Serial commands - GMP231

GMP231 User Guide

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User guide

All commands can be issued either in uppercase or lowercase. In the command examples, the keyboard input by the user is in bold.

The notation <cr> refers to pressing the carriage return (ENTER) key on your computer keyboard. Enter a <cr> to clear the command buffer before starting to enter commands.

Table 1. Basic serial commands
Command Description
? Show probe information.
CLOSE Close connection to probe (POLL mode)
ECHO Show or set remote echo mode.
ENV Show or set environmental parameters.
ERRS Show currently active errors.
FORM [modifier string] Show or set output format.
HELP Show list of currently available serial commands.
INTV [0 ... 9999 s/min/h] Set continuous output interval for R command.
OPEN [address] Open connection to probe in POLL mode
PASS [1300] Access advanced serial commands.
R Start the continuous outputting.
RESET Reset the probe.
S Stop the continuous outputting.
SDELAY [0 ... 255] Show or set serial line transmission delay in milliseconds.
SEND Output measurement message once.
SERI [baud data stop parity] Show or set the serial interface settings
SMODE [mode] Show or set startup serial mode: RUN, STOP, or POLL .
SNUM Show probe serial number.
STANDBY [on/off] Standby mode on/off (turn off measurement)
SYSTEM Show probe firmware information
TIME Show probe operation hours and uptime
VERS Show probe firmware version.
Table 2. Advanced serial commands
Command Description
ADDR [0 … 254] Show or set probe address.
AMODE Show or set analog output mode.
AOVER Show or set analog output overrange and clipping behavior.
ASEL Show or set analog output parameter.
ATEST Test analog output.
CCO2 Adjust CO2 measurement gain and offset.
CDATE Show or set calibration date.
CP Adjust pressure measurement offset.
CT Adjust temperature measurement offset.
CTEXT Show or set calibration information.
FRESTORE Restore probe to factory settings.
O2CMODE Show or set oxygen compensation mode.
PCMODE Show or set pressure compensation mode.
RHCMODE Show or set humidity compensation mode.
TCMODE Show or set temperature compensation mode.