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B&B Electronics LDVDSV2-S-P9D - Manual User Manual

Page 41

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OBDII Streamer Command & Response

V2.11

Page 41/49

Time

Description

Value (min-max)

T1

Streamer to host response time. Used by the
host software as a timeout value for host to
streamer communications timeouts. If the
streamer has not responded within the max
time value, the host will time out and terminate
the update.

0-25 Seconds

T2

Time needed to switch to the default update
baud rate. Minimal guaranteed timeout is 5
seconds after which Streamer will send “ready”
string indicating readiness to receive S-records.

5-35 seconds

T3

Host to Streamer response time. Used by the
streamer as a timeout value for streamer to host
communications timeouts.
If no s-record is sent to the device after T3
timeout after the ready to receive “@@&&” is
sent then ready to receive will be sent 2
additional times.
Time out for the streamer to wait for the next
S-record to arrive after sending a ”#” indicating
that the streamer is ready for the next S-record.

0-45 seconds

T4

Time from acknowledgement of last S-record
received to restart of streamer.

0-45 seconds.




If an error occurs then the streamer will send a two byte error code ASCII “E” followed
by a numeric digit.

Error Code Name

Description

Error Code

S-record timeout

Streamer did not receive the complete S-
record in the allotted time period (T3).

E0

S-record checksum

S-record checksum did not match calculated
checksum. The streamer will expect the host
to resend the S-record otherwise it will time
out.

E1

Hardware Failure

Attempts to program the Flash device failed
multiple times. FPGA will not reboot.

E2

Invalid S-record

S-record format error, message corrupted

E3