Gotting HG 71912-A User manual

Device Description HG 71912-A
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Positioning And Ident
Interpreter For Offset Antennas
— One-dimensional / Indoor —
HG 71912-A
English, Revision 02 Dev. by: W.M.
Date: 12.07.2011 Author(s): RAD / L.S. / W.M.
Götting KG, Celler Str. 5, D-31275 Lehrte - Röddensen (Germany), Tel.: [phone] / 80 96 -0,
Fax: [phone] / 80 96 -80, eMail: [email protected], Internet: www.goetting.de

Content HG 71912-A
English, Revision 02, Date: 12.07.2011 2
Content
1 Introduction.......................................................................4
1.1 System Components............................................................... 4
1.2 Function ................................................................................. 4
1.2.1 Surveillance Of The Output Stage ..................................................5
1.2.2 Switchable reference transponder in the antenna ...........................5
1.2.3 Software Update (RS232) .............................................................. 5
2 Mounting...........................................................................6
2.1 Transponder ........................................................................... 6
2.2 Interpreter .............................................................................. 7
2.2.1 HG 71912ZA ................................................................................. 7
2.2.2 HG 71912YA ................................................................................ 8
2.2.3 HG 71912XA ................................................................................. 9
3 Commissioning................................................................10
4 Components and Operation .............................................14
4.1 Underground components ..................................................... 14
4.2 Antenna................................................................................ 15
4.3 Interpreter HG 71912-A......................................................... 15
4.3.1 Pin Allocations / LED ................................................................... 16
4.3.1.1 8 pin jack Interpreter <—> Processor........................................ 16
4.3.1.2 Allocation of the 26 pin round ribbon cable / of the SUB-D connec-
tor of the variant HG71912Y.....................................................16
4.3.1.3 Control LED............................................................................ 17
4.3.2 Interfaces .................................................................................... 18
4.3.2.1 RS 232 ................................................................................... 18
4.3.2.1.1 List of System Data that may be Output .................... 18
4.3.2.1.2 List Of System Commands ....................................... 20
4.3.2.1.3 System Monitor ........................................................ 21
4.3.2.2 Positioning Pulse (all Variants)................................................ 21
4.3.2.3 CAN OPEN (Version HG 71912ZA/XA) .................................... 22
4.3.2.4 Parallel Port (Version HG 71912YA) ........................................ 32
5 Software .........................................................................33
5.1 Terminal Program ................................................................. 33
5.1.1 How to find/add HyperTerminal .................................................... 33
5.1.2 Parameter Presetting................................................................... 34
5.2 System Monitor..................................................................... 35
5.2.1 How to start the monitor program ................................................. 35
5.2.1.1 Procedure Monitor Only .......................................................... 35
5.2.1.2 Procedure 3964/transparent .................................................... 35
5.2.2 How to work with the monitor program ......................................... 36

Content HG 71912-A
English, Revision 02, Date: 12.07.2011 3
5.2.2.1 Main Menu.............................................................................. 37
5.2.2.2 (W)rite Transponder................................................................ 39
5.2.2.3 (S)erial Interface ..................................................................... 39
5.2.2.4 P(a)rallel Interface .................................................................. 41
5.2.2.5 (C)AN-...................................................................Parameters42
5.2.2.6 CAN Terminator...................................................................... 43
5.2.2.7 P(o)sitioning Pulse.................................................................. 44
5.2.2.8 D(e)coding.............................................................................. 45
5.2.2.9 CS(V) Output .......................................................................... 45
5.2.2.10 (P)assword ............................................................................. 46
5.2.2.11 Se(t)up Ref.transponder Values .............................................. 46
5.2.2.12 (U)pdate Firmware .................................................................. 46
5.3 Software Update ................................................................... 47
5.4 Software Update (Antenna Software) .................................... 47
5.4.1 Configurationg The Update Program ............................................ 47
5.4.2 Proceeding A Software Update .................................................... 47
6 Trouble Shooting.............................................................50
7 Technical Data ................................................................51
8 Appendix.........................................................................53
A Physical Basics ................................................................................ 53
A.1 Field Arrangement of the Energy Field.....................................................53
A.2 Field Arrangement of the Transponder’s Reverse Signal ........................53
A.3 Induced Voltages in Sum and Difference Antenna...................................54
B Procedure 3964R ............................................................................. 54
B.1 Data direction antenna -> PLC.................................................................54
B.2 Data direction PLC -> Antenna ................................................................55
C Procedure "transparent"................................................................... 56
C.1 Data direction antenna -> PLC.................................................................56
C.2 Data direction PLC -> antenna.................................................................56
D Parallel Output ................................................................................. 56
E Positioning Pulse.............................................................................. 56
F Timing-Diagramm of the parallel interface ....................................... 57
9 List Of Pictures ...............................................................58
10 List Of Tables..................................................................59
11 Handbook Conventions....................................................61
12 Copyright and Terms of Liability ......................................62
12.1 Copyright.............................................................................. 62
12.2 Exclusion of Liability ............................................................. 62
12.3 Trade Marks and Company Names........................................ 62

Introduction HG 71912-A
English, Revision 02, Date: 12.07.2011 4
1 Introduction
The herein described system is especially suited for indoor areas. The electronic units
are not sealed within the antenna cases, but varnished. Therefore it is possible to ef-
fect all important settings and adjustable values after manufacturing. This leads to fair
priced systems. Software updates can be effected using a serial interface.
The interpreter G_71912-A supplies the transponder code as a serial signal or parallel
signal as well as a midpoint crossover pulse when crossing over a transponder, which
is reproducible very exactly.
The transponders used in this system are trovan™ transponder ID200 (read only) and
ID250 (read / write). These transponders are fair priced and especially suited for the
applications of this system (track guided or rail-mounted vehicles with fairly small
reading distances). This manual refers to equipment with software version 1.08.
1.1 System Components
The following components which all match the evaluation unit (see no. 3) are offered:
Figure 1 System components
1. Transmitting/receiving antenna HG 98787ZA (different antennas can be used in
this system)
2. Transponder HW DEV 00033 or Götting HG 71325ZA (on the track)
3. Interpreter HG 71912-A with positioning impulse output and two types of inter-
faces: serial / CAN (HG 71912ZA) or parallel (HG 71912YA)
4. Optional programming device for trovanTM transponder HG 818309A (not
shown in picture)
1.2 Function
As the antenna passes over the transponder, it energizes the latter with an energy field
of 128 kHz. The transponder returns its code at half of this frequency.
The transponder position in relation to the antenna surface is measured by a coil with
orientation in direction of travel. The interpreter decodes the transponder code. Each
crossing of the coordinate axis in driving direction generates a positioning pulse with
an adjustable duration.
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Introduction HG 71912-A
English, Revision 02, Date: 12.07.2011 5
The serial output signal is a non-voltaic RS 232. Alternatively it is possible to use a
CAN bus. The positioning pulse is not galvanically separated but available as a +24 V
(20 mA) operational voltage switched output. Optional a 15 bit parallel output for the
code (24 Volt switched, non current limiting) can be effected.
Transponders may also be programmed. Therefore the transponder has to be located
within the antenna field at least 30 ms after starting the programming cycle.
1.2.1 Surveillance Of The Output Stage
The output stage is surveilled concerning the following errors:
-capacity of oscillatory circuit, short circuit, idling, detuning
-oscillator breakdown 128 kHz, frequency deviation
-short-circuit transmitting conductor, idling
-power transistor is defect
By this surveillance a certain probability of the function can be detected. Defective
contacts or ripped-off cables between interpreter and antenna are checked constant-
ly. A non-authorized change in parameters leads to the setting of a bit in the system
status (see also table 7 on page 19).
ATTENTION! Also the crossing of a massive steel plate may possibly trigger
the surveillance!
After programming the transponder an error bit is set, as the surveillance circuit reacts
to the altitude modulation (AM) of the output stage, which is created for programming
the transponder. The error bit is deleted by a successful reference transponder test.
1.2.2 Switchable reference transponder in the antenna
It is recommended that in front of each starting and each change of driving direction
a reference transponder test is proceeded via a serial command. That way, the com-
plete function of the antenna and of the interpreter is checked cyclically. If the test has
been successful, a positioning pulse is put out.
1.2.3 Software Update (RS232)
Until up to 10 seconds after turning on the device, an update can be started by using
a special PC program without opening the system monitor. Additionally, there is a sub-
menu for the software update in the system monitor (see also chapter 5.3 on page 47).
In order to not disturb the PC update program by the permanent telegram output, the
output starts only 10 seconds after turning on the device.