E8 ( = 1000 in decimal = 1.000V)
8
0xE8
DAT1.3L
(x) = value in decimal.