Components and Operation
Englisch, Revision 14, Date: 07.02.2017
23
Further information regarding command no. ...
1.
The monitor mode should not be used during normal operation (e. g. from an
PLC), as the following output is not according to a transparent or 3964R protocol
but only suitable for display on a VT52-terminal and used for the alteration of
parameters.
2.
An activated reference transponder is described by setting the corresponding
bit in the system status “0x0100“.
Please note that while the reference transponder is activated, the runway tran-
sponders cannot be processed unambiguously, i.e. they are either oppressed or
their position is inaccurate.
3.
The successful deactivation of the reference transponder is described by delet-
ing the “0x0100“ bit from the system status.
4.2.6.2
System Monitor
In monitor mode, the system is configurable via a menu. Please refer to section 5.2
4.2.6.3
Positioning Pulse
The digital positioning output indicates the crossing of the center line of the antenna
in direction of travel (x direction). Its duration is adjustable within a millisecond pattern.
4.2.6.4
CAN Bus
4.2.6.4.1
Description
Either Basic- or Full-CAN mode are configurable. The system monitor is used for set-
ting the CAN parameters (also refer to section 5.2.2.4 on page 36). The internal CAN
module is based on the CAN specifications V2.0 part B. It is possible to transmit either
standard or extended frames (adjustable). The system monitor is used for setting the
bit timing as well as the identifier.
It is possible to output 3 different CAN Message Objects and receive 1. Depending on
the configuration, it is possible to distinguish between permanently output telegrams
according to the set update rate or telegrams output only while a transponder is within
the field. In addition, remote operation is selectable.
The objects are activated in the CAN menu by input of an address different from 0 (also
refer to section 5.2.2.4 on page 36).
4.2.6.4.2
CAN Message Object 1 (Transmission Object)
Byte #
Length
Type
Description
1,2
2 Byte
Unsigned int
System status according to Table 9 on
page 21
3,4,5,6
4 Byte
Unsigned long
32 Bit transponder code
7,8
2 Byte
Unsigned int
Number of code readings of the last
transponder crossings
Table 11
Structure of the CAN Message Object 1