Emerson Rosemount 702 Quick Start Manual page 36

Quick Start Guide
Table 5-5:
Mapping
PV SV
1.0 1.0
0.0 1.0 or 0.0
1.0 0.0
NOTICE
It is imperative that both PV and SV be mapped to the host system so the
diagnostic information on the sensor status is captured.
In addition, system considerations must be observed to ensure that the
device is still connected to the wireless network and reporting values. On an
Emerson Smart Wireless Gateway, this can be done by referring to the
parameter: PV_HEALTHY. PV_HEALTHY has a "True" state when the device is
on the network and its updates are current, not late or stale, and the device is
functioning properly. A "False" state of PV_HEALTHY means the device is
either off the network, the data updates are not current, or that there is a
malfunction of the device (such as an electronics failure). In the case of a
"False" state of PV_HEALTHY, it is recommended to assume the device is not
connected to the network and take appropriate action.
Mapping the PV, SV, and PV_HEALTHY variables and parameter
Below is a the Gateway screen where the PV, SV, and PV_HEALTHY variables
and parameter can be mapped.
36
Liquid Hydrocarbon Detection Interface, for Modbus
Description/interpretation
Normal condition, no leak detected, sensor status good
Leak detected, sensor status good
Sensor Not Connected, Assume Leak, take appropriate action
Rosemount 702 Wireless Discrete Transmitter
April 2018