CAN Messages Transmitted from Device - DBC v1.7
A DBC file for the below messages can be obtained by contacting Control support or via Email at support@cntrl.io or via WhatsApp at +44 7723 366 365.
TLM_Main – 0x600 (base transmit address + 0)
TLM_Keepalive - 0-255 sawtooth pattern
TLM_CPU_Temp - Modem CPU Core temperature
TLM_CPU_Usage – Not implemented
TLM_Uptime – Uptime of modem in seconds, useful to validate modem reboots
TLM_Suppress_Echo – TLM_Suppress value currently being received by the modem (see message 0x610)
TLM_TelemIO_Echo – TLM_TelemIO value currently being received by the modem (see message 0x610)
TLM_Transmit_Mode_Echo - TLM_Transmit_Mode value currently being received by the modem (see message 0x610)
TLM_TargetIP_Echo – TLM_TargetIP value currently being received by the modem (see message 0x610)
TLM_Device – 0x607 (base transmit address + 7)
TLM_SerialNumber – Modem serial number
TLM_Firmware_Major – Modem firmware major version
TLM_Firmware_Minor – Modem firmware minor version
TLM_Firmware_Revision – Modem firmware revision version
TLM_Device2 – 0x608 (base transmit address + 8)
TLM_Voltage_Input_mV – Input Voltage Pre Ultracapacitor (battery voltage)
TLM_Voltage_Cap_mV – Input Voltage Post Ultracapacitor
TLM_Telemetry_1 – 0x601 (base transmit address + 1)
TLM_ActiveModem
Active modem, 0 indicates unable to transmit, modes that use multiple modems are represented by their own values as described in the DBC file
TLM_DataBufferKB
Amount of data in modem buffer, this will rise if the modem is unable to transmit due to connectivity constraints and will fall as the buffer is flushed. In normal real-time running this value will be 0
TLM_Telemetry_2 – 0x602 (base transmit address + 2)
TLM_DataReceivedKB
Amount of data received from logger
TLM_DataTransmittedKB
Amount of data transmitted by modem - could be less than TLM_DataReceivedKB if optimisation is enabled or data has been thrown away because of suppress mode or hasn’t been sent for any other reason
TLM_Telemetry_3 – 0x606 (base transmit address + 6)
TLM_TelemetryPacketsReceived – Amount of telemetry packets the modem decoded from the incoming data stream
TLM_TotalPacketsReceived – Includes data packets that were not able to be identified as telemetry packets
TLM_Telemetry_4 – 0x609 (base transmit address + 9)
TLM_RetransmitPacketsRx– Number of retransmit request packets received, each packet can request multiple packets so no expected direct correlation with the number of retransmitted packets
TLM_RetransmitPacketsTx– Number of telemetry packets that have been retransmitted following a request
TLM_RetransmittedKB – Amount of data that has been retransmitted
TLM_Modem_1 – 0x603 (base transmit address + 3) – TLM-P1 + TLM-P2
TLM_Modem1_MCC – Mobile Country Code, Indicates the country in which the modem is connected
TLM_Modem1_MNC – Mobile Network Code, indicates the mobile network the modem is connected to
TLM_Modem1_Radius_State – Indicates if there is a valid RADIUS authentication session for a data connection
TLM_Modem1_Link_State – Indicates if there is a radio link available
TLM_Modem1_RAT – Radio Access Technology in use (for example 3G or LTE as defined in the DBC file)
TLM_Modem1_RSSI – Indicates signal strength
TLM_Modem1_SurePathState – Indicates if data transit is possible over this connection
TLM_Modem1_SIMRegistered – Indicated if the SIM is registered to a mobile network
TLM_Modem_2 – 0x604 (base transmit address + 4) – TLM-P1 Only
See TLM_Modem_1 for explanation of values
TLM_Modem_2 – 0x605 (base transmit address + 5) – TLM-P1 Only
See TLM_Modem_1 for explanation of values