Chapter 10 Network variable bindings
110 CNT-SVP01C-EN
Tracer MP580/581 bindings
The Tracer MP580/581 controller has user-defined application software
developed in the Tracer graphical programming (TGP) editor. The bind-
ings for this controller fall into the following two categories:
• Generic custom bindings
• Bindings associated with the Space Comfort Controller (SCC) or Dis-
charge Air Controller (DAC) profile
Generic custom bindings are made with generic network variable inputs
and outputs. These inputs and outputs are always available on the Tracer
MP580/581. Use network variable inputs and outputs associated with the
SCC and DAC profiles only when their respective profile is active. See
“Configuring an SCC or DAC profile” on page 44 for more information.
The examples in this chapter illustrate some common applications in
which bindings are used with the Tracer MP580/581 controller.
Receiving data
A network variable input (nvi) receives data from other devices on the
Comm5 network. Network variable inputs (including their SNVTs) that
are commonly used in Tracer MP580/581 bindings are shown in the fol-
lowing tables. Generic network variable inputs are shown in Table 8.
Table 9 on page 112 contains the DAC profile network variable inputs,
and the SCC profile network variable inputs are shown in Table 10 on
page 114.
Table 8. Tracer MP580/581 generic network variable inputs
Variable name SNVT Data type Description
nviSwitch01 …
nviSwitch40
SNVT_switch Binary Bind to these 40 network variable inputs to communi-
cate binary values to the device.
nviPPM01 …
nviPPM05
SNVT_ppm Analog Bind to these five network variable inputs to commu-
nicate concentrations in parts-per-million to the
device. The valid range is from 0 ppm to 65535 ppm
with a resolution of 1 ppm.
nviCount01 …
nviCount02
SNVT_count Analog Bind to these two network variable inputs to commu-
nicate unassigned numbers to the device. The valid
range of each variable is from 0 to 65,535 with a reso-
lution of 1.
nivCurrentAmp01 …
nviCurrentAmp05
SNVT_amp Analog Bind to these five network variable inputs to commu-
nicate currents in amperes to the device. The valid
range is from –3,276.8 A to 3,276.8 A with a resolu-
tion of 0.1 A.
nviCurrent_mA01 …
nviCurrent_mA08
SNVT_amp_mil Analog Bind to these eight network variable inputs to com-
municate currents in milliamperes to the device. The
valid range is from –3,276.8 mA to 3,276.8 mA with a
resolution of 0.1 mA.
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