ELM327P datasheet(17/51 Pages) ELM

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ELM327

ELM327DSC

Elm Electronics – Circuits for the Hobbyist

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AT Command Summary

General Commands

BRD hh

try Baud Rate Divisor hh

BRT hh

set Baud Rate handshake Timeout

set all to Defaults

E0, E1

Echo Off, or On*

print the version ID

L0, L1

Linefeeds Off, or On

M0, M1

Memory Off, or On

Warm Start (quick software restart)

reset all

<CR>

repeat the last command

OBD Commands

Allow Long (>7 byte) messages

Automatically Receive

AT0, 1, 2

Adaptive Timing Off, Auto1*, Auto2

perform a Buffer Dump

Bypass the Initialization sequence

Describe the current Protocol

DPN

Describe the Protocol by Number

H0, H1

Headers Off*, or On

Monitor All

MR hh

Monitor for Receiver = hh

MT hh

Monitor for Transmitter = hh

Normal Length messages*

Protocol Close

R0, R1

Responses Off, or On

SH xyz

Set Header

SH xxyyzz Set Header

SP h

Set Protocol to h and save it

SP Ah

Set Protocol to Auto, h and save it

SR hh

Set the Receive address

ST hh

Set Timeout to hh x 4 msec

TP h

Try Protocol h

TP Ah

Try Protocol h with Auto search

J1850 Specific Commands (protocols 1 and 2)

IFR0, 1, 2

IFRs Off, Auto*, or On

IFR H, S

IFR value from Header or Source

ISO Specific Commands (protocols 3 to 5)

IB 10

Set the ISO Baud rate to 10400*

IB 96

Set the ISO Baud rate to 9600

IIA hh

Set the ISO (slow) Init Address to hh

KW0, KW1

Key Word checking Off, or On*

SW hh

Set Wakeup interval to hh x 20 msec

WM [1 - 6 bytes]

Set the Wakeup Message

CAN Specific Commands (protocols 6 to C)

CAF0, CAF1

Automatic Formatting Off, or On*

CF hhh

set the ID Filter to hhh

CF hhhhhhhh set the ID Filter to hhhhhhhh

CFC0, CFC1

Flow Control Off, or On*

CM hhh

set the ID Mask to hhh

CM hhhhhhhh set the ID Mask to hhhhhhhh

CP hh

set CAN Priority (only for 29 bit)

show the CAN Status

DM1

(J1939) Monitor for DM1 messages

FC SM h

Flow Control Set the Mode to h

FC SH hhh

FC Set the Header to hhh

FC SH hhhhhhhh FC Set the Header to hhhhhhhh

FC SD [1 - 5 bytes] FC Set Data to [...]

MP hhhh

(J1939) Monitor for PGN hhhh

Misc. Commands

CV dddd

Calibrate the Voltage to dd.dd volts

PP xx OFF

disable Prog Parameter xx

PP FF OFF

all Prog Parameters Off

PP xx ON

enable Prog Parameter xx

PP FF ON

all Prog Parameters On

PP xx SV yy

for PP xx, Set the Value to yy

PPS

print a PP Summary

Read the Voltage

* = default setting

ELM327P Datenblatt(PDF) 17 Page - ELM Electronics

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