The N (Damaging Acknowledge) packet signifies that an error was detected inside a acquired packet. ,
Windows 7 Home Premium
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StartofPacket
DataBlockLength
PacketSequence
PacketType
CheckByte
EndofPacket
StartofPacket (1 byte): Begin Of Header (SOH) packet start off character.
ValueMeaning
0x01
SOH character.
DataBlockLength (one byte): Info block length. For HyperTerminal Kermit,
Office Pro, the maximum info block duration is a hundred bytes.
ValueMeaning
0x23
Packet has no information block.
PacketSequence (1 byte): Packet sequence range.
ValueMeaning
0x20 + packet sequence number
Packet sequence number is employed.
0x20
Packet sequence range is just not used.
PacketType (1 byte): Packet variety.
ValueMeaning
ASCII N
Negative acknowledgement.
CheckByte (1 byte): Checksum byte.
EndofPacket (one byte): Conclude of packet.
ValueMeaning
0x0D
ASCII carriage return (CR) character.