File : CS-SUP-MUTI-WTHERMAPP-E01.sxw
7.5.6 Usage limit of the multi-frame mode
The Wavenis protocol doesn't allow the usage of the multi-frame mode in repeater mode
, i.e. When
the module is reach through relaying equipments.
It is up to the interrogator equipment to format the frames so that the response fit in a single frame.
Typically in repeater mode, the interrogator module have to read the logged temperature values by packets of
M measurements (M corresponding to the maximal number of measurements that can be read through 3
repeaters).
WaveTherm – DALLAS :
M = 59 measurements
WaveTherm – PT100 :
M = 29 measurements
WaveTherm – PT1000 :
M = 29 measurements
Example for a WaveTherm – DALLAS :
if the number of recordings is 2000, the interrogator equipement have to send the following frames :
frame 1 :
reading of 59 recordings, starting from the 2000
th
;
frame 2 :
reading of 59 recordings, starting from the 1941
th
;
frame 3 :
reading of 59 recordings, starting from the 1882
th
;
...
frame 33 :
reading of 59 recordings, starting from the 112
th
frame 34 :
reading of 59 recordings, starting from the 53
th
.
Attention when reading in repeater mode, it is advised to stop the datalogging to ensure that no
new recording will shift the storage table.
WaveTherm modules – application handbook
page 55 of 65
