Version 2.0.3 Preliminary Documentation – May be Subject to Change 23-36
Ramp Up
0ms to 10000ms
1000ms
This ramp will determine how long it
would take to ramp from the lowest of
the setpoints above to the highest.
Ramp Down
0ms to 10000ms
1000ms
This ramp will determine how long it
would take to ramp from the highest of
the setpoints above to the lowest.
4.6.
J1939 Command Message (Output) Setpoints
There are twelve setpoints per channel that are associated with the J1939 command message that
is received by the ECU from the network bus. This section describes how the ECU interprets and
uses the data in the message as the control input for the output.
J1939 Command Message Options
Name Range
Default
Notes
Command
PGN
0 to 65535
65288 +
(Channel
Number-1)
Note: PGN 65280 is the lowest Proprietary B message,
and is used by Input 1 as a default. Since there are
eight input channels, Output 1 uses a default of 65288
It is the user’s responsibility to select a PGN that
will not violate the standard
Response
Sent
0: No Response
1: Send ACK
2: Send Feedback
0: No
Response
When No Response is selected, the controller will use
the new command to adjust the output accordingly, but
it will not send any message to the bus acknowledging
that it has received the command.
When Send ACK is selected, the controller will send an
acknowledge message to indicate that it has received
the command, and that it will adjust the output
accordingly. If the controller will not accept the
message, it will send a negative acknowledgement.
When Send Feedback is selected, the controller will
send the Output Feedback Message.
Specific
Address
0 to 254
254 (Null)
This parameter can be used if the user wants the
controller to only accept command messages from a
signal source address, and ignore the Command PGN if
it is sent from any other address. This value is only
used with PDU1 Command PGNs and can be set
anywhere from 0 to 254. If this parameter is set to the
Null Address 254 ($FE), the controller will accept the
PGN from any module on the bus.
WARNING: The user must be aware that if the ECU
at the Recognized Address has Arbitrary Address
Capability, it may be forced to claim a different
address if an ECU with a high priority NAME claims
its address. Use this feature carefully, only when
there is no possibility that another, unpredictable
ECU might claim the Recognized Address.
Command
Timeout
0ms to 60000ms
0ms
This parameter can be used to cause the output to be
automatically shutoff if the command PGN for the
channel has not been received within this timeout
period.
A value of 0ms disables the timeout feature.
