05/06/2017
by Oleg Lyan

J1939

J1939

You Could Add CAN J1939 proprietary support for HD vehicles Road/Off-Road

Status: just an idea

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Comments: 3
RA
Riccardo Arienti

Dear Oleg, all of our keypads support J1939 protocol. Is the one you refer to as proprietary something different than this?

OL
Oleg Lyan

Well it is no different, the PGNs which are not Engine related or something important are fit for Manufacturer Proprietary PGNs. The questions are with Address. I have CAN devices, which claim the address by shorting 2 digital inputs to LOW/FLOAT or vice versa. Which allow to have 4 maximum of each different device on the bus, which feels like a limit of architecture, the device does not support SA arbitration according to J1939 either. Which means addresses are occupied 1Eh/1Fh/20h/21h and another device the same solution B0h/B1h/B2h/B3h. So how I am I supposed to connect multi-manufacturer devices on a bus if some claim a specific address. So It would be a really nice feature to have a pre-configurable in a wide range or arbitration address. Example: Also one receives messages from SA 11h regardless of the actual SA claimed by the configuring and controlling device(s). If a system has a cruise control or steer axle controller, the SA may conflict with the device (what???). Looking forward for best design

RA
Riccardo Arienti

thank you Oleg. We will try to look more deeply at your request.

  • New features
  • software

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Application fields

TRUCK - CARAVAN