Velodyne Acoustics SMSTM -1 Appendix A: RS-232 Serial Overview and Commands

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.www.velodyne.com Digital Drive User’s Manual
Introduction
This document outlines Velodyne’s Digital Drive (DD) RS-232 protocol specification. This
protocol indicates how Digital Drive products receive run-time commands from devices such as
Creston Universal Remote Controls.
Com Port Setup
Use standard communications settings: Baud Rate: 9600, Data Bits: 7, Parity: None,
Stop Bits:1
DD IN and OUT Port Pin Configuration
DD serial ports use a standard configuration that allows direct connection to a PC via a FEMALE
to MALE serial cable. It uses only 3 pins (Transmit, Receive, Ground).
The pin configurations are:
IN: Pin 2 =Transmit
Pin 3 =Receive
Pin 5 =Ground
OUT: Pin 2 =Receive
Pin 3 =Transmit
Pin 5 =Ground
Runtime Command Format
Byte Number Byte Description Notes
0 ‘#’ Header Character
1to 3 or 4 Command and 3 to 4 ASCII characters see formats below
Parameter Data Case sensitive -CAPS ONLY!
4 or 5 ‘$’ Termination Character (required or
command is ignored)
Appendix A: RS-232 Serial Overview and Commands