Siemens SIMATIC NET PROFIBUS Owner's Manual page 383

6ZB5530–3AC30–0BA1
10 Help With Problems During Operation
10.1 Status Displays for Incorrect Operation
LED Display
POWER LED not lit
POWER LED lit green
TX LED not lit
RX LED not lit
POWER LED lit green
TX LED not lit
RX LED lit yellow
POWER LED lit green
TX LED lit orange,
RX LED not lit
Possible Causes
- Power supply failed or turned off
- Module defective
- Ribbon band cable not plugged in when assem-
bling the module
- Interruption on one or more cores of the RS 485
LAN cable
- Reversed connection of core A and B of the RS
485 LAN cable
- Connected PROFIBUS master defective (not sen-
ding)
- PROFIBUS node is not attached or attached
PROFIBUS node is not turned on
- No partner station detected with attached PROFI-
BUS master
- Interruption on one or more cores of the RS 485
LAN cable
- Reversed connection of core A and B of the RS
485 LAN cable
- Attached PROFIBUS slave defective (not sen-
ding)
- PROFIBUS slave is not attached or attached
PROFIBUS slave is not turned on
- PROFIBUS slave node not correctly addressed
and therefore not responding
- No acknowledgment pulse received, partner sta-
tion not responding
41
Infrared Link Modul (ILM)
Signaling
Contact
Always si-
gnals
Signals when
configured
(acknowledg-
ment pulse)
Copyright by Siemens