Rockwell Automation 1425 PowerMonitor Wireless 250 - Manual (Page 59)

Rockwell Automation Publication 1425-UM001A-EN-P - January 2012 59
Glossary
The following terms and abbreviations are used throughout this manual. For
definitions of terms not listed here, refer to the Allen-Bradley Industrial
Automation Glossary, publication
AG-7.1 .
RTC Real Time Clock
UTC Coordinated Universal Time. Number of seconds passed since 1.1.1970
PC Receiver Gateway device that controls the RF network and provides a serial interface for
the customer
Router RF router/repeater
End Node RF communication module integrated in the PowerMonitor W250
Hop Count Number of network node hops taken by a packet delivered from a node to the PC
Receiver
For example: End Node - PC Receiver = 1 hop,
End Node - Router - PC Receiver = 2 hops
(each additional Router will add another hop).
Modbus RTU Serial communication protocol used by the PC Receiver
SELV Safety Extra Low Voltage