WirelessHART Fieldgate SWG70
Engineering
E Hauser
91
Application example
The WirelessHART network consists of a Fieldgate, 4 adapters and 4 measuring devices.
HART descriptors for HART field devices:
• LT101@A1
• PT101@A2
• FT101@A3
• TT101@B0
HART descriptors for adapters:
• ADAPTER1@B1
• ADAPTER2@B2
• ADAPTER3@B3
• ADAPTER4@C0
10.5.3 Burst commands for cyclic data exchange
In the case of WirelessHART, the variables from field devices and WirelessHART Adapters
are transmitted to the Fieldgate by burst commands. You must configure the burst
commands accordingly.
Use the DTM or DD of the corresponding WirelessHART device and flag the following burst
commands:
• Command 9: Read Device Variables with Status
• Command 48: Read Additional Status
As an alternative to command 9, you can flag command 3 "Read All Dynamic Variables and
Loop Current" or command 33 "Read Device Variables".
The following variables are available with HART commands 3, 9, 33 and 48:
As an alternative to command 9, you can flag command 3 "Read All Dynamic Variables and
Loop Current" or command 33 "Read Device Variables".
Bit ".NoDataBurstConfigured" in "DeviceStatus_Struct" means that neither command 3, 9 nor
command 33 has been flagged. Bit ".NoDataBurstConfigured" in "DeviceStatus_Struct" means
that command 48 has not been flagged.
See Section "Data block of the WirelessHART Fieldgate" on page 97. See Section "Data block
of the HART devices" on page 99.
NOTICE!
• You can check the burst commands of all the HART devices in the WirelessHART
network in the Fieldgate Web server or in the DTM as follows: Diagnostics > Wireless
Communication > Burst Lists. See Chapter 9.2.3 "Burst Lists" on page 58.
Cyclic data variables
In the HART command
3
9
33
48
PV, SV, TV, QV
x
x
x
PV Status, SV Status, TV Status, QV Status
x
PV Unit, SV Unit, TV Unit, QV Unit
x
x
x
Additional Device Status Information
x
