{"id":331,"date":"2010-02-05T05:51:16","date_gmt":"2010-02-05T05:51:16","guid":{"rendered":"http:\/\/ravtrack.com\/GPStracking\/?p=331"},"modified":"2010-02-05T05:51:16","modified_gmt":"2010-02-05T05:51:16","slug":"identifying-digital-input-states-in-a-prave-message","status":"publish","type":"post","link":"https:\/\/www.raveon.com\/data_radio_info\/identifying-digital-input-states-in-a-prave-message-331\/","title":{"rendered":"Identifying Digital Input States in a $PRAVE message"},"content":{"rendered":"

The $PRAVE message has the status of each input as represented by a single digit hexadecimal number in field 12. For example, the the $PRAVE message below, the last 3<\/span> represents the digital inputs from transponder 0001.<\/p>\n

$PRAVE,0001,0001,3308.9051,-11713.1164,195348,1,10,168,31,13.3,3<\/strong><\/span>,-83,0,0,,*66<\/p>\n

In this example field 12 has value 3.\u00a0 The field 12 value is the hexadecimal binary representation of the bits.\u00a0 Refer to the following table:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\n

IN 2
\n<\/em><\/strong>(TXD)<\/em><\/strong> <\/em><\/strong><\/td>\n

\n

IN 1
\n<\/em><\/strong>(RTS)<\/em><\/strong> <\/em><\/strong><\/td>\n

\n

IN 0
\n<\/em><\/strong>(DTR)<\/em><\/strong> <\/em><\/strong><\/td>\n

\n

Hexadecimal Representation<\/em><\/strong> <\/em><\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

0<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n<\/tr>\n

\n

0<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n<\/tr>\n

\n

0<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n

\n

2<\/p>\n<\/td>\n<\/tr>\n

\n

0<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n

\n

3<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n

\n

4<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n

\n

5<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n

\n

0<\/p>\n<\/td>\n

\n

6<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n

\n

1<\/p>\n<\/td>\n

\n

7<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The stock RV-M7 GX<\/em> has up to 3 digital inputs, using the input pins of the RS-232 serial port.\u00a0 An open circuit or ground is a 0, and if they are connected to a positive voltage greater than 3V, they are a digital 1. <\/strong>If all 3 pins are allowed to float (nothing connected \u2013 same as ground) the value should be 0.\u00a0 If positive voltage is applied to a pin the pin value will be 1.\u00a0 The field 12 value will be 1 or 2 or 4, depending on which pin had the voltage applied. <\/strong><\/p>\n

<\/strong><\/p>\n\n\n\n\n\n\n\n
\n

RS-232 Pin<\/strong> <\/strong><\/p>\n<\/td>\n

\n

Function<\/strong> <\/strong><\/p>\n<\/td>\n

\n

<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

4 – DTR<\/p>\n<\/td>\n

\n

Input 0<\/p>\n<\/td>\n

\n

\n<\/td>\n<\/tr>\n

\n

7 – RTS<\/p>\n<\/td>\n

\n

Input 1<\/p>\n<\/td>\n

\n

\n<\/td>\n<\/tr>\n

\n

3 – TXD<\/p>\n<\/td>\n

\n

Input 2<\/p>\n<\/td>\n

\n

\n<\/td>\n<\/tr>\n

\n

5 – Ground<\/p>\n<\/td>\n

\n

GND<\/p>\n<\/td>\n

\n

Connect to vehicle chassis or other ground point.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Note that the weatherproofed (-WX) model has less RS-232 pins and only 2 digital inputs.\u00a0 Inputs 1 and 2 are valid, but input 0 is indeterminate (state can float).<\/p>\n

In the RavTrack PC software it is easy to not monitor this missing pin<\/span>, so any change of state or change of value of this pin would not matter to the software.\u00a0 Simply configure this input as unused.<\/p>\n

\"1aa\"<\/p>\n\n\n\n\n\n\n
\n

RS-232 Pin<\/strong><\/p>\n<\/td>\n

\n

Function<\/strong><\/p>\n<\/td>\n

\n

<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

4 – RTS<\/p>\n<\/td>\n

\n

Input 1<\/p>\n<\/td>\n

\n

\n<\/td>\n<\/tr>\n

\n

3 – TXD<\/p>\n<\/td>\n

\n

Input 2<\/p>\n<\/td>\n

\n

\n<\/td>\n<\/tr>\n

\n

5 – Ground<\/p>\n<\/td>\n

\n

GND<\/p>\n<\/td>\n

\n

Connect to vehicle chassis or other ground point.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

On the M7 series of transponders, if an input is left floating\/unconnected, the transponder will read it as a digital 0 (low), and report it this way.<\/p>\n","protected":false},"excerpt":{"rendered":"

The $PRAVE message has the status of each input as represented by a single digit hexadecimal number in field 12. For example, the the $PRAVE message below, the last 3 represents the digital inputs from transponder 0001. $PRAVE,0001,0001,3308.9051,-11713.1164,195348,1,10,168,31,13.3,3,-83,0,0,,*66 In this example field 12 has value 3.\u00a0 The field 12 value is the hexadecimal binary representation […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[35],"tags":[],"_links":{"self":[{"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/posts\/331"}],"collection":[{"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/comments?post=331"}],"version-history":[{"count":0,"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/posts\/331\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/media?parent=331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/categories?post=331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.raveon.com\/data_radio_info\/wp-json\/wp\/v2\/tags?post=331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}