Troubleshooting - SMC Networks SI Unit Operation Manual

9. Troubleshooting

9.1. Troubleshooting
No. Problem
1 L/A indicator is OFF
L/A indicator is Green ON
2
BF indicator is Red ON
3
BF indicator is Red flashing
4
No. Problem
SF indicator is Red ON
1
Table 9-1 Troubleshooting for network communication
Possible cause
No physical connection to Ethernet
network
Auto-negotiation not successful
Connection via Ethernet is OK, but no
connection to the PROFINET
Controller (no PROFINET Controller
available on the Ethernet)
No physical connection on both
PROFINET communication connector
Auto-negotiation not successful
The SI Unit is connected to the
Ethernet network, but the following
problem has occurred
●The SI Unit is not connected to the
PROFINET Controller
●Configuration is defective
●Device name is not correct
●The GSD file is not correct
●The PROFINET Controller is
defective
Table 9-2 Troubleshooting for diagnostic events
Possible cause
Power supply is outside the specified
voltage range
The SI Unit entered high voltage safe
status
At least one valve coil has a short
circuit
Self-test has failed
The PROFINET Controller is defective
- 32 -
Remedy
●Check the cable connection
●Check network settings
●Check network settings
●Check PROFINET controller is active
●Check the cable connection
●Check network settings
●Check the L/A indicators
---
●Check the cable connection
●Check network settings
●Check PROFINET controller is active
Check the configuration
Check the Device names
Check the GSD file
Check the PROFINET Controller
Remedy
●Check the PWR and PWR(V)
indicators
●Check the power supply and supply
voltage level
●Check the power supply voltage level
and remedy.
Check the solenoid valves for any
short circuit
●Reset the power supply
●Check the diagnostic message
●Check the PLC mode
No.EX※※-OMU1006-B