41
Reference Manual
00809-0200-4410, Rev BA
Section 5: Host Integration
February 2014
Host Integration
Table 5-1. Device parameters available
PV, SV, TV, and QV (dynamic variables) will vary by device type. Please refer to the device’s
documentation for more information on what value is represented by each dynamic variable.
RELIABILITY and ONLINE relate to wireless communications. RELIABILITY is the percentage of
messages received from the wireless field device. ONLINE is a true/false indication of whether
the device is communicating on the wireless network.
**_HEALTHY parameters are a true/false indication of the health of a particular variable (** =
dynamic variable – PV, SV, etc…). These parameters incorporate critical diagnostics from the
wireless field device as well as communication status.
Note
The **_HEALTHY parameters are a great indication of the health and communications status of
the data values.
State (state value):
The value of a data point which drives a Modbus output of 1. For example, if
a data point is reported as either True or False, a state value of True will report a 1 for True and 0
for False. A state of False will report a 0 for True and a 1 for False. State is only required for
register numbers 0-19999 (Boolean, bit, coil, binary, etc…).
Invert:
This check box will invert the Modbus output from a 1 to a 0 or a 0 to a 1. Invert is only
used for Boolean values using register numbers 0-19999.
Gain:
This value is multiplied to the data value for the purpose of scaling integers. Gain is only
required if scaled is chosen on the Modbus communications page and globe gain and offset is
not chosen.
Offset:
This value is added to the data value for the purpose of scaling integers. Offset is only
required if scaled is chosen on the Modbus communications page and globe gain and offset is
not chosen.
Parameter
Description
Data type
PV
Primary Variable
32 bit float
SV
Secondary Variable
32 bit float
TV
Tertiary Variable
32 bit float
QV
Quaternary Variable
32 bit float
RELIABILITY
A measure of connectivity to the
Gateway
32 bit float
ONLINE
Wireless communications status
Boolean
PV_HEALTHY
Health status for PV
Boolean
SV_HEALTHY
Health status for SV
Boolean
TV_HEALTHY
Health status for TV
Boolean
QV_HEALTHY
Health status for QV
Boolean
