User Guide

5756
value through the serial interface.
If the reading is out of range, ERR`
is sent instead of the TDS value.
Na? causes the meter to send the NaCl
value through the serial interface.
If the reading is out of range,
ERR1 is sent instead of the NaCl
value.
Ft1? causes the meter to send the Fert
1st value through the serial inter-
face. If the reading is out of range,
ERR1 is sent instead of the Fert
value.
Ft2? causes the meter to send the Fert
2nd value through the serial inter-
face. If the reading is out of range,
ERR1 is sent instead of the Fert
value.
TPC? causes the meter to send the °C
temperature value through the se-
rial interface. If the reading is out
of range, ERR1 is sent instead of
the temperature value.
TC? causes the meter to send the tem-
perature coefficient value.
TF? causes the meter to send the TDS
Factor value.
KC? causes the meter to send the con-
ductivity calibration coefficient
value.
KT? causes the meter to send the TDS
calibration factor value.
KF1? causes the meter to send the
Fertilizer 1st buffer calibration fac-
tor value.
KF2? causes the meter to send the Fer-
tilizer 2nd buffer calibration factor
value.
KN? causes the meter to send the NaCl
calibration factor value.
Command Types
To send a command to the pH 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 '^PPHR^M' sets
the range to pH.
Commands not requiring an answer from
the pH meter
CONMselects conductivity measurement
TDSM selects TDS measurement
NaM selects NaCl measurement
Ft1M selects Fert 1st buffer measurement
Ft2M selects Fert 2nd buffer measurement
CAL same as pressing the CAL key
CON same as pressing the CON key
ENT same as pressing the ENTER key
PGM same as pressing the PGM key
CLR same as pressing the Clear key
TPC same as pressing the C key
TPF same as the F key
TCK same as the %TC key
TKF same as the Factor key
Commands requiring an answer
CON? causes the meter to send the
conduc- tivity value through the
serial interface. If the reading is
out of range, ERR1 is sent in-
stead of the conductivity value.
TDS? causes the meter to send the TDS