Rs232 Comms to magg...
 
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Question Rs232 Comms to maggy

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(@h2joe)
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Joined: 1 month ago
Posts: 1
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Hello all,

 

I'm currently working on a software project to integrate some Maggy's more effectively into our system.

I see that when the magnetometer starts up it outputs it's serial number as well as some other useful information.

I'd like to know if there is a serial command I can send that will initiate that information? A reset command for instance.

I've read the manual and it suggests that I can simply send 'Reset' via a serial console but have tried it multiple times and have not been able to receive that initial startup string when I try it.

Am I missing something? Or is there a terminator that I'm missing? 

I know it's possible as the digital console software can live reset the Maggy while it's sending data (same as what I want to achieve) so any help you could offer would be very gratefully accepted.

For your information I've used multiple serial console softwares none of which have worked


   
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(@ledwards)
Member Moderator
Joined: 2 years ago
Posts: 5
 

I have set up a G-882 system here at Geometrics and am receiving data and sending commands using TeraTerm (any terminal emulation program should work). When in normal use mode the Digital add on board sits in front of the G-882 and parses and acts on all commands coming in. There are two versions of the Digital Add On board, which are the GP120 and the GP140.  The GP140 is a newer version of the Digital Add ON board.  It is the GP140 Digital board that outputs all S/N (and other) information.

I first set up with the GP140 board (the newer version). I find that the ""RESET" command does work - i.e. it goes into BYPASS mode for a couple seconds, then output the S/N and configuration information, and reverts to normal operation with the digital depth and altimeter information.  But it only works every other time I send it.  The first time nothing happens.  Then I send it again and it works.  This appears to be a bug in the GP140.  For some commands the first command after power up or reset are ignored.  The second time (and subsequent commands) are executed.  The work around seems to be sending the RESET command twice.

I also tried an older G-882 with the GP120 Digital board.  The Reset (and other commands worked first time and every time.

BTW, the Digital Board version is in the second line with the S/N information that is sent on power up or Reset.

Some questions:

1) My configuration is one G-882 connected to a PC through the white junction box.  Is this your configuration, or do you have concatenated G-882's?

2) Can you get the G-882 to accept any commands (like going into Bypass Mode)?  I'm wondering if there is a open link in the command line from the PC to the Digital board.


   
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