DCT Antares SB, User Manual

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4.17. SERIAL PORT DEVICES
1. The external device talks TAIP so the main reason for connecting it
with the unit is to receive GPS-like information and display it locally.
An example is a laptop running an AVL application or a PDA running
a GPS navigation software.
2. The external device has no idea of TAIP so it talks any byte-based
protocol.
For the first option there are no special configurations on the Antares SB
TM
. It is only necessary to configure the Event Machine to send reports to the
serial port so the attached device has GPS/events information to analyze.
For the second option, the Antares SB
TM
is used just as a communication
media between the attached device an a Destination . When working in this
mode the Antares SB
TM
can pass any byte-like message to a Destination
and vice versa.
This requires the Antares SB
TM
working on MDT PAD mode. This is con-
trolled by the
MT
messages. When working in this mode the TAIP console
over the serial port is disabled. In order for the serial port to enable the
TAIP console again, the user-defined escape character has to be entered.
The default value for the escape character is
(
1B hex) or the ’ESC’ key on
a terminal.
If the serial port is not responding to TAIP commands it may be
that the serial port is in MDT PAD mode. In this case the escape
char has to be entered. The default escape char is
1B hex
or the
’ESC’ key on an a serial port terminal.
Note:
On MDT PAD mode Antares SB
TM
uses a PAD
16
criteria to send the re-
ceived message to a Destination .
The PAD criteria is controlled with the
MT
message and it is composed
by:
•
PAD character 1.
•
PAD character 2.
• PAD Timeout.
• PAD size.
Whenever any of the PAD criterion is met, the accumulated message on the
unit is transmitted.
The unit sends and receives the MDT messages using the
TX
TAIP mes-
sage. Using this TAIP message any binary-like data can be transfered by
means of escape characters. See the
TX
message on the TAIP reference for
more information.
16
Packet Assembly Disassembly.
99