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Other errors
4-3-2
Troubleshooting PROFINET IO communication
Problem
PROFINET IO Controller Unit is
configured, but only one of the
IO Devices is not exchanging
data.
PROFINET IO Controller Unit is
configured, but none of the IO
Devices are exchanging data.
/i
Probable cause
The PROFINET IO configuration of the IO
Controller for the Unit is not correct.
The SmartSlice bus has one of the
following problems at start-up:
•
One or more SmartSlice IO Units are
missing.
•
Disconnected turn-back cable, END
Unit or END-M Unit.
The PROFINET IO Configuration for the
Unit cannot be compared with the actual
configuration. No PROFINET IO
Connection is established with the Unit.
No power is supplied to the system.
•
All LED indicators on the system are
OFF.
The PROFINET IO Controller Unit is in
OFFLINE mode.
•
The IO Controller's NS LED is OFF
and the MS LED is ON Red or blinking
Red.
•
A PROFINET IO interface error has
occurred: see IO Controller Status 2
error flags (IO Controller CIO Word
n+6, bit 00 to 03, see Note) for details.
Network cabling is not correct.
•
IO Controller NS LED is OFF and/or
Unit BF LED indicator is ON.
•
IO Controller Status 2 error flag may
provide more information (IO
Controller CIO Word n+6, bit 00 to 03,
see Note).
•
IO Controller CIO Words n+9 to n+16
show which IO Devices have
problems.
Correction
•
Verify the selected configuration matches
the physical SmartSlice I/O Unit
configuration connected to the
PROFINET IO Communication Unit.
Check the PROFINET IO Alarm.
•
Check the configuration and the
parameter data of the IO Device.
•
Some SmartSlice I/O Units (such as the
GRT1-AD2) support different I/O sizes.
Make sure this SmartSlice IO Unit is
configured according the PROFINET
IOconfiguration.
Connect the SmartSlice I/O Units and the
cables properly and turn the power ON
again.
•
Verify that power is supplied to the
system.
Determine the mode of the IO Controller
Unit: Check the IO Controller Status 1 Word
(CIO Word n+5, bit 00 to bit 03, see Note). If
Unit is in OFF-LINE mode:
•
Verify that the IO Controller does not use
the same Device Name or IP address as
another Unit on the network. Correct the
IO Controller Unit's Device Name or IP
address.
Verify that the network installation is correct:
•
Verify that all IO Devices and Ethernet
switches are powered up and functioning
correctly.
•
Verify that all IO Devices are correctly
connected to the network.
•
Check the cable lengths.
Section 4-3
77
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Troubleshooting
