HCS DAC-42A - CMD 15, Writing and Reading Once the Connected DAC-4 X(A)

DAC-42(A)-x-PN
Page 63
DAC-42(A)-x-PN Manual
Revision: 1.0 22.01.2024
10.4.6 CMD 15, Writing and Reading once the connected DAC-4x(A)
The CMD 15 makes it possible to send and receive process data from the DAC4-4x(A) connected to the Profinet node.
The meaning of the process values depending on the mode of the DAC4-4x(A) is working at.
See □ Chapter “9.5 CMD = 15, structure of Profinet telegram definition, depending on SW Versions“, page 49
Also, the Control-Byte is depending on the working mode. Explanation of the bits
See □ Chapter “9.5.1.3 Explanation of special functions and module state bits“, page 50
An CMD 15 access is done as followed:
• Define the number of slaves SNUM of the modules connected to the Profinet node. In case of DAC-4x(A), only a
single slave can be connected.
For single slave #SNUM := 1;.
• Setup the CMD: # CMD := 15;
• Write the process data you want to the DAC-4x(A) in the structure provided.
•
Structure of the transmit data set:
• Structure of the receive data set
• If an error has occurred, the cause of the error can be analyzed by evaluating the outputs #COM_xxxxx of the
function block.
Control Byte
Process values to DAC-4x(A)
DAC-4x(A) input structure
Status Word
Process values from DAC-4x(A)