Doc# E107706 10- 2
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
10: Meter with Internal Modem Option
10.3: Dial-In Function
The modem continuously monitors the telephone line to detect an incoming call.
When an incoming call is detected, the modem waits a pre-programmed number of
rings and then answers the call. The modem can be programmed to check passwords
and lock-out a user after unsuccessful attempts to connect.
When an incoming call is successfully connected, the control of communication passes
to the calling software program. The modem respond to computer demands to down-
load data or perform other actions authorized by the meter's passwords.
10.4: Dial-Out Function
The Dial-Out Function enabled by the INP2 Option allows the meter to automatically
report certain conditions without direct user oversight. The modem normally polls the
meter to determine if any abnormal or reportable conditions exist, such as those in
the following list. If such conditions are found, the modem checks meter conditions
and events, which have been programmed through Communicator EXT
TM
, to deter-
mine if a call should be placed.
• Are any meter set-point limits exceeded?
• Has the status of the High-Speed Inputs changed?
• Has a waveform been recorded?
• Has a power quality event been recorded?
• Has a control output changed?
• Is either history log approaching a full condition?
• Is the event log approaching a full condition?
• Is any other log approaching a full condition?
• Has the Modem Password failed?
• Has communication with the Nexus® meter failed?
If any of the monitored events exist, the modem automatically initiates a call to a
specified location to make a report or perform some other function. For log full condi-
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