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MV5-AR USER MANUAL
4. CAN Messages and Communication
4.1 Standard Broadcast Data
These PGNs are standard default data broadcast by device at 100Hz (interval 10 ms). The
channels may be disabled individually. The broadcast intervals are programmable individually
from 2 to 500 ms. To decode a given field, extract the relevant bits, multiply by the resolution,
and add the offset. The ranges given are protocol limitations only and do not necessarily
reflect the true sensor ranges, which may exceed the protocol range.
Many of these PGNs contain figures of merit, as specified by the J1939 standard. The values
are as follows:
Value
Definition
0
Output is functioning normally.
1
Output quality may be degraded.
2
Error condition.
3
Figure of merit information is not available.
4.2 CAN J1939 Device Information
Data supplied by the MV5-AR is communicated through the CAN J1939 communications
interface. To learn more about SAE J1939 communication standards, go to:
4.2.1 CAN J1939 Device Information
29 BIT IDENTIFIER
Name
Bits
Bit position
Description
Priority
3
29..27
0 through 7, lower is higher priority.
R
1
26
Reserved (default 0)
DP
1
25
Data Page (default 0)
PDU Format
8
24..17
PDU1 format if < 0xF0 (240). Otherwise
PDU2 format.
PDU Specific
8
16..9
Used for PDU2 format PGNs. Destination
is always broadcast (0xFF).
Source
8
8..1
Source address of MV5
