ABB AWIN GW120, User Manual

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APPENDIX WIR ELESS HART NETWOR K STATIS TICS DATA AVAILABLE FOR M ODBUS M APPING
4JNO0 0030 8 A 65
Parameter Register Length Data Type Description
Number of Wire-
lessHART Neigh-
bors
1
Unsigned 8-bit
Integer
Number of neighbors of a device
Appendix A.2 WirelessHART Network Statistics Data
Available for Modbus Mapping
The following data ( Table 18 ) is available from WirelessHART gateway itself related to the
overall network statistics. This data is available for communication over ModbusTCP link.
Parameter
Register
Length
Data Type
Description
Reliability 2 Floating Point
The percentage of data packets generated
by motes (or accepted via send API) that
the manager received.
Stability 2 Floating Point
The ratio of number of acknowledged
packets by the total number of packets
transmitted.
Latency 2 Unsigned 32-bit Integer
The average time required for a data
packet to travel from the originating mote
to the manager.
Packets Lost
Upstream
2 Unsigned 32-bit Integer
Total number of lost upstream packets
across all devices and sessions.
Time 2 Unsigned 32-bit Integer
Current time of the gateway. Seconds since
Epoch according to system’s real-time
clock.
Data Age 1 Unsigned 16-bit Integer
This value is seconds elapsed since last up-
date of network statistics data. Statistics
are averaged over a period of 15 minutes.
Status 1 Unsigned 16-bit Integer
0 – Normal, 2 – WirelessHART queue or
stack is full.
WirelessHART
device count
1 Unsigned 8-bit Integer
Number of native WirelessHART devices
(excluding gateway and wired instruments
[i.e. sub devices]).
Total device
count
1 Unsigned 8-bit Integer
Number of total devices in the network (ex-
cluding gateway but including wired instru-
ments [i.e. sub devices]).
Live device
count
1 Unsigned 8-bit Integer
Number of live devices in the network (ex-
cluding gateway but including wired instru-
ments [i.e. sub devices]).
Table 18: WirelessHART gateway parameters available for Modbus mapping