SL900A datasheet(34/103 Pages) AMSCO

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[v1-12] 2018-Oct-29

SL900A − Custom Command Description

Set Log Mode

The SET LOG MODE command sets the logging form, storage

rule, enables sensors that are used in the logging process and

sets the logging interval (in 1 second steps). A battery check is

carried out after a Set Log Command and before each logging

measurement. If the battery voltage is low, the `low battery flag`

is set and no measured data will be written to EEPROM. The

battery check is separate and independent from the battery

measurement enable. Battery measurement enable determines

if the battery voltage is measured and logged in EEPROM.

Command Structure:

In case the operation is successful, the following reply will be

sent:

Successful Reply Structure:

The “Log Mode” Field is Composed as:

Log Interval[14:0] is in seconds, with 0 => 1s interval, 1=> 2s

interval.

SOF

Custom

Command Code

Log Mode

Handle

CRC

Frame - sync

0xE0

0xA1

24 bits

16 bits

SOF

Header

Handle

CRC

EOF

Pilot tone + preamble

1 bit [0]

16 bits

Dummy bit [1]

Bit

Number

23 … 21

15 … 1

Function

Logging

form [2:0]

Storage

rule

Ext.1 sensor

enable

Ext.2sensor

enable

Temp. sensor

enable

Battery

measurement

enable

Log interval

[14:0]

RFU

SL900A Datasheet(PDF) 34 Page - ams AG

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