Spellman SL Series - 1. The eSL Digital Interface; 1.1. Ethernet; 1.2. Network Settings; 1.3. Reset Ethernet Port Settings to Factory Configuration

118158‐001REV.A 5OF20
1. TheeSLDigitalInterface
1.1. Ethernet

TheeSLsupportsEthernetcommunicationsonly.EachEthernetcommandwillconsistofa
TCP/IPheaderfollowedbytherequireddatabytes.FigurebelowsummarizestheTCP/IP
headerconfiguration.Pleasenotethatthisfunctionalityisprovidedbythesoftware
implementationoftheOpenSystemsInterconnection(OSI)TCP/IPprotocolstack,
specificallytheupper4layers.
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
Byte
0 Protocol
Version
Header
Length
Typeof
Service
TotalLength
4 PacketID

Flags FragmentationOffset
8 TimeToLive

Protocol Headerchecksum
12 SourceAddress

16 DestinationAddress

20 SourcePort

DestinationPort

24 SequenceNumber

28 AcknowledgementNumber

32 Data
Offset
Reserved Code
Bits

Window
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36 Checksum

UrgentPointer

40 DataByte1
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DataByte2 DataByte3 DataByteN
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