CanBus info/help
CanBus info/help
(OP)
Hello everyone, I am involved in an application using an Isuzu engine driving an off highway vehicle. The engine is fully Canbus.
I am using a touchscreen for user interface, and a Modbus capable plc for control.
For the Canbus to Modbus interface I am using a BridgeWay AB7606, J1939 to Modbus.
My problem is that I am a Canbus newby, I have to map my Modbus memory locations to be able to receive the canbus messages, most of the messages from the engine bus will be broadcast, but I will also be selecting set engine RPMs by sending messages to the bus.
I have a list from Isuzu with the can codes but I am stumped from there.
Below is a description of the info I have so far;
I have the following from the ISUZU documentation:
Canbus
Engine oil pressure
SPN = 100
transmission repetition 500 msec
Arbritration field
P = 6
R = 0
DP = 0
PF = 254
PS OR GE = 239
SOURCE ADD = 0
Data Field
DL = 8
BYTE = 4
BIT = 8-1
DATA RANGE = 0-1000kpa
RESOLUTION = 4kpa
OFFSET = 0
DEFAULT DATA = 0
The configuration software for the BridgeWay AB7606 has the following in the J1939 Input and Output I/O Tables
Table Offset (I presume this would be 0)
Data Length ?
PGN ?
Target Address
Update Rate 500ms
Message offset ?
Thanks,
EdmontonControls
I am using a touchscreen for user interface, and a Modbus capable plc for control.
For the Canbus to Modbus interface I am using a BridgeWay AB7606, J1939 to Modbus.
My problem is that I am a Canbus newby, I have to map my Modbus memory locations to be able to receive the canbus messages, most of the messages from the engine bus will be broadcast, but I will also be selecting set engine RPMs by sending messages to the bus.
I have a list from Isuzu with the can codes but I am stumped from there.
Below is a description of the info I have so far;
I have the following from the ISUZU documentation:
Canbus
Engine oil pressure
SPN = 100
transmission repetition 500 msec
Arbritration field
P = 6
R = 0
DP = 0
PF = 254
PS OR GE = 239
SOURCE ADD = 0
Data Field
DL = 8
BYTE = 4
BIT = 8-1
DATA RANGE = 0-1000kpa
RESOLUTION = 4kpa
OFFSET = 0
DEFAULT DATA = 0
The configuration software for the BridgeWay AB7606 has the following in the J1939 Input and Output I/O Tables
Table Offset (I presume this would be 0)
Data Length ?
PGN ?
Target Address
Update Rate 500ms
Message offset ?
Thanks,
EdmontonControls





RE: CanBus info/help
I've tried the PLC thru bridge or gateway approach a few times, and always found it a lot of trouble for a smaller project.
Just a suggestion.
RE: CanBus info/help
we are repowering a locomotive with an electronic cummins engine, i dont intendto have any gauges per se i intend to use Murphy PVv1000 for display, a Twido Extreme to do any additional inputs and gear change on the Niigata Converter and use the CanJ1939 bus to share information. i am confident it will work Schneider say it should.
i am trying to do it as simply and as elegantly as i can , i shudder thinking of having to convert to and from modbus to talk to a display.
All of these have CanJ1939 as standard.
RE: CanBus info/help
RE: CanBus info/help
RE: CanBus info/help
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RE: CanBus info/help