4
Profibus Profile (General)
The Power Analyzer can administrate 255 profibus profiles (16 profiles in the configuration). Each
profibus profile contains a maximum of 128 data bytes. The first data byte of the output range of the
PLC always contains the profile number of the profibus profile requested by the Power Analyzer. In
order to request a profibus profile, you should write the profile number in the first byte of the output
range of the PLC. All system variables and global variables can be individually scaled and converted
into one of the following formats: 8, 16, 32bit integer with and without signs, 32 or 64bit float format
(Big or Little Endian).
Global variables are variables that are defined by the user in graphic programming or in Jasic and are
available to each interface of the Power Analyzer.
Big-Endian = High Byte before Low Byte.
Little-Endian = Low Byte before High Byte.
PLC
Output range of PLC
1
st
byte = profile number
variables from the 2nd byte
follow for the UMG604
Input range of PLC
1st byte = profile number
feedback
From the 2nd byte, the variables
requested from the UMG604
follow.
Illustration 2
