User Guide

35
SENDING COMMANDS FROM PC
With terminal programs such as Telix
®
and
Windows Terminal
®
, it is possible to remotely
control your HI 964400. Use HI 920010 cable
to connect the meter to the PC, start the
terminal program and set the communication
options as follows: 8, N, 1, no flow control.
Command Types
To send a command to the D.O. meter the
scheme is:
<DLE> <
command> <CR>
This line makes the computer send a Data
Link Escape character, the command ex-
pressed as a number or a 3-character se-
quence) and a CR character.
Note: Windows Terminal
®
and all the other
terminal programs that support the
ANSI escape sequence, represent the
DLE character by the string '^P' and
the CR character by the string '^M'.
E.g. the line '^PPPM^M' sets the range
to ppm.
Commands not requiring an answer from
the meter:
PPM sets the range to ppm D.O.
PER sets the range to % D.O.
OFF is equivalent to pressing the OFF key
Commands requiring an answer:
DO? Causes the meter to send the D.O.
(% or ppm will depend on the meter
setting). If the reading is out of range
"Err 1" is sent.
TELIX
®
is registered Trademark of "Deltacomm"
Windows Terminal
®
are registered Trademark of "Microsoft Co."