ELM327P datasheet(40/51 Pages) ELM

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ELM327DSC

Elm Electronics – Circuits for the Hobbyist

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ELM327

Programmable Parameters (Cont’d)

Here are some example baud rates, and the divisor to be used for

each:

Baud Rate

(kbps)

19.2

38.4

57.6

115.2

230.4

PP 0C value

D0 (208)

(104)

(69)

(35)

(17)

Note that the PP 0C value must be provided to the ELM327 as

hex digits only. The decimal values that are shown above in

brackets are for your convenience only.

500

(8)

Description

Values

Default

Type

Carriage Return Character

J1850 voltage settling time

setting = value x 4.096 msec

J1850 Break Signal monitor enable

(reports BUS ERROR if break signal duration limits are exceeded)

Auto search time delay between protocols 1 & 2

setting = value x 4.096 msec

ISO baud rate (AT IB default setting)

(10.4K)

ISO wakeup message rate (AT SW default setting)

setting = value x 20.48 msec

CAN auto formatting (AT CAF default setting)

CAN filler byte (used to pad out messages)

(53 msec)

Auto search time delay between protocols 4 & 5

setting = value x 4.096 msec

(no delay)

CAN auto flow control (AT CFC default setting)

(2.99 sec)

(see note 2)

(205 msec)

(ON)

(cont’d)

00 to FF

00 = ON

FF = OFF

00 = 96

FF = 10

00 = ON

FF = OFF

00 = ON

FF = OFF

hex (dec)

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