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A system log is located in a nonvolatile memory. All notifications are registered in rounda circle, which means that the oldest notification in a log is rewritten by a new one.
The first time tag in a log is 01.01.70 Mon 00:00: 00.UTC. If an IP address of an NTP server is specified in the settings of a device, a device will try to get a precise time and if successful it will synchronize its internal clock with a precise time. After synchronization of synchronizing time, two records that represent a time jump when resetting the clock to a precise time will time will appear in a log. If the time received while synchronizing with an NTP server is different from the time of the internal clock for less than 5 minutes, the clock is will not be reset. Instead, a pace of internal clock is will be changed in the way to fit a precise time, received from an NTP server in a certain period of time. Thanks to this, there is no time jumps in the list of events in the log, which simplifies its analysis.
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ION=Y XXXX ZZZZ – is recorded in the log when an IO line changes its current logic level (switches from the status «0» into the status «1» and vice versa) at enabled and notifications in the a log from the IO line are enabled. N – is a number of an IO line. Y – is a current logic level of an IO line. XXXX – is a description of an IO line, which is set by a user at the page «INPUT-OUTPUT» of a device web-interface, ZZZZ – is a description of a logic level of an IO line, which is set by a user in the window for of configuring notifications for an IO line.
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SYSLOG server is convenient to use for a centralized collection of notifications about events that take place at numerous devices and computers, which operate in at the network, including NetPing devices.