Enable_ALT_CAN: <WHOLE NUMBER ( 0 255 ) > Though RBMs supporting RV-C/OSEnergy protocols provide the best level of integration, there are other CAN based BMS and remote sensors which may be utilized. Enable_ALT_CAN is a way to signal which of those additional protocols to support. Note that some protocols are able to provide full RBM direction, while others only offer a limited amount of remote sensing. It is up to the installer to assure which messages are supported by the attached device and if the resulting system integrations meet expectations and needs. A value of 0 (default) will disable any additional CAN protocol support, and it should also be noted that a given device may require other configuration changes such as adjusting CAN baud rate, and even disabling some optional protocols supported (e.g., NMEA2000)
Protocol
Value
Features
Battery current and temperature via NMEA2000 battery monitor. BMS devices supporting 11- bit ‘Sunny’ SMA type messages . Aka, ‘Victron BMS’ protocol Enabled active regulation of battery current to 0A (and passed voltage goal) instead of disabling alternator with so signaled from BMS.
NMEA2000 RAT
1
SMA
2
SMA w/’Zero Output Technology” enabled.
3
MG Energy Systems
4
Support for MG Energy Systems BMS.
MG Energy Systems w/’Zero Output Technology” enabled.
MG Energy Systems BMS with active regulation of battery current to 0A. Support for Discover Battery CAN messages Support for Discover Battery with active regulation of battery current to 0A when SOC >= 100%
5
Discover
6
Discover w/’Zero Output Technology” enabled.
7
Support for Lithium Werks BMS using proprietary communications protocol.
Lithium Werks
11
Utilizes active regulation of battery current to 0A when ‘do not charge’ state is requested from BMS.
Lithium Werks w/’Zero Output Technology” enabled.
12
LUX
13
‘LUX’ 11 -bit BMS protocol.
Enabled active regulation of battery current to 0A (and passed voltage goal) instead of disabling alternator with so signaled from BMS.
LUX w/’Zero Output Technology” enabled.
14
Victron LYNX BMS
16
Support for Victron LYNX BMS
Victron LYNX BMS w/’Zero Output Technology” enabled.
LYNX BMS with active regulation of battery current to 0A.
17
Table 3 – Alternative CAN protocols support
Note: Prior to Firmware v 2.1.0, Enable_ALT_CAN was a single value of 0 or 1 and used to specify only NMEA200_RAT support. Refer to Appendix A: CAN enabled BMS for additional details.
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