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TELEDYNE INSTRUMENTS
460L Instruction Manual Serial Communications
05228 Rev B 39
DCN 5164 PRINTED DOCUMENTS ARE UNCONTROLLED
7.3.11. VSET
SYNTAX
<address>VSET:<var_index>,<new_value><CR>
DESCRIPTION
Sets value of an internal configuration variable (VAR.)
DATA PARAMETERS SENT
var_index index number for internal VAR (See VGET for index list)
new_value new value for VAR.
RESPONSE
<address>:<var_value>#<checksum><CR>
Table 7-3 VAR_INDEX List for VSET Command
var_index Name Description Allowable Range
0
ANALOG_RANGE
Sets the full-scale concentration range for
Analog Output scaling
1 ppb – 1000 ppb
0.001 ppm – 1.000 ppm
1
ALARM_ENABLE Enables or disables the Concentration alarms
0 = disabled
1 = enabled
2
ALARM_MODE
Selects latching mode or non-latching mode for
both alarms.
0 = latching
1 =non-latching
3
CARRIER_WEIGHT
Sets the molecular weight of carrier gas for
wt% calculations (e.g. 32.0 = O2)
27.0 – 32.0
4
COMM_MODE Not Used N/A
5
IIR_FILT
Sets the sensitivity of the software filter used
by the monitor to reduce noise and hysteresis
in the reported O
3
concentration reading.
0.05 – 1.0
6
CONC_UNITS O
3
concentration measurement units
2 =ppb
3 = ppm
7
HI_AL_LEVEL Sets the trigger limit of the HI alarm
10 ppb < x < 1000 ppb
0.010 ppm < x < 1.000 ppm
8
HIHI_AL_LEVEL Sets the trigger limit of the HI-HI alarm
10 ppb < x < 1000 ppb
0.010 ppm < x < 1.000 ppm
NOTE: Only one yar_index is allowed per iteration of the VSET command
EXAMPLE1
Command:
1VSET:8,275.0<CR> - Set HI-HI concentration alarm to 275.0 ppb
Response:
1:OK#261<CR> - VSET Successful
1:FAIL#391<CR> - VSET Failed