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Siemens Building Technologies SED2 LON Module Operating Instructions CE1B5193en
HVAC Products 2 LON module overview 26.06.2006
2.4 Network Variables for Object 0 (node object)
Network
Variable
Input or
output
Units of
measurement
Description
nviRequest Input Object request
nvoStatus Output Object status
2.5 Network Variable Inputs (nvi) for object 1
Index Network Vari-
able Input (nvi)
Units of
Measurement
Description
nv2– nviDrvSpeedStpt On/off switch and
speed setpoint
(0...100 %)
Value (0…100%)
State (0…1)
Drive speed setpoint; the speed setpoint
value is fed into the drive register
r2050[1]
nv4 nviDrvSpeedScale Percent
(0 to 100 %)
Drive speed setpoint scaling
nv10 nviHiPress Pressure
(-32768 Pa to
32766 Pa, Res: 1 Pa)
* Feedback signal for high pressure
LON sensor, which is fed into the
drive register r2050[2]
nv11 nviLoPress Pressure
(-32768 Pa to
32766 Pa, Res: 1 Pa)
* Feedback signal for precise low pres-
sure LON sensor, which is fed into the
drive register r2050[2]
nv12 nviTemp Temperature
in ° C
* Feedback signal for temperature
LON sensor, which is fed into the
drive register r2050[2]
nv13 nviCO2 ppm * Feedback signal for CO2 LON sensor,
which is fed into the drive register
r2050[2]
nv14 nviIAQ Percent
(0-100 %)
* Feedback signal for IAQ LON sensor,
which is fed into the drive register
r2050[2]
nv15 nviStptHiPress Pressure
(-3276.8 kPa to
3276.7 kPa)
* Setpoint signal for high pressure,
which is fed into the drive register
r2050[3]
nv16 nviStptLoPress Pressure
(-32768 Pa to
32766 Pa, Res: 1 Pa)
* Setpoint signal for precise low pres-
sure, which is fed into the drive regis-
ter r2050[3]
nv17 nviStptTemp Temperature
in ° C
* Setpoint signal for temperature, which
is fed into the drive register r2050[3]
nv18 nviStptCO2 Ppm * Setpoint signal for CO2, which is fed
into the drive register r2050[3]
nv19 nviStptIAQ Percent
(0-100 %)
* Setpoint signal for IAQ, which is fed
into the drive register r2050[3]
nv36 nviFaultReset On/off switch Drive fault reset
Value or State ≠ 0 = reset
* Only one of these signals may be bound at any time