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the CAN bus, the BMS will receive the message and write the data received into the configured
register address. The data sent with the message must match the expected size and sign of the
register.
Register
stack_trigger_summary[0].clear_faults
stack_trigger_summary[0].clear_warnings
stack_control[0].requested_state
sc_controller_heartbeat[0].value
7.8.1.5. Special Application Note: Conditional Message Transmission
In some cases, it may be desirable to only broadcast a message when a certain condition is true. For
example, an application may require that a message be broadcast when a GPI is set. This can be
achieved by utilizing bulk reporting and setting sc_canbus_bulk_map[0].baseenabledaddress to the same
thing as sc_canbus_bulk_map[0].baseaddress. Thus, the following configuration would result in Nuvation
Energy BMS only transmitting a message when GPI[0] is 1:
Register
sc_gpi[0].address_enabled
sc_gpi[0].inverted
sc_canbus_bulk_map[0].baseaddress
sc_canbus_bulk_map[0].baseenabled
sc_canbus_bulk_map[0].numtoread
7.8.2. RS485 Modbus RTU
Refer to
Section 8.1
for more information on using this interface.
The slave device address used by the BMS for Modbus RTU may be customized as required.
sc_modbus_rtu.device_address
▪
Set to the desired Modbus RTU slave device address
7.9. Measurement Calibration
The Nuvation Energy BMS provide calibration settings which allow the system to be fine-tuned for
integration with a variety of measurement sensors. The preset values that ship with the BMS can be
adjusted as required.
7.9.1. Thermistor Calibration
Nuvation Energy BMS can be configured to use any thermistor. A function that converts measured
voltage into temperature must be determined and configured for the particular thermistor in use.
Document ID: NE-PM-002
Table 26. CAN Command Register Configuration
Operation
Set to 1 to clear faults
Set to 1 to clear warnings
Set to 1 or 0 to connect or disconnect (respectively) a battery from the DC bus
Write any value to update the controller heartbeat and prevent the watchdog timer from
expiring (if configured)
Table 27. Special Application of Bulk CAN Reporting
Nuvation Energy Low-Voltage BMS - Product Manual
Setting
1
0
@sc_gpi[0].value
@sc_gpi[0].value
1
122
Rev 1.2, 2021-03-03
Curie Update 1
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