1.2
Important terms
DDLS 170
Type designation for the optical data transmission system from Leuze electronic,
consisting of two synchronized data transmission units.
DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx
Type designation of the further-developed data transmission units. One data trans-
mission system consists of two DDLSs.
DDLS 170.1
DDLS 170.2
Type designation of the data transmission units available up to now. One data
transmission system consists of two DDLSs.
FSK modulation
Modulation by means of frequency shift keying.
FSK frequencies
Frequencies at which data are transmitted between DDLS units. The
DDLS 170/xxx.1-xxxx (DDLS 170.1) and DDLS 170/xxx.2-xxxx (DDLS 170.2) each
have their own assigned frequency pairs.
Full duplex
Simultaneous transmission and reception of data.
Half-duplex operation
Data are alternately transmitted and received only.
Transparent
The data transmission units function as passive transmission members in a bus sy-
stem. The telegram structure is transmitted optically without being altered. The
transmitted data information are not subjected to interference.
Remote multifunction
display
Two highly visible LEDs for displaying reception level during coarse adjustment.
Bar graph
Close-up multifunction display for displaying reception level during fine adjustment.
INTERBUS
Bus system according to DIN 19258.
Profibus
Bus system according to DIN 19245.
Suconet K
Transmission system produced by Klöckner Möller
1.3
Declaration of Conformity
The DDLS 170 data transmission system was designed and manufactured in ac-
cordance with applicable European normatives and guidelines.
Notice:
A corresponding Declaration of Conformity can be requested from the manufactu-
rer.
The manufacturer of the product, Leuze electronic GmbH + Co. in D-73277
Owen/Teck, maintains a certified quality management system in accordance with
ISO 9001.
4
DDLS 170
Leuze electronic
