M to M String Length Limit

Comments

• DHawthorne Junior Member

  November 2006

  I try to keep them short because I like to be able to log them, and the telnet event log has a length limit that is fairly small. I have no idea what the actual M to M limit is, though I am sure it exists.
  
  But they are quite reliable. I don't think you need be concerned about checksums, etc. If the connection exists at all, they go through, and if it doesn't, you get a device error as soon as you attempt a SEND_STRING (or COMMAND).

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• Joe Hebert Junior Member

  November 2006

  TurnipTruck wrote:

  Are there any know limitations in byte length of SEND_STRINGs between masters on the WAN? ...Should I be building in some sort of a checksum/retransmission methodology?

  I believe there is about a 2000 byte limit (give or take a few bytes) for a SEND_STRING. AFAIK, it's not a master to master limitation, it's just a SEND_STRING limitation. The SEND_COMMAND limit is much lower, I think it's somewhere around 200 bytes. And I agree with Dave, no need for a checksum.

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• B_Clements Senior Member

  November 2006

  The limit is the payload of an Ethernet packet. This was covered once in another thread. As Joe said, about 2000 bytes.

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