Technology Modules
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448
Diagnostics
Designation Value Comment
SW
ERR
SWIRE MASTER
If the physical structure of the SWIRE bus does not match the configuration stored in the
BL20-E-1SWIRE, this bit indicates an error.
0 Data exchange
The physical structure of the SWIRE bus was accepted and the SWIRE bus
is in operation.
1 Offline
The physical structure was not accepted, the SWIRE bus does not start
operation (SW LED flashing).
RDY
ERR
PLC SLAVE
This bit indicates an error if the configuration stored in the BL20-E-1SWIRE does not match
the SET configuration stored in the PLC.
0 OK
No error present. The SWIRE bus is ready for data exchange.
1 Offline
The configuration stored in the BL20-E-1SWIRE was not accepted. The data
exchange is prevented (RDY LED flashing).
COM
ERR
Communication SWIRE
A communication error is present, as long as a slave can no longer be reached, its internal
timeout has elapsed or communication is faulty. The master cannot carry out data
exchange with at least one slave.
0 No error present.
1 An error is present.
U
SWERR
Voltage U
SW
Voltage fault in U
SW
, voltage (17 VDC) for supplying the SWIRE slaves
0 No error present.
1 Voltage errors
GENERAL
ERR
Error message
The creation of a function block shows that systems/function blocks for the general check-
ing of a slave for any diagnostics messages present only check the first byte.
0 No diagnostics message present
1 One/several diagnostics messages present
SD
ERR
Communication SWIRE slaves
If the parameter SD
ERR
A is set for group diagnostics, this bit indicates an error as soon as
only one slave on the bus sets its SD
ERR
.
0 No error is present or diagnostics function has been deactivated via the
parameter setting.
1 An error is present.
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