EA-1 User Manual
37
Note:
Some of the commands are specific to the type of sensor being used, for example some commands work only
for energy mode; other commands work only with sensors which have a continuous calibration curve (all photodiodes
and some thermopiles) rather than discrete calibration points (some thermos). Some commands work only with
thermopile or only with photodiode sensors. Details are given with each command.
Disclaimer:
Every effort has been made to list all the parameters, responses and error messages as accurately as
possible for every command. If there are any discrepancies between details listed in this document and between the
actual behavior of the device, the user should pay attention to the actual behavior. Any errors found in this document
should be brought the notice of Ophir R&D staff at this email:
Device Specific Commands:
Version ($VE):
Returns the firmware version of the device
Example:
$VE -> *EA1.06 (when device is running in regular application mode)
$VE -> *ED1.06 (indicates device is running in special “downloader” or boot mode, used for upgrading firmware)
Instrument Information ($ii):
$ii[CR] -> * ETHA <S/N of device> ETHERNET-ADAPTER[CR][LF]
Returns information about the device: a 4 letter code ETHA, the S/N of the device, and the device description
"
ETHERNET-ADAPTER”. Can be used primarily to query the individual S/N of the device itself (as opposed to the S/N
of the sensor that is attached to it).
Example:
$ii-> * ETHA 350002 ETHERNET-ADAPTER[CR][LF]
Note:
The command will work with upper or lower case letters. Using lower case in this document for clarity.
Sensor Information ($hi):
$hi[CR] -> * <2 letter sensor code> <S/N of sensor> <name of sensor> <capability code>[CR][LF]
Returns information on the sensor, including name and S/N.
The 2 letter code is “TH” for thermopile sensors, or “SI” for photodiode sensors. Other types of Ophir sensors have
different 2 letter codes.
The last parameter is an internal code for factory use only.
Example:
$hi -> * TH 345543 30(150)A-LP1 00400003 (thermopile sensor; S/N 345543; name “30(150)A-LP1”)
Note:
The S/N returned is for the attached sensor and not for the device itself. The device S/N can be queried using
the $ii command.
General Commands:
Test communications ("Ping" command, $HP):
This command does nothing to the device but returns a reply “*”. It can be used as a “ping” command to check
communications with the device.
Example:
$HP[CR] -> *[CR] [LF]
Reset ($RE):
Resets the device firmware and forces a disconnection of the communications channel. Using this command is
equivalent to powering the device off and on again. The device acknowledges by replying “*” before performing the
reset.
Note:
When using the USB Virtual COM Port connection, it is recommended that the channel be closed in the support
software immediately after sending this command, otherwise a physical disconnect and reconnect of the cable may
be necessary to restore communications after the device is reset.