Siemens SIMATIC NET PROFIBUS User Manual
Infrared Link Modul (ILM)
6ZB530–3AC30–0BA1
42
Copyright
by Siemens
LED Display
Possible Causes
Signaling
Contact
Contact
POWER LED
lit green
TX LED
lit orange,
RX LED
lit yellow
-
No acknowledgment pulse received since partner
station not configured with acknowledgment pulse
station not configured with acknowledgment pulse
-
On point-to-multipoint links on the PROFIBUS
ILM of the master subnet if acknowledgment bit
configured (see Section 6.4)
ILM of the master subnet if acknowledgment bit
configured (see Section 6.4)
Signals when
configured
(acknowledg-
ment pulse)
configured
(acknowledg-
ment pulse)
POWER LED
lit green
TX LED
lit orange,
RX LED
lit yellow,
LOW LED
lit red
-
No acknowledgment pulse received since partner
station is not configured with acknowledgment
pulse or receive level for acknowledgment pulse
and response frame too low.
station is not configured with acknowledgment
pulse or receive level for acknowledgment pulse
and response frame too low.
-
On a point-to-multipoint link on the PROFIBUS
ILM on a slave subnet if configured with acknow-
ledgment bit (see Section 6.4)
ILM on a slave subnet if configured with acknow-
ledgment bit (see Section 6.4)
Signals if
configured
(acknowledg-
ment pulse,
level monito-
ring)
ment pulse,
level monito-
ring)
POWER LED
lit green
TX LED
lit yellow
RX LED
not lit
-
Partner station not responding because not atta-
ched, infrared link interrupted, incorrectly configu-
red (PROFIBUS address of the slave incorrect,
data rate of the partner PROFIBUS ILM set incor-
rectly etc.)
ched, infrared link interrupted, incorrectly configu-
red (PROFIBUS address of the slave incorrect,
data rate of the partner PROFIBUS ILM set incor-
rectly etc.)
Signals when
configured
configured
(bus activity)
POWER LED
lit green
TX LED
lit yellow,
RX LED
lit yellow,
LOW LED
lit red
-
Risk of problems on bus, since infrared link has
too much attenuation (obstacles in area of trans-
mission link, distance between PROFIBUS ILMs
too great, PROFIBUS ILM turned out of line with
partner station)
too much attenuation (obstacles in area of trans-
mission link, distance between PROFIBUS ILMs
too great, PROFIBUS ILM turned out of line with
partner station)
Signals when
configured
configured
(level monito-
ring)
ring)
POWER LED
lit green
TX and RX LEDs not lit
ERROR LED
lit red
-
Risk of problems on bus due to incidence of ex-
traneous light (for example sunlight, lamps with
infrared component, halogen lamps with high
energy)
traneous light (for example sunlight, lamps with
infrared component, halogen lamps with high
energy)
Signals when
configured
configured
(constant
light)
light)
POWER LED
lit green
RX LED
lit yellow
ERROR LED
lit red
-
Bus problems must be expected due to incidence
of extraneous light with high-frequency modula-
tion (for example energy-saving lamps with HF
switching device)
of extraneous light with high-frequency modula-
tion (for example energy-saving lamps with HF
switching device)
Signals when
configured
configured
(constant
light)
light)
Table 1:
Possible problems operating the PROFIBUS ILM