Operating Manual V8.2/03.2017
Non Invasive Road Sensor
52
G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany
19.5.5 Message Device Identification
The device responds to the identification request with following message (example for SDI-
12 device address ‘0’):
0I!
013Lufft.NIRSxynnn
x: device type (P: with pyrometer, N: without pyrometer)
y: Metric / US units ( m = metric, u = US )
nnn: Software version
i.e. for a NIRS31-UMB with pyrometer, configured for US units:
0I!
013Lufft.deNIRSPu022
19.5.6 Message Verification
The command verification aV! is used to evaluate status information of the device. The
device responds with
a0004<CR<LF>
to the request, i.e. 4 values are available in the buffers.
The first “measurement value”, transmitted in buffer ‘0’ contains the status information of the
measurement channels.
The status data of the channels are assembled to form “fake measurement values”, where
each digit represents one status. See below for the coding of states.
Buffer ‘0’
Status buffer ‘0’: +nnnn
Pyrometer status: 0 = OK, other codes see below
Lamp status: 0 = OK, 1 = failure
Chopper speed status: 0 = OK, 1 = failure
Chopper failure status: 0 = OK, 1 = failure, 2 = not yet
started, 3 = starting
Filter failure status
0 = OK, otherwise failure
Buffer ‘1’
Remaining time to service
-10000h ... +10000h
Service-Level
-500.0% ... 100.0%
Example (SDI-
12 Address ‘0’, chopper wheel starting, 4000h to service):
0V!
00004<CR><LF>
0D0!
0+0013+0<CR><LF>
0D1!
0+50.0+4000<CR><LF>
