User's Manual

File : CS-SUP-MUTI-WTHERMSPETEC-E02.sxw
5.4 AUTOMATIC TRANSMISSION OF FAULTS
The WaveTherm module offers the possibility to automatically transmit radio frames when an occurrence is
detected.
The following occurrences may provoke an automatic alarm:
 Threshold detection (see 5.6 )
 End of battery life detection (see 5.8 )
 Probe fault (WaveTherm – PT100 only) (see 5.7 )
It is possible to select for each type of occurrence whether or not an alarm frame is to be sent.
The radio address of the receiver module and the repeater path must be preset with a radio signal.
5.4.1 ALARM MANAGEMENT PARAMETER SETTING
The alarm frame transmission parameters are set in two steps,
 Configuration of the alarm frames receiver module (as well as the repeater path if applicable).
This setting is carried out by accessing the parameters concerned, but may also be carried out
automatically.
Therefore, when a remote module of the type WaveCard/WavePort transmits an alarm configuration
command; the WaveTherm module retrieves the address of the remote module and repeater path (if
used) and memorises them as receiver of alarm frames.
 Enable alarms with the alarm management parameter
Alarm frame management configuration is achieved with specific radio commands. Following an
alarm configuration command, the WaveTherm module returns an acknowledgement of reception.
In the case of an error, or a non-conform request, the acknowledgement frame contains a write
status byte. Otherwise it returns control, index and input bytes.
5.4.2 TRIGGERING AN ALARM FRAME
After detection of a fault, if the configuration mode authorises transmission of alarms, the module transmits
an alarm frame.
Attention, an alarm frame only has one type of detection. When several alarms are detected, the
WaveTherm module emits the frames one after the other.
An alarm frame will be transmitted after the previous frame has been acknowledged.
The remote device must send an acknowledgement frame to confirm reception of the alarm frame and end
dialogue.
If the WaveTherm module does not receive this acknowledgment, it re-transmits the alarm frame a set
number of times.
Between each re-transmission of a non-acknowledged alarm signal, the module waits for a predefined time.
WaveTherm module technical specifications page 24 of 31