Emerson Process Management ControlWave XFC - Manual (Page 118)

F-16 / Appendix F CI-ControlWave XFC
message is not detected, the radio is deactivated. If a message is detected, the radio is left
activated until it responds, after which it remains ON for another listen time interval. If no
more valid messages are detected, the radio returns to 'sense' mode. This mode allows the
system to use as little energy as possible to detect traffic throughout the day. Energy usage
depends on the activation time and activation rate (INTERVAL). Assuming a 1 watt radio
then a 200 millisecond listening period every 5 seconds is equivalent to .04 watts. Users can
configure the Interval and Rate (Listening period) to suit their energy needs. Radio Sensing
occurs between the START HOUR and END HOUR specified by the operator.
Figure F-11 – Radio and Modem Control Configuration Web Page