Operating Principle - Leuze electronic DDLS 200 Technical Description

Features of the DDLS 200
The fact that bus systems are found in nearly all areas of industry places high demands on data trans-
mission systems. The DDLS 200 fulfills these requirements, particularly with regard to:
• Transmission safety
• Minimum transmission times (real-time capable)
• Deterministic transmission
The DDLS 200 data transmission system, which is available in several model variations, makes pos-
sible the contact-free transmission of the following bus protocols:
• PROFIBUS FMS, DP, MPI, FMS - DP mixed-operation, up to max. 1.5Mbit/s, PROFISAFE
• INTERBUS 500kbit/s, RS 422 general, copper cable
• INTERBUS 2Mbit/s / 500kbit/s, fiber-optic cable
• Data Highway + (DH+) from Rockwell Automation (Allen Bradley)
• Remote I/O (RIO) from Rockwell Automation (Allen Bradley)
• DeviceNet
• CANopen
• Ethernet for all protocols based on TCP/IP or UDP
Other bus systems on request.
1.4

Operating principle

To prevent the devices from mutually interfering with one another during data transmission in duplex
operation, they use two different frequency pairs. These are indicated by the type designation ....1
and ....2 as well as the label frequency f
DDLS 200/XXX.1-YY
Figure 1.1:Operating principle
The receiving level is checked at both devices and can be read on a bar graph LED indicator. If the
receiving level drops below a certain value, e.g. due to increased soiling of the optics, a warning output
is activated.
All work on the device (mounting, connecting, aligning, indicator/operating elements) is performed
comfortably on the front side.
Leuze electronic
and frequency f
1
Optical data transmission on
two frequencies
f
2
on the control panel.
2
DDLS 200
General Information
DDLS 200/XXX.2-YY
f
1
5