FT Technologies acures FT722 - HT.3: Set or Query Limit Heater Settings

Section 6 Parameter Settings
74 FT722 & FT742 (RS485) – FF & PM Sensors – User Manual
6.4.17 HT.3: Set or Query Limit Heater Settings
Command
Parameter
HT (current and under-voltage limit)
Command
Syntax
SET Sensor:
$<listenerID>,HTL<CurrentLimit>,<UVoltLimit>*<check
sum><cr><lf>
$aa,HTLxx,xx*hh<cr><lf>
QUERY Sensor:
$<listenerID>,HT?L*<checksum><cr><lf>
$aa,HT?L*hh<cr><lf>
Sensor output:
$<talkerID>,HT=<CurrentLimit>,<UVoltLimit>*<checksu
m> <cr><lf>
$aa,HT=x.x,xx*hh<cr><lf>
Parameters
<CurrentLimit>
01 to 60
Heater Current Limit in steps of 100mA. Valid values of the current
limit are in the range 01 to 60. That is, 100mA to 6.0A.
(Factory default is 40 = 4.0 Amps.)
<UVoltLimit>
11 to 17
Heater Under Voltage Limit in Volts. If the supply voltage falls below
the under voltage limit, the heater will be turned off, until the supply
returns above the limit. The factory default setting is 11VDC.
Examples
Example 4
Set the sensor heater current limit to 3.3A and set the under voltage limit to 12VDC. Verify
that the command has been accepted.
Message
Comment
$01,HTL33,12*//<cr><lf>
Set current and voltage Limit
$01,HT?L*//<cr><lf>
Query heater settings
$WI,HT=3.3,12*12<cr><lf>
Sensor response
Description
The HT command may be used to set the sensor heater parameters such as the maximum
current and under voltage limit of the heaters.