Gotting HG G-98780-A, Device Description

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Device Description HG G-98780-A | English, Revision 16 | Date: 15.07.2021
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Chapter 2 – Introduction
Furthermore several antenna parameters, e. g. current consumption and supply volt -
age, are measured and, if desired, added to the serial output protocol.
The serial signal is made available via potentially separated RS 422 or RS 232 inter
-
faces. In addition, the positioning pulse is dc-insulated. Furthermore, CAN Bus or
Profibus interfaces are provided optionally. The following variants are available, they
can be distinguished by the second to last character of the product number, e.g.
HG G-98780
Z A.
As an option, the serial signal can be converted into a 16 bit parallel output signal
(24 Volts switched) for the code within an external interface device. This interface
device is suited for mounting rail (top-hat rail) installation and should be installed in
a place protected from any environmental influences (see section 5.3 on page 26).
2.3 Positioning Pulse
For the generation of the positioning pulse, it is necessary that the following precon -
ditions are met:

The reception voltage S (refer to Table 20 on page 30) must exceed the set
threshold for
Level for Positioning (refer to section 6.2.2.2 on page 31).
 A transponder code must be decoded without error.

The measured voltage X must fall below a certain threshold (refer to Table 20
on page 30).
If the above listed preconditions are met, a positioning pulse with changeable dura -
tion is generated. For the generation of a new positioning pulse it is essential that the
reception voltage S has fallen below the threshold set for
Threshold for Deco -
ding (refer to section 6.2.2.2 on page 31) first.
Thus only one pulse per transponder crossing is possible. Therefore, if a vehicle/
crane stops above the transponder after the positioning pulse was generated and
then changes its direction of travel, no renewed positioning pulse is generated
during the center crossing!
Table 2
Overview of HG G-98780-A variants
HG G-98780-A
Variant Profibus CAN Bus RS 422 RS 232
ZA X X
YA X X
XA X X
WA X X
UA X X
Similar to variant XA but with 4 m cable tails:
– 1 x Power/Serial
– Additionally the following connector options can be ordered
- 1 x Profibus & 1 x Profibus Terminating Resistor
If the antenna is to be the last device on the Profibus
- 2 x Profibus
If further devices follow on the Profibus