ELM327
Programmable Parameter Summary (continued)
PP
Description
Values
Default
Type
0E
Power Control options
Each bit controls an option, as follows:
b7: Master enable 0: off
00 to FF
9A
R
(10011010)
1: on
if 0, pins 15 and 16 perform as described for v1.0 to v1.3a
(must be 1 to allow any Low Power functions)
b6: Pin 16 full power level
0: low
1: high
normal output level, is inverted when in low power mode
b5: Auto LP control 0: disabled 1: enabled
allows low power mode if the RS232 activity stops
b4: Auto LP timeout
0: 5 mins
1: 20 mins
no RS232 activity timeout setting
b3: Auto LP warning
0: disabled 1: enabled
if enabled, says ‘ACT ALERT’ 1 minute before RS232 timeout
b2: Ignition control 0: disabled 1: enabled
allows low power mode if the IgnMon input goes low
b1: Ignition delay 0: 1 sec 1: 5 sec
delay after IgnMon (pin 15) returns to a high level, before
normal operation resumes
b0: reserved for future - leave set at 0
0F
Activity Monitor options
00 to FF
D5
D
(11010101)
Each bit controls an option, as follows:
b7: master control
0: disabled 1: enabled
must be 1 to allow b3 to b6
b6: allow wake from Low Power
0: no 1: yes
wake requires shift from no activity to activity
b5: Auto LP control 0: disabled 1: enabled
allows low power mode if the OBD activity stops
b4: Auto LP timeout
0: 30 secs 1: 150 secs
no OBD activity timeout setting
b3: Auto LP warning
0: disabled 1: enabled
if enabled, says ‘ACT ALERT’ on timeout
b2: reserved for future - leave set at 1
b1: allow exclamation mark
0: no
1: yes
if 1, adds ‘!’ before ACT ALERT and LP ALERT
b0: LP LED 0: disabled 1: enabled
if 1, the OBD Tx LED will flash when in Low Power mode
(16 msec flash every 4 seconds)
10
J1850 voltage settling time
setting = value x 4.096 msec
00 to FF
0D
R
(53 msec)
ELM327DSI
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