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Physical addressing – Festo Кабели и принадлежности User Manual

Page 57

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Physical addressing

PLEASE NOTE
Use the logical addressing or the bus configuration
via the CMD software, providing your INTERBUS
module permits this.
In this way you can avoid input and output ad-
dresses being shifted during later extensions.

The first bus slave is addressed with the basis address
(BA) of the INTERBUS module. The address of the
next bus slave is obtained by adding the relevant num-
ber of bits of the process data channel of all the pre-
vious slaves to the basis address. The procedure must
be carried out separately for inputs and outputs.

Example of physical addressing:

1st.
terminal

2nd.
SPC200

3rd.
SPC200

4th.
terminal

5th.
terminal ...

Process data
channel bits

32

64

*)

48

*)

32

16

Physical
address

BA

BA+32

BA+32+64

BA+32+64+
48

BA+32+64+
48+32+....

*)

The field bus module of the SPC200 occupies the appropriate number of bits
depending on the operating mode of the SPC200 and on the I/O configuration set with
WinPISA (inputs/outputs, see Chapters 4.2.2 and 4.1.3).

4. Commissioning

SPC200-COM-IBS 0503a

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