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Unsolicited Pakbus Packets on Multi-drop Radio


scotto1973 Aug 17, 2014 05:53 PM

I have aproximately 80 CR1000s on a multi-drop radio that I'm using modbus to retrieve realtime data from. Additionally I want to have the option to pull logs over pakbus (not to mention the ability to remotely debug issues using loggernet).

What I have observed is that some of the devices on the network are sending un-solicited pakbus between them.

I've begun going through and making sure beacons are turned off on the serial port. Thus far I haven't found the beacon to be on (value for period is 0) for the devices that the pakbus protocol message is identifying

Is there anything else I need to do/verify to disable each device from sending unsolicited pakbus? Some of these are legacy devices - wondering if they've been configured to do something on an periodic basis.

In any case over a multi-drop serial network it tends to be disruptive.

Example messages (message follows RX: )

>COM3 28 23:02:29.580 0/2 L 8 RX BD A0 21 00 2F 0C 60 BD
>COM3 28 23:02:40.106 0/2 L 8 RX BD 90 1C 00 02 6F 65 BD
>COM3 28 23:02:52.860 0/2 L 8 RX BD 90 1C 00 24 2B 43 BD
>COM3 28 23:02:57.694 0/2 L 18 RX BD A0 05 70 21 00 05 00 ... BF 00 02 FF FF 5E AA BD


Thank you.

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