- Location
- East Sussex
Anyone know the pin outs for this please?
Excellent, just the job! Thanks. Can you think of any reason it won't speak to a Trimble system, the AFS system on a case puma.
Check serial comms settings match; baud rate, parity, stop bit etc. Typically is x baud rate with N81 (no parity, 8 bit word size, 1 stop bit)Excellent, just the job! Thanks. Can you think of any reason it won't speak to a Trimble system, the AFS system on a case puma.
I’ve finally got back on this as I’m ordering the steering motor for the sprayer after lamma, I’ve made up a cable with the pin outs you showed me, which I think is correct, I’m putting the NovAtel on the tractor so I can use the AFS 372 on the sprayer. The NovAtel lights up and the second light flashes orange, however the screen in the case tractor can’t seem to find it, no option to highlight anything, I’ve tried changing anything I can, taken photos so I can set back, no luck, any ideas, as I’ve said before I’m new to all of this and maybe I’m out of my depth. If I put the 372 back on it picks it straight up and works.As said firstly check over all your basic serial port cabling is correct (Tx and Rx are going from/to the correct port and pins and signal ground is present/connected), and your comms speed etc. settings match up.
I had a quick read of the North American AFS settings/troubleshooting FAQ page and looks like AFS prefers a 38,400bps baud rate - the default serial settings on the NovAtel appears to be 9600 bps, but I'd check just in case the NovAtel is set to something outside this range, like 115,200 bps...you never know.
The next step would be to confirm the NovAtel receiver is sending the correct NMEA message strings and the Hz rate is set to what the AFS expects (1 or 5 Hz). At a minimum the NovAtel would need to send at least GGA (optionally AFS system requires GSV messages to send it info about satellites in view, for satellite sky plot screen).
Good luck with it.
Thanks Rob, I’m going to take a punt it’s the Rx and Tx then I’ll change them over in the morning and try again, do you think the case Pro 700 screen will just pick it up and work once wired correctly or would you think I’ll need more setup by either myself or a dealer with his laptop? I’ll also try running through all the baud rates first as thinking about I only switched to 19000 something or other.It’ll be the baud rate of the novatel or you have Rx and tx the wrong way round.
That screen is for the NMEA output settings. What you want is the GPS inputs (three tabs over to the left) and select the correct serial port either RS232-A or RS232-B:Tractor was set to this before I started all this:
View attachment 615730
I may have made my mistake matching wires up, just hope it’s the Tx & Rx. The sprayer only has 6 wires going into the NovAtel where as the case setup is 8:
View attachment 615738
View attachment 615758
That’ll should work fine - do you recall what pins you wired from the Deutsch to the what pins on the NovAtel?I think I’ve changed them to no affect sadly. I’m not sure if this a mistake I’m making but what I’ve done is make a very short cable that the deutsch plug on the roof, that would plug into the 372, plugs into and then on the other end I’ve the plug that fits into the NovAtel.
Short answer no not usually, they should be manually matched. In some cases (an actual laptop etc usb-serial adapters) one side can reliably auto-detect the baud rate but better to play it safe.If the baud rate is incorrect will the screen/computer not recognise it.
The other thing I just noticed on your connectors is that pins 1, 2, 3, 4 and 5 are all wired in on your NovAtel connector.Yes I didn’t think the others were needed as not on the sprayer but after it didn’t work the first time I added them to the loom.
I’ll go through the screen again in the morning, I’m sure I’ve missed something simple.
If the baud rate is incorrect will the screen/computer not recognise it.
Thanks for the help again.