B&B Electronics LDVDSV2-S-P9D - Manual - Manual (Page 24)

OBDII Streamer Command & Response
V2.11
Page 24/49
If one byte value 0xFF is used for PARAMETER_LIST
then all the supported parameters will be either enabled or
disabled according to the ENABLE/DISABLE byte.
NOT_SUPP
Variable length field containing one byte for each
parameter that was requested to be enabled/disabled, but is
not supported by the vehicle. This may be a zero length
field.
CS
Summation checksum
Example 1: Enable Parameters
TX: 0x01 0x01 0x21 0x04 0x01 0x00 0x02 0x03 0x2D
RX: 0x01 0x01 0xA1 0x02 0x01 0x00 0xA6
The command sent requests Throttle Position and Odometer to be enabled. All
parameters that were requested to be enabled are supported by the vehicle.
Example 2: Enable Parameters
TX: 0x01 0x01 0x21 0x04 0x01 0x00 0x02 0x03 0x2D
RX: 0x01 0x01 0xA1 0x03 0x01 0x00 0x02 0xA9
The command sent requests Throttle Position and Odometer to be enabled. All
parameters that were requested to be enabled are supported by the vehicle except for
Throttle Position.
Example 3: Read Enabled Parameters
TX: 0x01 0x01 0x21 0x01 0x00 0x24
RX: 0x01 0x01 0xA1 0x03 0x00 0x00 0x01 0xA7
The command sent requests a list of all enabled parameters. Vehicle Speed and Engine
Speed are enabled and listed in the response.
Example 4: Disable Parameters
TX: 0x01 0x01 0x21 0x04 0x01 0x01 0x02 0x03 0x2E
RX: 0x01 0x01 0xA1 0x03 0x01 0x01 0x02 0xAA
The command sent requests that Throttle position and Odometer be disabled. The
response indicates that all the requested parameters except Throttle position were
supported and have been disabled.
Note: Engine Speed and Vehicle Speed cannot be disabled.