Mipex MIPEX-04, User Manual, Page: 27 / 41

Optosense LLC USER MANUAL
Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR
ESAT.100000.00.02 UM Revision 02 December 12th, 2016 Page 27 of 41
THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.
Appendix C.2. Communication protocol commands
There are several types of commands used for communication with sensor:
1. commands for requesting measured data (see Appendix C.2.1);
2. commands for controlling operating mode (see Appendix C.2.2);
3. commands for requesting factory settings and properties (see Appendix C.2.3);
4. commands for sensor configuring and span calibration (see Appendix C.2.4).
Always check command syntax before sending. Commands that are not listed in
this user manual are prohibited. Otherwise, it may result in malfunction of sensor.
Appendix C.2.1. Commands for requesting measured data and diagnosing
There are four commands available for user to request concentration value. Primary
command to request measured data is <@*X> as it requires minimum power to process it.
Sending rate of these commands should not be more than 0.5 Hz.
Request
syntax
USER
mode
OEM
mode
Response description Command description
@ yes
yes
2 bytes in hexadecimal format
(see Table 8).
Returns sensor readings of scaled
concentration C
1
(not periodically,
single time only).
@*X yes yes
“@” symbol and 2 bytes in
hexadecimal format (see Table
8).
Returns sensor readings of scaled
concentration
C
1
periodically
(every [1.32
± 0.04] ×
X seconds),
where X is a value within the
range 0…9 in ASCII format).
CCS yes yes
5 bytes in ASCII format and
“0D” symbol. Returns sensor current ambient
temperature in Celsius degrees.
CFS yes yes
5 bytes in ASCII format and
“0D” symbol.
Returns sensor current ambient
temperature in Fahrenheit de-
grees.
CKS yes yes
5 bytes in ASCII format and
“0D” symbol. Returns sensor current ambient
temperature in Kelvins.
DATA
yes yes
5 bytes in ASCII format and
“0D” symbol (see
Table
9
).
Returns sensor readings of scaled
concentration C
1
.
DATAE2 yes yes
5 bytes in hexadecimal format
and “0D” symbol (see Table
10). Returns sensor readings of scaled
concentration C
1
, two status
bytes and CRC value.