GT-521S Manual Rev D
Page 24
7.2.
Commands
GT-521S provides serial commands for accessing stored data and settings. They are
not case sensitive and are terminated by a carriage return. These commands are all
available via the USB, RS-232 and RS-485 hardware interfaces. The serial settings
(baud rate, parity and stop bits) in the counter must match the serial settings in the
computer for proper communication regardless of the hardware interface type.
The following table lists the available commands:
Settings (must match computer settings):
Baud Rate = 9600 (default, see Section 5.8.2 to change this)
Parity = None
Stop Bits = 1
Command
Description
?,H
Displays the help menu
1
Returns the unit
’s settings information
2
Returns all available records from the data file
3
Returns all records since last ‘2’ or ‘3’ command.
4 n
Returns the last n records. If n is omitted this returns the last record.
D
Date (mm/dd/yy) Set Date
T
Time (hh:MM:ss) Set Time
C
Clear data
S
Start a sample
E
End a sample
ST
Sample Time
RV
Show software revision.
ID
Set/Get the Location ID. Range 1-999.
FAx
Alarm Limit setting where x=1 or 2 for Alarm 1 or 2.
SE
Serial Mode (0=RS-232, 1=RS-485)
SF
Alarms on/off where 0=Off, 1=On
SH
Set Hold Time in seconds
SN
Set Number of Samples (0=Repeat, 1=Single, 2-999=N samples)
SR
Set Report Mode (0=NONE, 1=CSV, 2=Printer)
SS
Read serial number
CU
Count Units (0=CF, 1=/L, 2=TC, 3=M3)
TU
Temperature Units (0=C, 1=F)
RZ
Returns Channel Size information.
DT
Sets Date/Time without user interaction (mm-dd-yy hh:MM:ss)
OP
Operational Status. S=Stop, R=Running, H=Hold.
CS
Set Channel Sizes (2 Channel Sizes) CS sz1 sz2
CM
Set Count Mode 0=Normal, 1=Difference
7.3.
Real Time Output
The real time output occurs when the unit finishes a sample. The output format is either
a comma separated value (CSV) or a printer style depending on the Report Type setting
(see section 5.8.1).
