Velodyne SMS-1 - Manual (Page 45)

www.velodyne.com Digital Drive SMS-1 User’s Manual - 39
APPENdIx A:
RS-232 SERIAL OVERVIEW ANd COMMANdS
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
1 to 3 or 4 Command and Parameter Data 3 to 4 ASCII characters see formats below.
Case sensitive - CAPS ONLY!
4 or 5 ‘$’ Termination Character (required or command is
ignored)