Omron GRT1 - 27-11-2006, Operation Manual

Page: 72 / 111

53
Operating the Network
Section 3-4
PROFIBUS
Communication Status The colour of the LED indicators in the window indicate either error (Red) or a
status (Green). The PROFIBUS Communication status LED indicators repre-
sent the status bits in the GRT1-PRT Diagnostics message sent to the
PROFIBUS Master Unit. Refer to
Appendix B Slave Diagnostics Message
for
information on individual bit flags. In the example above, the GRT1-PRT has
rejected the I/O Configuration because of a mismatch between the configura-
tion provided by the PROFIBUS Master Unit and the physical SmartSlice I/O
Unit configuration.
The GRT1-PRT is also requesting new parameter data from the Master Unit.
SmartSlice I/O
Communication status The lower half of the window shown above contains status LED indicators,
which indicate the communication status of individual SmartSlice I/O Units.
The LED indicators can have four colours.
The example above shows that the SmartSlice I/O Unit is slot 9 is different
from the one that was configured. Consequently, the GRT1-PRT rejects the
I/O Configuration, since it does not match the physical configuration.
Example The window below shows another example, in which two slices which were
configured are not present. The GRT1-PRT still accepts the I/O Configuration
and performs data exchange over PROFIBUS.
Colour Description
Grey Grey LED indicators do not take part in communication and have also
not been configured.
Green Green LED indicators indicate correct I/O communication. There are no
problems with the associated SmartSlice I/O Unit.
Orange Orange LED indicators indicate that there is a SmartSlice I/O Unit
present, but it is not the type, which was configured through the PROFI-
BUS DTM.
Red Red LED indicators indicate a configured slot in which however no
SmartSlice Unit is present.