janitza UMG 512-Pro, User Manual And Technical Data

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UMG 512-PRO
12.11.2 Profibus
Profibus profiles
A Profibus profile contains the data to be ex-
changed between a UMG and a PLC. Four Profib-
us profiles are preconfigured at the factory.
Using a Profibis profile you can:
·Retrieve measured values from the UMG,
·Set the digital outputs in the UMG,
·Query the status of the digital inputs in the UMG.
Each Profibus profile can contain a maximum of
127 bytes of data. If more data needs to be trans-
mitted, you can create further Profibus profiles.
Each Profibus profile has a profile number, which
is sent from the PLC to the UMG.
With the GridVis® software, you can directly edit
16 Profibus profiles (profile numbers 0..15).
You can create additional Profibus profiles (profile
numbers 16..255) via Jasic programs.
Factory preconfigured Profibus profiles can be
modified later on.
Device master file
The device master file, abbreviated GSD file, de-
scribes the Profibus properties of the UMG. The
GSD file is required by the configuration program
of the PLC.
The device master file for your device has the file
name "JAN0EDC.GSD" and is available on the
Janitza homepage.
Variable definition
All system variables and global variables
1)
can be
scaled individually and converted to one of the
following formats:
·8, 16, 32-bit signed or unsigned integer.
·32 or 64-bit floating format.
·Big Endian
= High byte before low byte.
·Little Endian = Low byte before high byte.
1)
Global variables are defined by the user in Jasic and are available to every
interface in the device.