UMAX090600 Version 1
Preliminary Documentation – May be Subject to Change
19-48
The
“Transmit Data Size”
,
“Transmit Data Index in Array (LSB)”
,
“Transmit Bit Index in Byte
(LSB)”
,
“Transmit Resolution”
and
“Transmit Offset”
can all be use to map the data to any SPN
supported by the J1939 standard. The defaults used by the CAN-BC-LED are all for proprietary
SPNs, and are defined in detail in Section 3.3.
Note: CAN Data = (Input Data – Offset)/Resolution
The CAN-BC-LED Controller supports up to 8 unique CAN Transmit Messages, all of which can be
programmed to send any available data to the CAN network. By default, only the first message is
pre-configured to send information regarding the charging status, charging current, battery voltage,
supply voltage data. The details are outlined in Section 3.3, and the default list is shown in
Table 5
below.
Block # Default Transmit Data
(PGN)
1
Battery Charge Stage
(0xFF00)
2
Power Supply Voltage Measured
(0xFF00)
3
Battery Voltage Measured
(0xFF00)
4
Current Feedback Measured
(0xFF00)
5
Control Source Not Used
(0xFFFF)
6
Control Source Not Used
(0xFFFF)
7
Control Source Not Used
(0xFFFF)
8
Control Source Not Used
(0xFFFF)
Table 5: Default CAN Transmit Messages
