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MAN20001572-01-07/22 (translation of the original operating instructions)
Operating Instructions Bus Module
MBM-PN-..-MLI-… (PROFINET)
EN
11.9. Line swap
During the first starting process, the current MLI topology will be saved if the control system configuration matches the
MLI topology.
When the system is restarted, the bus module detects if the position of an MLI device has changed or the device is being
operated on a different MLI line.
The bus module additionally reports an error if devices were removed or added.
This is intended to prevent devices that were incorrectly connected after maintenance work from entering safe mode, for
example.
If the system reports a line swap error, the MLI topology must be checked and corrected if necessary. Once the MLI topology
matches the stored topology again, the system enters normal operation again after the restart.
Replacement devices are not recognized as errors if there are no major changes in the safe data of the MLI devices. In this
case, the user is responsible for testing the safe function.
An intentional change of the MLI topology must be reset via factory reset using the DIP switches (see chapter
system to factory settings (factory reset) On page 37
). The MLI topology will be saved the next time the system is started.
11.10. Replacing submodules
CAUTION
Risk of damage to equipment or malfunction as a result of uncontrolled machine stop.
Ì
The communication within the system is interrupted by the replacement of a submodule, and the
safe bits are reset. If a process is running, this situation can result in an uncontrolled stop and
damage to the installation or the product. Before replacement, make sure the installation is in a
suitable operating status.
NOTICE
Pay attention to the information on the replacement of a submodule in the operating instructions for
the related module. On submodules with a safety function, the correct function must be tested after
replacement before the system enters normal operation again.
The replacement of submodules MSM while in operation is also possible (pay attention to safety note above). As soon as the
system detects a correct submodule, the submodule is ready for operation. The system reacts as follows on a replacement:
1.
If the submodule MSM is removed, the SLOT LED illuminates red, interrupted by 1x green flash. In addition, the SF LED
on the bus module MBM illuminates red.
2.
If the submodule MSM contains a safety function, the related bit on the bus is cleared as soon as the submodule has
been removed.
3.
If an identical submodule is inserted with the same alignment, the error display goes out and the bit is transmitted on
the bus again to suit the actual situation.
