B&B Electronics Command Response Protocol HVD100A3 - Manual (Page 19)

HDV100A3 Command & Response Manual-1306cr 15
B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
After sending a transmit message to the HDV100A3 you will get
the confirmation message if the checksum is correct. A transmit complete
message is sent to the PC after the device successfully transmits the message
to the J1708 bus. A second message should not be sent to the device before
confirming that the first message has been sent. The transmit confirmation is
formatted as follows:
Byte
Number Byte Value
(hex) Byte Function
1 01 Start of frame
2 01 Number of control bytes
3 09 ID bytes 9 = transmit OK
8 00 Number of data bytes
9 0B Checksum