THIES 4.3811.00.000, Руководство по эксплуатации

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4.3811.00.000_US-Anemometer-DSP_eng.doc 15 - 26 021511/10/06
The Ultrasonic incorporates two different practical procedures for averaging:
•
one procedure for generating vectorial mean values
and
•
one procedure for generating scalar mean values
"Vectorial averaging" is set in this device version.
7.3 Serial data output
The transmission of data via the RS485 interface is known as serial data output. Two modes are
available for data transmission:
•
independent transmission of data
•
transmission of data via interrogation telegram
This device version only transmits data on request.
7.3.1 Data enquiry
The command TR is used for data enquiry via the ULTRASONIC. The command has no access
protection. After processing the command the device sends back the appropriate response
telegram. The time between the last character in the request telegram and the first character in the
data telegram is < 0.5ms.
The response to a data enquiry is delayed by 5ms in this device version.
7.3.2 Fixed telegram formats
For telegram output several predefined telegrams are available for independent output and data
request.
The detailed structure is described in 10 Predefined Data Telegram. A reference list of telegram
formats can be found in Table 3: List of predefined data telegrams.
Telegram name Telegram number Telegram structure
VD
00001
(STX)gg.g ddd*cc(CR)(ETX)
VDT
00002
(STX)gg.g ddd ttt.t ss*cc(CR)(ETX)
V4DT 00003 (STX)ggg.g ddd ttt.t v ss*cc(CR)(ETX)
NMEA V 2.0 00004 $WIMWV,ddd.d,R,ggg.g,v,A*xx(CR)(LF)
Standard
deviation
00005
(STX)iigg.g hhh.h ddd eee ttt.t uuu.u ss*cc(CR)(ETX)
User-specific 00006 The user-specific telegram is output
Vx, Vy 00007 (STX)aaa.a;bbb.b;ttt.t;ss;cc(CR)(ETX)
VDT Version 1
( GAMESA)
00009 !iigggdddttttwf(CR)
Table 3: List of predefined data telegrams