Figure 13: Encrypted and decrypted message of the WB169-SI2 module
Figure 14: Structure of WB169-SI2 module message with both inputs in alarm mode
3.3.2
Alarm message
Alarm message
of the module is transmitted immediately after some of the supported alarm types arises. Current
modification of WB169-SI2 module supports sending of following types of alarm messages:
- OID 60 - value”0” - event of ”RESET” type
- OID 60 - value ”4” - input in ”OK” status - normal status (*)
- OID 60 - value ”5” - input in ”Error” status - alarm status (*)
- OID 60 - value ”15” - input in ”LEAK” status - alarm status
- OID 60 - value ”16” - input in ”NO LEAK” status - normal status (**)
- OID 60 - value ”17” - input in ”BURST” status - alarm status
- OID 60 - value ”18” - input in ”NO BURST” status - normal status (**)
(*) These types of events indicate alarm statuses on the pulse interface. Default values ”4” and ”5” generally
indicate whether the port status is alarm or normal. With using of ”alarm” couple of commands it is possible to
make the event interpretation more specific according to the sensor real function (see setting of ”alcok” and ”alcerr”
in paragraph
”
Setting of sensor inputs”.
(**) Positive events of ”NO LEAK”/”NO BURST” type are generated in that case, when after one or several
”alarm” periods a period without alarm status came around.
Each alarm message has Wireless M-BUS header (
”
WMBUS Header”) and short 4-Byte M-Bus header. The only
difference between regular information message header and alarm message header is in setting of
”CI” field
(Application Type), where the field in alarm message is always set to
”74”
value (
”
Alarm from meter with short
transport layer”).
Each alarm message has at least two data segments, that contain
alarm category and type
according to the
wacoSystem
categorization. All alarm messages from WB169-SI2module are in ”0” category (Generic) and can be
of different type as described in the list of supported alarm messages above. Complete code-list of supported types
of alarms is available on the public WEB address
These two segments are always the first and can be followed by one or more other segments carrying additional
information relevant to the alarm (typically current status in time of its arising).
Alarm message about a
change of sensor input status
is transmitted only in that case, when a two-state sensor
is connected to the module input, equalizing filter is set to ”1” status (slow mode) by ”dmode” command, and the
WB169-SI2
30
