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DH1 BASE UNIT / DH2 WIRELESS GATEWAY
USER GUIDE
23.
RF REFRESH TIME TAG(S)
Adding a RF Refresh Time tag to any Modbus point ensures the data that is
held in the Modbus table is valid. When the RF Refresh tag is used for
trending, a normal graph will look like a sawtooth.
Since there are no RSSI tags available between Gateway to Gateway,
adding a RF refresh time tag to any of the shared points (peer-to-peer) can
be very valuable.
1.
Double-click on Gateway in project tree
2.
Click on Modbus tab
3.
Select a point, right-click on it and select “add refresh time”
4.
Save project file and update impacted devices for changed to take
into effect
5.
Poll Modbus register to verify refresh count
a.
Refresh count moves in 1 second increments.
i.
If tx interval is 60 seconds, the RF refresh count will jump in
increments of 60
Controlled Copy