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Troubleshooting
2
0
2
0
-0
6
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Display of diagnosis in the TIA Portal
1.
Select the faulty I/O module in the hardware manager and navigate to its device view.
2.
Select the affected channel/the submodule.
3.
Open the online diagnostics by right-clicking with the mouse and select the menu item "Online
& diagnostics > Channel diagnostics."
Figure 7.2
7.3
Alarm Signals and Error Messages via Ethernet IP
Errors in the System/Sensor Power Supply
The voltage value of the power supply for the system and the sensors is monitored globally.
An error message is generated if the voltage drops below approx. 18.6 V or rises above 30 V.
The green U
S
LED is switched off.
The error message has no effect on the outputs.
The following table shows the diagnostic bits used in the status data of the IO-Link master.
This includes:
•
MI-FMA
: Module information
—
force mode active
•
MI-VAL
: Module information
—
IO-Link validation error
•
MI-SCB
: Module information
—
actuator short circuit, channel B
•
MI-SCA
: Module information
—
actuator short circuit, channel A
Caution!
Power supply
It must be ensured that the supply voltage, measured at the most remote node, does not fall
below 18 V
DC
.
Input
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte 4
0
MI-FMA
MI-VAL
MI-SCB
MI-SCA
MI-SCS
MI-LVA
MI-LVS