Advanced Energy MDX II User Manual page 179

When you request the Profibus debug screen, the panel display shows two rows of
hexadecimal numbers. To better understand this information, please examine the following
example.
6 12 4
0 0 1
In the example, the first four bytes in sequence (left to right) represent the last recorded
download bytes (from the Profibus master). (To better understand download bytes, see
"Profibus Download Packet" on page 7-14). In this example, the Profibus master has set
setpoint to a value of 1042 (Command 6: Setpoint = 0412h).
Following the download bytes information are the last recorded upload bytes; these values
comprise the remaining six bytes on the first line and the first eight bytes on the second line.
(To better understand upload bytes, see "Profibus Upload Packet" on page 7-15). In this
example, the Profibus master has requested the setting for the user current limit, which is
15.37 A.
The remaining three bytes on the second line (in the lower, right corner) indicate the unit
address (see page 7-13), the first configuration byte, and the second configuration byte,
respectively. For this example, the unit thinks that it is address 0x04 and that it is configured to
receive 4 download bytes from the Profibus master (0xA3) and to send 14 upload bytes to the
master (0x1D).
Note: Hexadecimal numbers that start with a zero are shortened to the second number only;
thus "0x04" becomes "4".
5700262-R
0
60 0 0 0
Serial Port Connection, Controls and Indicators
MDXII Power Supplies
10 0 0
8F
0 0 0
4 A3 1D
7-59