Wirelesshart Data Access And Statistics; Wirelesshart Data Access - Emerson IEC 62591 Instruction Manual

3.5 WirelessHART Data Access and Statistics

3.5.1 WirelessHART Data Access

Revised October-2019
IEC 62591 Wireless Interface Instruction Manual (for ControlWave Micro)
If you only want to replace a device, for example, because it failed and
you want to put an identical device in the same location, there is no need
to decommission the device; simply use the Field Tools' AMS Device
Configurator or a hand held configuration device to specify the same
long tag name, join key, and network ID in the replacement device, then
install the new device normally, and it will join the network in place of
the failed device.
The IEC 62591 Wireless Interface collects both WirelessHART data
and statistics.
The IEC62591 function block is pre-configured to return the Universal
and Common HART parameters including;
▪ Long Tag
▪ User Defined Message
▪ User Defined Descriptor
▪ Extended Device Type
▪ Device ID
▪ Manufacturer ID
▪ Device Serial Number
▪ Adapter Type – THUM's Expanded Device Type
▪ Adapter ID – THUM's Device ID
▪ PV, SV, TV and QV Variable Units
▪ Slot 0, 1, 2 and 3 Variable Units
▪ PV, SV, TV and QV Variable Value
▪ Slot 0, 1, 2 and 3 Variable Value
▪ Primary Variable Loop Current
▪ Device Status
▪ Battery Life (you may want to generate an alarm when this falls
below a certain threshold; see Section 3.2.11 for information on
generating alarms.)
▪ PV Loop current
▪ Burst Rate
The following parameters require the discrete control version of the
application and associated structures:
▪ Number of discrete channels
▪ Set class, Live Class, Set Point, and Live Value for each of up to
four (4) discrete channels
▪ Failsafe mode (hold last value or use failsafe value)
▪ Failsafe value for PV, SV, TV, and QV
▪ PV validity flags – such as NAN (Not a Number)
Configuration and Commissioning 3-19