Mipex MIPEX-04, Руководство пользователя, Страница: 26 / 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 26 of 41
THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.
APPENDIX C. SENSOR COMMUNICATION PROTOCOL
Current manual describes firmware release 11.9. Sensor communication protocol is based
on UART interface.
Appendix C.1. General information
Data exchange with MIPEX-04 sensors is performed via UART interface:

Sensor has symbol rate of 57600 bauds.

Data format: 8-bit message, 1 stop bit, no parity checking.

Electrical parameters of UART-transceiver are pointed in section 6.3.
General command format:

any command stated in this UM as <X>, where X stands for a command text consisted
of any number of characters, must be read and/or sent without the symbols “<” and “>”;

ASCII code for commands and responses;

command ends with
carriage return symbol (hexadecimal: “0x0D”);

words and/or values in a response on most commands are separated by space symbol
(hexadecimal: “0x20”) or in some cases by tabulation (hex: “0x09”);

all symbols in command must be sent as one word without delays;

sensor does not respond to incorrectly sent commands;

sensor has two operating modes (access levels)
: “OEM” and “USER”; “OEM” has
extended command set for developers, while “USER” mode is used for field operations.