Uart Timing - Intrepid Control Systems neoVI Hardware Help

Intrepid Hardware Help
UA RT Timing - neoVI
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The UART network supports software program m able tim ing param eters. These include the baud rate and tim e delim iters as described in the ISO 9141/Keyword 2000 specs.
First, you can setup a baud rate. Intrepid Hardware Ex plorer provides you with m any com m on UART speeds present in Vehicle Network s to choose from .
In norm al UART operations tim ing delim iters specify how m essaging tak es place. These settings are shown in Figure 2 below. The settings are ex plained in table 1 below.
Timing Parameter
Rx Inner Fram e Spacing
Tx Inner Fram e Spacing
Tx Inter byte Spacing
The Message Termination section allows you to choose how frames are spaced. Select Inner Frame Time for ISO9141 or Keyword 2000 networks. For GME CIM-SCL networks select GME CIM-SCL.
neoVI Documentation - (C) Copyright 2000-2019 Intrepid Control Systems, Inc.
Last Update: Monday, May 24, 2010
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Figure 1 - You can setup a baud rate for UA RT communications.
Figure 2 - The timing specifications used in ISO communications for message delineation.
Table 1 - Descriptions of timing parameters in ISO/UA RT
Parameter Name
Receive Inter-fram e Separation
Transm it Inter-fram e Separation
Transm it Inter-byte Separation
Figure 3 - If working with a GME CIM-SCL network select GME CIM-SCL.
Description
neoVI determ ines when a m essage ends using this param eter. If no data byte has been
received within this period the end of m essage is signaled.
This is the delay the transm itter will wait between two m essage transm issions.
This is the delay that neoVI uses between each transm it byte.

UART Timing

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