The protocol for serial communications is 8 data bits, 1 stop bit, and no parity.

Use no flowcontrol. The baud rate is fixed at 2400, the linefeed to ON (all car-

riage returnsare followed by a linefeed (ASCII decimal 10)), and the duplex to

HALF disabling echo.

The serialport can be used to transmit measurements to a computer or printer.

It can also be used to change settingsof the instrumentfrom a computer or in-

terfacew ith software. A full list of commands follows in Section 8.2.

Commands sentto the instrument must end with an EOS character which is a

carriage return (ASCII decimal 13) or linefeed character (ASCII decimal 10).

Commands can be sent with upper or lowercase letters. Data returned from the

instrument ends with a carriage return and a linefeed.

8.2 Communication Command List

8.2.1 Primary Commands

The followinggroup of commands read or set various functions.

Description Command Example
Response
Format
Response
Example Range
Readmeasurement, extended
format
t[emperature] t t: 999.999
{C,O,F,R,orK}
mm-dd-yyyy
hh:mm:ss
t: 125.745 C
03-01-1999
15:49:15
Readmeasurement, simple
format
f[etch?]
rea[d?]
me[asure?]
fetch?
read?
meas?
t:999.999
{C,O,F,R,orK}
t:25.587 C
Readminimum m[inimum] min min:999.999
{C,O,F,R,orK}
min:-14.653 C
Readmaximum ma[ximum] max max:999.999
{C,O,F,R,orK}
max:416.781 C
Clearminimum and maximum cl[ear] clear
Readdata labels
Note:This command also
setsthe autolog label.
lbnn lb01 lb99:xxxxxxxx Lb01: BATH
Setdata labels lbnn=[nnnnnnnn] lb01=ENG 0to 9, A to Z,
-, _, .
Initiatedownload of demand
loggeddata
ddem ddem
Cleardemand logged data dclr dclr
Readthe number of demand
loggedreadings currently in
memory
dlog dl dl: 999 dl:51
Readnumber of readings in
autologmemory
alog alog log:9999 log:10
1522 Handheld Thermometer Readout
User’s Guide
48