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UA RT Timing - neoVI
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T he UAR T ne two rk suppo rts so ftwa re pro gra m m a ble tim ing pa ra m e te rs. T he se include the ba ud ra te a nd tim e de lim ite rs a s de scribe d in the ISO 9141/Ke ywo rd 2000 spe cs.
First, yo u ca n se tup a ba ud ra te . Intre pid Ha rdwa re Ex plo re r pro vide s yo u with m a ny co m m o n UAR T spe e ds pre se nt in Ve hicle Ne two rk s to cho o se fro m .
In no rm a l UAR T o pe ra tio ns tim ing de lim ite rs spe cify ho w m e ssa ging ta k e s pla ce . T he se se ttings a re sho wn in Figure 2 be lo w. T he se ttings a re e x pla ine d in ta ble 1 be lo w.
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
Timing Parameter Parameter Name Description
R x Inne r Fra m e Spa cing R e ce ive Inte r-fra m e Se pa ra tio n
ne o VI de te rm ine s whe n a m e ssa ge e nds using this pa ra m e te r. If no da ta byte ha s be e n
re ce ive d within this pe rio d the e nd o f m e ssa ge is signa le d.
T x Inne r Fra m e Spa cing Tra nsm it Inte r-fra m e Se pa ra tio n T his is the de la y the tra nsm itte r will wa it be twe e n two m e ssa ge tra nsm issio ns.
T x Inte r byte Spa cing Tra nsm it Inte r-byte Se pa ra tio n T his is the de la y tha t ne o VI use s be twe e n e a ch tra nsm it byte .
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.
Figure 3 - If working with a GME CIM-SCL network select GME CIM-SCL.
neoVI Documentation - (C) Copyright 2000-2019 Intrepid Control Systems, Inc.
La st Upda te : Monday, May 24, 2010
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