Installation OZD Profi 12M ...
Release
01
07/2017
21
electrical
ports
yellow lights up Signals are being received on the RS 485 bus line.
Signal contact: no signal
red flashes/light
s up
Sporadic interference signals because
– the RS 485 bus line being insufficiently shielded
– an open RS 485 bus line, i.e. it is only connected to
the repeater at one end
– the RS 485 segment is not terminated or only
terminated at one end
– an RS 485 bus terminal or terminal connector has
been plugged in/ pulled out
Signal contact: signal
Permanent interference because
– conductors A and B in the RS 485 bus line have
been transposed
– of an RS 485 bus line short circuit
– the send time has been exceeded caused by a bus
subscriber in a bus segment connected to Port 1
(CH1)
Signal contact: signal
– repeater and another bus subscriber connected via
Port 1 (CH1) are both sending at the same time (e.g.
because an address has been assigned twice, the
setting of the slot time is too low, or during lifting of
the segmentation in the optical lin).
Signal contact: no signal
– RS 485 driver of the repeater is defective (e.g. after
lightning strike)
none – Bus subscriber is not connected
– Connected bus subscriber is not switched on
– One or both conductors in the RS 485 bus line is
broken
Signal contact: no signal
Operating mode ”Line with optical fiber link monitoring“ and ”Redundant optical ring“
optical ports yellow lights up PROFIBUS frames are being received at the optical port
Signal contact: no signal
flashes Transmission rate has been recognized – LED ”System“
lights green or flashes red/green.
– No transmitting bus subscriber present (optical fiber
connection is OK)
Signal contact: no signal
LED Color Meaning
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