ELM327(2005) 查看數據表（PDF） - Elm Electronics

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ELM327
(Rev.:2005)

OBD to RS232 Interpreter

Elm Electronics 

AT Command Summary

General Commands

D

set all to Defaults

E0

Echo Off

E1

Echo On

I

print the ID

L0

Linefeeds Off (default set by pin 7)

L1

Linefeeds On

WS

Warm Start (quick software restart)

Z

reset all

OBD Commands

AL

Allow Long (>7 byte) messages

BD

perform a Buffer Dump

BI

Bypass the Initialization sequence

DP

Describe the current Protocol

DPN Describe the Protocol by Number

H0

Headers Off (default)

H1

Headers On

M0

Memory Off (default set by pin 5)

M1

Memory On

MA

Monitor All

MR hh Monitor for Receiver = hh

MT hh Monitor for Transmitter = hh

NL

Normal Length (7 byte) messages

PC

Protocol Close

R0

Responses Off

R1

Responses On

SH yzz

Set Header

SH xx yy zz Set Header

SP h Set Protocol to h and save it

SP Ah Set Protocol to Auto, h and save it

ST hh Set Timeout to hh x 4 msec

TP h Try Protocol h

TP Ah Try Protocol h with Auto search

ELM327

CAN Specific Commands

CAF1 CAN Automatic Formatting On

CAF0 CAN Automatic Formatting Off

CF hhh set the ID Filter to hhh

CF hh hh hh hh set the ID Filter to hhhhhhhh

CFC1 CAN Flow Control On

CFC0 CAN Flow Control Off

CM hhh set the ID Mask to hhh

CM hh hh hh hh set the ID Mask to hhhhhhhh

CP hh set CAN Priority (only for 29 bit)

CS

show the CAN Status

ISO Specific Commands

IB 10 set the ISO Baud rate to 10400

IB 96 set the ISO Baud rate to 9600

SW hh Set Wakeup interval to hh x 20 msec

WM xx yy zz aa set the Wakeup Message

WM xx yy zz aa bb

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WM xx yy zz aa bb cc

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Misc. Commands

CV dddd Calibrate the Voltage to dd.dd volts

RV

Read the Voltage

ELM327QSA

Elm Electronics – Circuits for the Hobbyist

www.elmelectronics.com

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