Rockwell Automation 9307 FactoryTalk EnergyMetrix - Manual (Page 307)

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307
 For pass-thru devices such as Remote I/O power monitors, other applications may
be reading data from the parent device. It may be necessary adjust the update rates
of the competing applications so that the device may respond adequately to all of
them.
 For systems with many devices, meters and/or tags, meter tag logging rates may
be set too low to complete the logging task in the time allotted. In most cases, it is
not necessary to log more frequently that the utility demand interval.
 For systems that utilize a wide area network or modem communication, the
additional communication time may cause missed data.
 In rare cases it may be necessary to select Enable automatic data repopulation and
de-select Enable real-time logging to improve system performance.
 Q: Some data is missing from a Wireless PowerMonitor W250 meter. What should I
check?
A: Missing data records is an indication of poor communication. There are a number
of possible causes.
 Communication to the PC Receiver is via a Digi-One SP serial to Ethernet
converter RealPort virtual COM port, and more than one computer is attempting
to use the SP converter. The SP will support multiple connections, however, there
will be messaging conflicts between the COM ports resulting in lost data. Use a
Digi-One IA set up as an Industrial Automation server with Modbus slave
protocol.
 The wireless mesh network design is not robust, is experiencing RF interference
or poor signal strength, or devices in the RF signal chain have lost power or failed.
Troubleshoot the RF mesh network by using the PC Receiver Setup page, which is
linked from each Wireless PowerMonitor W250 device setup page.
The Device Status display provides a color-coded summary of the communication
status of all devices in a group or domain at a glance.