·
Repeater function; signal regeneration increases the possible line lengths and
number of nodes in the system.
·
Several optical data transmission paths can be connected in series. In this way it
is, for example, possible to transmit data between several high-bay storage and
retrieval units in one storage aisle (see Fig. 13).
·
Trouble-free data transmission with Profibus FMS systems in Multi-Master confi-
guration. In this way it is, for example, possible to establish direct data communi-
cation between several high-bay storage and retrieval units located in different
storage aisles (indirect series connection, see Fig. 14).
Fig. 14: Indirect series connection
Selector switch during loss of visual contact
Located on the Profibus module next to the DIP switches for baud rate adjustment
(1, 2 and 3) is an additional DIP switch (4) which controls the behavior of the data
transmission units in the event of loss of visual contact (see Chapter 7.3 "Settings
on the Profibus interface module").
If DIP-switch 4 (switch position = 1) is activated and visual contact is lost, it can, for
example on high-bay storage and retrieval units, prevent the formation of a token
on the vehicle.
Compared with the standard setting (switch position = 0), this has the advantage
that, upon re-establishment of visual contact, the system is again stable within a
few milliseconds (see Fig. 15, next page).
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