Serial Commands; Service Code; Aspoll - TSI Instruments DUSTTRAK 8520 Application Note

Baud Rate:
Data Bits:
Stop Bits:
Hardware Control:

Serial Commands

Command
(Upper Returned
Case) Value Description
Returns a seven character string corresponding to any service conditions which may be
ASRVCK sssssss
present. See below for detailed description.
Returns the seven character string displayed on the D

ASPOLL

±vvv.vvv
digits and a decimal point followed by three more digits)
Returns a reading every xx seconds averaged over that time interval, where xx can range
from 01 seconds to 60 seconds. The seven character string is in mg/m
ASDATAxx ±vvv.vvv as "ASPOLL").
NOTE: THE ASDATA FUNCTION DOES NOT WORK PROPERLY FOR D
MONITORS WITH FIRMWARE REVISIONS BELOW v1.9.
AQDATA none Terminates the "ASDATAxx" output stream.
ASRVCK
™
The D T monitor can be polled for any service conditions which may be present using the
UST RAK
command "ASRVCK". This command can be issued to the D
condition which may be present during startup, as well as any time during normal operation. The
™
D T monitor will return a seven character string which corresponds to the seven service
UST RAK
conditions which may arise. For example a returned string of "0000000" corresponds to no service
conditions (normal operation), a string of "0000001" corresponds to a service condition 1, while a string of
"7000300" corresponds to a service condition 7 and a service condition 3. The returned string may
contain any combination of the seven service codes when they are present.
Service
Code Service Code Description
1 Memory has been cleared due to temporary loss of power from internal backup battery.
2 Calibration memory error. Internal calibration data corrupted.
3 Backup battery low.
4 The sample inlet nozzle is due for cleaning.
5 Internal filters are due for replacement.
6 The internal pump is failing or has failed.
7 Laser failure.
ASPOLL
™
The D T monitor can be polled for the current aerosol concentration, averaged over the time
UST RAK
constant being used by the D
character string (three digits, a decimal point and three more digits) represents the average mass sum in
3
mg/m . If the average mass is negative, then the seven character string will be preceded by a minus sign.
1200
8
1
None
™
T monitor, with the command "ASPOLL". The returned seven
UST RAK
-2-
™
T LCD in mg/m
UST RAK
™
T monitor to clear any service
UST RAK
3
. (three
3
(format is the same
™
T
UST RAK