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wiki:ewthresh
Last modified 18 months ago Last modified on 03/25/12 13:48:12

# Earthworm Module: ewthresh

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## Function

Monitors a ring for TRACEBUF2X messages and generates an alarm message when a SCNL-specific threshold is exceeded.

## Details

The ewthresh module monitors a ring for TRACEBUF2X messages. If a message's maximum (converted) value exceeds the threshold specified for that message's SCNL, an alarm message is written to the output ring identifying the SCNL, threshold, time, and maximum (converted) value.

The primary option is what SCNLs to monitor and what threshold to use for it.

### Example Configuration File

    #
    #         ewthresh Configuration File
    #
     MyModuleId     MOD_EWTHRESH     # module id for this program
     InRing         TEST_RING           # transport ring to use for input
     OutRing        HYPO_RING           # transport ring to use for output
     HeartBeatInt   30                  # EW internal heartbeat interval (sec)
     LogFile        1                   # If 0, don't write logfile; if 1, do
                                        # if 2, write to module log but not to
                                        # stderr/stdout
     MaxMsgSize     4096          # maximum size (bytes) for input/output msgs

     Threshold 0202 BHZ QT TT 749.0     # SCNL to monitor & threshold to look for

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