Led Indicators Profibus - Leuze electronic DDLS 200 Series Original Operating Instructions

PROFIBUS / RS 485
Changeover PROFIBUS / RS 485 (default: 'Off' = PROFIBUS)
The DDLS 200 has, as a standard function, a repeater function (signal processing) and is, with regard
to the PROFIBUS, to be viewed as a repeater.
NOTE
Please observe the guidelines specified in EN 50170 (Vol. 2) regarding the use of
repeaters. The delay time of a data transmission path is maximum 1.5 µs + 1 TBit.
It is also possible to transmit other RS 485 protocols. For PROFIBUS applications, S3-4
should be set to 'Off' ('0'). DIP-switch S3-4 can be used to switch off the repeater function
for non-PROFIBUS applications (S3-4 = 'On'). In this case, no signal regeneration takes
place; the RS 485 protocol must, however, still provide certain features
Please contact the manufacturer if you would like to use the DDLS 200 for general RS 485
protocols.
5.4

LED indicators PROFIBUS

In addition to the indicators and operational controls present in all device models (bar graph, buttons,
LEDs AUT, MAN, ADJ; see chapter 11.1 "Indicators and operational controls"), the PROFIBUS model
also has the following indicators:
PWR Tx Rx
Figure 5.5: Indicators and operational controls of the PROFIBUS model
24
LED PWR: green
green flashing = transmitter / receiver unit switched off
AUT
MAN
ADJ
off
LED Tx: green
green flashing = with baud rates set to very low values,
off
LED Rx: green
green flashing = with baud rates set to very low values,
off
DDLS 200
= operation indicator
via switching input IN or hardware error
= no operating voltage
= data is being transmitted to the bus
the LEDs Tx and Rx flicker. At very
high baud rates (> 50kBit/s), flashing
LEDs Tx and Rx indicate faulty bus
communication.
= no data on the transmission line
= data is being received by the bus
the LEDs Tx and Rx flicker. At very
high baud rates (> 50kBit/s), flashing
LEDs Tx and Rx indicate faulty bus
communication.
= no data on the receiving line
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