BONFIGLIOLI ACTIVE Cube ACU 201-11

18.9 Converter Profibus from/to Internal Notation
The Converter Profibus/Internal notation can convert a 16 bit Word into an internal
32 Bit frequency value and vice versa. This is useful in example, when several devic-
es
are linked together via Systembus and for commercial reasons only one device is
equipped with a Profibus Option. Through the routing of the Profibus Word via the
Systembus (“Tunneling”) the necessary bandwidth can be reduced and the parame-
terization of th
e “Gateway” (Systembus Master with Profibus Slave communication)
be simplified. The converter is used in this case in a device without Profibus module
to convert the Profibus Notation into an internal reference value.
Parameter Settings
No. Description Min. Max. Fact. sett.
1370 In-F-PDP-word 1 Selection
1371 In-F-PDP-word 2 Selection
1372 In-F-intern long 1 Selection
1373
In-F-intern long 2
Selection
1374 In-F-Convert Reference 0.01 Hz 999.99 Hz 50.00 Hz
A similar procedure can be used to convert in example the Actual Frequency into a
value according to Profibus notation.
The converter can also be used for other purposes, in example when using the inter-
nal PLC programming.
In-F-PDP-word 1 1370 and In-F-PDP-word 2 1371
convert the Profibus Notation
into the internal Frequency. 0x4000 in Profibus-Notation (=100 %) refers to In-F-
Convert Reference
1374 in Hz.
In-F-intern-long 1 1372 and In-F-intern-long 2 1373
convert an internal frequency
value into Profibus Notation. 0x4000 in Profibus-Notation (=100 %) refers to In-F-
Convert Reference
1374 in Hz.
The Profibus Notation is limited to values from -
200 % (0x8000) to +200 %
(0x7FFF).
0x4000
= 100 %
= In-F-Convert Reference 1374
0x7FFF
= 200 %
= 2x In-F-Convert Reference 1374
0x8000
= -200 %
= -2x In-F-Convert Reference 1374
0xC000
= -100 %
= -In-F-Convert Reference 1374
The values converted this way can be used as internal source.
774 – Out-F-PDP-Conv1-long1 as output of
In-F-PDP-word 1 1370 (Profibus-Not.

Frequency)
775 – Out-F-PDP-Conv1-long2 as output of
In-F-PDP-word 2 1371 (Profibus-Not.

Frequency)
776 – Out-F-PDP-Conv1-word1 as output of
In-F-PDP-long 1 1372 (Frequency

Profibus-Not.)
777 – Out-F-PDP-Conv2-word2 as output of
In-F-PDP-long 2 1373 (Frequency

Profibus-Not.)
256 Operating Instructions ACU 06/13