Pin outs novatel

[Matt77]

Anyone know the pin outs for this please?

 

[Pheasant Surprise]

User manual is on their website. See page 13.

 

[Matt77]

User manual is on their website. See page 13.

View attachment 580488

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.

 

[Pheasant Surprise]

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)

 

[Pheasant Surprise]

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.

 

[Matt77]

Thanks again, I see how I get on.

 

[Matt77]

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.

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.

 

[Robt]

It’ll be the baud rate of the novatel or you have Rx and tx the wrong way round.

 

[Matt77]

It’ll be the baud rate of the novatel or you have Rx and tx the wrong way round.

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.

 

[Pheasant Surprise]

Think the 372 will be connecting to the 700 screen at 38,400 bps - so give that setting a try on the NovAtel receiver serial port.

Something I also noticed in the 700 screen docs:

"NOTE: The RS-232B, DB-9 connector (located on the back of the display) can be used for GPS input, but it re- quires an adapter harness to provide ground for the receiver."

 

[Matt77]

Tractor was set to this before I started all this:

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:

 

[Pheasant Surprise]

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 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:

 

[Matt77]

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.

 

[Pheasant Surprise]

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.

That’ll should work fine - do you recall what pins you wired from the Deutsch to the what pins on the NovAtel?

 

[Matt77]

I think this is what I’ve done:
Taken from the pinout pics you sent me
Deutsch plug this side - NovAtel this side:
signal ground - signal ground
V+ in - power positive
V- in - power negative
Rs232 Tx out - com1 TxD
Rs232 Rx in - com1 RxD
Can A high - Can +
Can A low - Can -
PPS out - PPS output
I hope that makes sense

 

[Pheasant Surprise]

That looks fine. For the avoidance of doubt, the pin to pin assignment I reckon then is:

Deutsch DTM to NovAtel
Pin 2 (Tx) to Pin 1 (Tx)
[Pin 3 (Rx) to Pin 2 (Rx)] <- not really needed
Pin 5 (signal ground) to Pin 5
Pin 10 (+ve supply) to Pin 14
Pin 11 (-ve supply) to Pin 9

You don’t need PPS or CAN connections.

Next thing to check is the GPS input settings on the 700 screen and ensure the NovAtel is putting the same out with matching baud rate.

 

[Matt77]

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.

 

[Pheasant Surprise]

If the baud rate is incorrect will the screen/computer not recognise it.

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.

 

[Robt]

If the baud rate is wrong the screen will NOT recognise it. If you are very lucky you may it recognise it for a split second but that’s a doubt.

 

[Pheasant Surprise]

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.

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.

We (rather I) are assuming the NovAtel is setup to output data on its ‘default’ COM1 (pins 1 and 2) but it’s worth checking COM2 (pins 3 and 4) are not active, so just maybe check and swap the Tx pin from 1 (orange wire) to 3 (blue wire) going to your 700’s Deutsch plug, if that makes sense.

Then again could just be a standard loom connector setup presenting both COM ports out of the unit.