IP WatchDog monitors function of serial (RS-232) devices using PING, WWW page detection, or serial port data stream. If a preset function was not executed within a specified time period, IP WatchDog will RESET the device (or switch to a back-up communication circuit, set off an alarm etc.) A single WatchDog device can independently monitor up to two devices, such as servers, routers and access or security systems.

The IP WatchDog monitors defined function of remote device on two independent channels (each channel controls just one of two relays). If the remote device drops out, the IP Watchdog activates the relay. This way it is possible to restart the device, shut it down for a specified time or start for example a back-up circuit.

Monitoring of remote device functions:

• Monitored device receives a PING that is sent periodically from IP Watchdog.
• Monitored device sends PING periodically to IP Watchdog's IP address.
• Monitored device works as a WEB server and provides WWW page in periodic intervals on defined URL.
• Monitored device requests periodically WWW page on defined IP address of Watchdog.

Monitoring of local device functions:

• Monitored device sends periodically defined string to RS-232 serial port.

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Monitoring
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