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ON (all carriage returns are followed by a linefeed (ASCII decimal 10)), and
the duplex to HALF disabling echo.
The serial port can be used to transmit measurements to a computer or printer.
It can also be used to change settings of the 1521 from a computer or interface
with software. A full list of commands follows in Section 8.2.
Commands sent to the 1521 must end with an EOS character which is a car
-
riage return (ASCII decimal 13) or linefeed character (ASCII decimal 10).
Commands can be sent with upper or lower case letters. Data returned from the
1521 ends with a carriage return and a linefeed.
8.2 Communication Command List
8.2.1 Primary Commands
The following group of commands read or set various functions.
Description Command Example
Response
Format
Response
Example Range
Read measurement, 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
Read measurement, simple format f[etch?]
rea[d?]
me[asure?]
fetch?
read?
meas?
t: 999.999
{C,O,F,R,orK}
t: 25.587 C
Read minimum m[inimum] min min: 999.999
{C,O,F,R,orK}
min: -14.653 C
Read maximum ma[ximum] max max: 999.999
{C,O,F,R,orK}
max: 416.781 C
Clear minimum and maximum cl[ear] clear
Read a hold register h[ld]<n> hld6 hld<n>: 999.999 {C, O, F,
R, or K}
hld6: 26.553 C <n> can be 1 to
6