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TELEDYNE INSTRUMENTS
460L Instruction Manual Serial Communications
05228 Rev B 37
DCN 5164 PRINTED DOCUMENTS ARE UNCONTROLLED
7.3.9. VGET
SYNTAX
<address>VGET:<var_index><CR>
DESCRIPTION
Returns value of an internal configuration variable (VAR.)
DATA PARAMETERS SENT
var_index is index number for internal VAR as follows:
Table 7-2 VAR_INDEX List for VGET Command
var_index Name Description
0
ANALOG_RANGE Full-Scale concentration range for Analog Output scaling
1
ALARM_ENABLE
0 = disabled
1 = enabled
2
ALARM_MODE
0 = latching
1 =non-latching
3
CARRIER_WEIGHT
Molecular weight of carrier gas(e.g. 32.0 = O2). Only used by
460L’s with ppmw capability
4
COMM_MODE Not Used
5
IIR_FILT
The sensitivity of the software filter used by the monitor to reduce
noise and hysteresis in the reported O
3
concentration reading.
6
CONC_UNITS
2 =ppb
3 = ppm
7
HI_ALARM_LEVEL Sets the trigger limit of the HI alarm
8
HI-HI_ALARM_LEVEL Sets the trigger limit of the HI-HI alarm
NOTE: Only one yar_index is allowed per iteration of the VGET command
RESPONSE
<address>:<var_value>#<checksum><CR>
EXAMPLE
Command:
1VGET:8<CR> - Request limit value for HI concentration Alarm
Response:
1:300.0#348<CR> - HI alarm limit is 300.0 ppb
NOTE
Response is in units of measure for which the monitor is set.