DRUCK
TEMPERATUR
&
Leitenberger GmbH •
Bahnhofstr. 33 • D-72138 Kirchentellinsfurt • GERMANY
Tel. +49 (0) 7121-90920-0 • Fax +49 (0) 7121-90920-99 •
-Info@Leitenberger.de •
• www.druck-temperatur.de
DT
www.
-Cal.net
LR
MANUAL
LHM - Handmessgerät für Druck, Kra/Gewicht und Drehmoment
LHM - handheld for pressure, force/weight and torque
56
8. Automac idenficaon of the acve sensor
The
automacally recognizes the external sensor on the basis of a code encoded on
LHM
LR-
Cal
the sensor connector.
LR-
Cal
LHM
without internal sensor, the external sensor connected is automacally
acknowledged by the code assigned on the connector, e.g.
.
EXT.1
At
with internal sensor (pressure or force) the base for determining which is the
LHM
LR-
Cal
acve sensor is that if there is no extenal sensor connected it is adopted the internal one as
acve sensor (
)
INT.
9. USB communicaon protocol
Protocol: 8 data bits / 1 stop bit / no parity
Baud rate can be set in Menu -
among
-
-
-
USB Communicaon Parameter
9600 19200 38400
115200
.
9.1 Reading actual values
In Connuous mode the reading actual values message is transmi ed every 50 ms.
In Manual mode the meassage is transmi ed by pressing the F2:SEND bu on.
In On Demand mode it is necessary to send the command p000cr to read the actual values (cr =
carriage return).
The message is composed by 21 characters:
$p0XXXXXXX UUUUUU ZRPB cr
$p0
= 3 header characters ‚$p0'
= 7 ASCII characters with the actual value (sign and decimal point)
XXXXXXX
= 6 ASCII characters with the measurement unit
UUUUUU
= 1 character, if equal to , ZERO funcon is acve
Z
Z
= 1 character, if equal to , data logging is acve
R
R
= 1 character, if equal to , PEAK funcon is acve
P
P
= 1 character, if equal to
, ba ery needs charging
B
B
= 1 character Carriage Return (string terminator)
cr
9.2 Possible commands to be sent to the
LHM
LR-
Cal
p1XXcr
= Measurement unit
pressure:
= bar;
= mbar;
= psi;
= Mpa;
= kPa;
= Pa;
XX
00
01
02
03
04
05
= mH2O;
= inH2O;
= kg/cm²;
= mmHg;
= cmHg;
06
07
08
09
10
= inHg;
= atm;
= mHg;
= mmH2O.
11
12
13
14
force:
= kg;
= t;
= g;
= N;
= daN;
= kN;
= MN;
XX
00
01
02
03
04
05
06
= Lb;
= Klb.
07
08
torque:
= Nm;
= Nmm;
= Kgm;
= kNm;
= ln-lbf;
XX
00
01
02
03
04
= -lbf;
= gcm;
= kgmm
05
06
07
