459
2020/09
System behavior with the configuration checks (”Moeller conformance”
Parameter setting:
Parameter „MC“ = 1
System behavior with configuration checks
1
The physical structure of the SWIRE bus is scanned when U
SW
is switched on (power up) and com-
pared with the configuration stored in the BL20-E-1SWIRE.
The SWIRE bus starts operation (SW LED lit) if the physical structure of the SWIRE bus matches the
SWIRE configuration stored in the BL20-E-1SWIRE.
The operation is aborted if the physical structure of the SWIRE bus does not match the configu-
ration stored in the BL20-E-1SWIRE (SW LED flashing). The SWIRE bus only starts operation: The
SWIRE bus only starts operation:
– After the physical structure was stored in the BL20-E-1SWIRE and a match was determined:
- Manually, by pressing CFG button (only functions if the SW LED is flashing).
After the configuration is stored, the physical structure is compared once more with the
configuration stored in the BL20-E-1SWIRE.
– If the physical structure of the SWIRE bus matches the configuration stored in the BL20-E-
1SWIRE the next time that U
SW
is switched on.
2 If the PLC configuration check is activated, the configuration stored in the BL20-E-1SWIRE is com-
pared with the SET configuration stored in the PLC. The complete device ID must match.
If the two configurations match completely, the entire SWIRE bus is ready for data exchange (RDY
LED lit).
If the two configurations do not match completely (RDY LED flashing), the operation is aborted
for the entire SWIRE bus (RDY LED flashing).
3 The system then starts data exchange.
4 The physical structure of the SWIRE bus is monitored continuously during operation so that any
changes on the bus or slave failures can be detected. The system retains data exchange with the
functional slaves if a modification or slave failure is detected.
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