ONICON D-100 LonWorks - Manual (Page 20)

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D-100-LON Network Interface Installation Guide 05/14 - 0658-4 / 18342
Page A-4
INTEGER FORMAT OUTPUT NETWORK VARIABLES
Integer format output variables are limited to 2 bytes of data. For this reason, the maximum number that
can be transmitted in this format is 65,535. Values for both rate and total data will often exceed this limit.
Rate Variables
The integer output network variables for volume rate are described in the table below. Column 1 contains
a brief description of the network variables. Column 2 contains the network variable names. Column 3
contains the Lon SNVTs used for each variable. Column 4 contains the engineering units and column 5,
the valid range for each variable.
Integer Output Network Variables
Description Variable Name SNVT Name Engineering Units Valid Range
Flow (volume) rate nvoVolRateLi
SNVT_flow
Liters/Sec 0 to 65535
Mode status indicator nvoModeStatus SNVT_char_ascii
*Supply temperature nvoSupplyTempi SNVT_temp_p ° C -17.778 to 260.0
*Return temperature nvoReturnTempi SNVT_temp_p ° C -17.778 to 260.0
*Delta temperature nvoDeltaTempi SNVT_temp_diff_p ° C -327.68 to 327.66
*Energy rate nvoEnrRateKWi SNVT_power_kilo KWatts 0 to 65535
* These network variables are present but not used by the standard D-100.
Total Variables
The integer output network variables for total are described in the table below. Column 1 contains a brief description
of the network variables. Column 2 contains the network variable names. Column 3 contains the Lon SNVTs used
for each variable. Column 4 contains the engineering units and column 5, the valid range for each variable.
Please note that while the floating point variable for FLOW total is transmitted in liters, the integer
network variable for FLOW total is transmitted in kLiters. This is done to increase the maximum total
that can be transmitted via the integer variable. Total(s) must be reset before the accumulated value
exceeds 6553.5 kliters using nviResetVol1a and/or nviResetVol2a. If this is not done, nvoVol1KLi and/or
nvoVol2KLi will over range and continue to indicate 6,553.5 kliters (1,731,252 gallons) until the D-100’s
internal total rolls over to zero.
A separate integer SNVT is also available to transmit flow totals in liters. This variable is only used in
special small pipe applications as the maximum total it can accumulate is only 65,535 liters (17,312
gallons) before it must be reset.
Integer Output Network Variables
Description Variable Name SNVT Name Engineering Units Valid Range
* Flow (volume) total -1 nvoVol1Li SNVT_vol Liters 0 to 65535
Flow (volume) total -1 nvoVol1KLi SNVT_vol KLiters 0 to 6553.5
* Flow (volume) total -2 nvoVol2Li SNVT_vol Liters 0 to 65535
Flow (volume) total -2 nvoVol2KLi SNVT_vol KLiters 0 to 6553.5
Energy total -1** nvoKiloBTU1i SNVT_btu_kilo KBtu 0 to 65535
Energy total -1** nvoMegaBTU1i SNVT_btu_mega MBtu 0 to 65535
Energy total -2** nvoKiloBTU2i SNVT_btu_kilo KBtu 0 to 65535
Energy total -2** nvoMegaBTU2i SNVT_btu_mega MBtu 0 to 65535
* Special small pipe volume total variables
** These network variables are present but not used by the standard D-100.