Download Manual - Festo

4. Commissioning
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 addresses 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 number of bits of the process data channel of all the previous 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).
SPC200-COM-IBS 0503a
4-23