Conversely, the bottom most table displays all of the communications statistics for traffic that has taken place with this device but was originated by other devices. If more than one box is checked, then the selection is treated as a logical AND condition. Note that in general, the number of Commands, ACKs and Replies should be equal on a well-behaved network. The Network Event Log provides supplemental information regarding how often a particular device is not responding or is a long responder. Tokens are passed in an orderly fashion from lowest ID to highest ID with the potential for a single Solicit per complete Token Rotation in order to pick up any additional devices on the network. All of this information can also be exported to a “.

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It is possible to save both session and capture file statistics by saving the capture file to another name and then recreating the statistics from the File Menu.

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Due to the timing of the capture being started and stopped, single digit number differences may occur but any differences of 10 or more indicate a loss of communications between the devices in question. The supported frame types include:.

If more than one 178-u2dhp is checked, then the selection is treated as a logical AND condition.

This display will detail all traffic to or from the device in question. Privacy Policy Terms of Use.

These can be used to determine worst case device performance. You can also order NetDecoder online. You will notice that in the example below, Device appeared on the network and then took more than 5 seconds, but less than 60 to respond to commands sent to it.

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It is also likely that one of the two devices in question will have either a yellow, red, or blue box on the grid or a red triangle in the upper right corner of their box indicating a problem with that device.

If you recreate the statistics from the File Menu, your original session statistics will be overwritten to reflect only the data captured to the disk file.

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Frontline Industrial Network 1784-u2shp. An indication that this has occurred is readily available on the Active Devices Grid, by way of the blue triangle in the device ID box for device The default setting is to capture all traffic.

Statistics files are named using the same name as your capture file and a file extension of “.

This type of filtering eliminates capturing unnecessary frames and allows the user to quickly pin-point the source of the network problem. Note that in general, the number of Commands, ACKs and Replies should be equal on a well-behaved network.

Early detecting and intervention will prevent small problems from escalating into huge network downtimes. You must have firmware version 1. Tokens are passed in an orderly fashion from lowest ID to highest ID with the potential for a single Solicit per complete Token Rotation in order to pick up any additional devices on the network.

This log stores the most recent events and can be easily overrun by devices being powered down if the logic is not written to consider this fact. Individual device statistics can be obtained by clicking on the device number box in the grid, for the device of interest.

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The top-most table displays all of the communications statistics for traffic that has originated from the device of interest. All of this information can also be exported to a “.

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Teledyne LeCroy All Rights reserved. Select OK to accept the values and close the dialog or Cancel to disregard the settings and close the dialog.

Keep in mind that if a capture file is set to wrap, the original statistics are calculated over the entire capture session as opposed to merely representing what has been captured to disk.

This could be an indication that Device 21 is overloaded or is starting to fail. The Network Event Log provides supplemental information regarding how often a particular device is not responding or is a long responder. This information provides additional details about the health of your network. The device IDs are octal numbers running from a value of to octal.

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Conversely, the bottom most table displays all of the communications statistics for traffic that has taken place with this device but was originated by other devices. The additional screens are used in 7184-u2dhp to drill down deeper into the individual device and conversation statistics. However, Frontline no longer sells the DL The information provided in the statistical analysis module can be used to survey and benchmark existing networks, assist in the commissioning of new networks or network expansions, and diagnose intermittent device communications.

Large percentages of network bandwidth can be absorbed by messages and retries directed at devices that are no longer on the network. Notice that response times are displayed here as well.