Spellman SL Series - 1.4.1. Messages sent from Host to the eSL Unit

118158‐001REV.A 7OF20
1.3. ResetEthernetPortSettingstoFactoryConfiguration

TheEthernetportinsidetheeSLunitcanbesetbacktoitsdefaultfactoryconfiguration.
ThisisusefulwhentheeSLhasproblemsestablishingcommunicationsandcurrentnetwork
settingsareunknown.
WiththeeSLpowerturnedoff,findJP1jumperheaderlocatedonthebackofESLfront
panel.PlaceajumperacrossJP1twopinsandturnpoweron.UsingyourpreferredInternet
browser,enterdefaultIPaddress192.168.10.61onsearchbox.Loginscreenshould
appear.Entersamecredentialsasshownabove.Thenetworksettingsscreenshould
appear.Youcanchangenetworksettingsasdesirednow.
Turnpoweroffandremovethejumper.Turntheunitbackon.TheeSLshouldestablish
communicationsusingthesettingsyouentered.

1.4. MessagesDataFormat
1.4.1. MessagessentfromHosttotheeSLUnit
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Messagesarealwaystransmittedfromthehosttotheunit.Thehostwaitsfortheunit
toreplybeforesendingnextmessage.Theunitneverinitiatesamessagetransfer.
ThemessagesentbythehostisastringofASCIIcharacters.Amessagemayormaynot
containdata.Seetablebelow.

Hostsendsmessagecontainingdatato
unit
STXCMD,DATA,..,DATA,ETX
Hostsendsmessagecontainingnodata
tounit
STXCMD,ETX

Where:
STX  ASCII0x02Startofmessage
CMD 2numericASCIIcharactersrepresentingthecommandID.See
commandsbelow.
, ASCII0x2Ccharacter
DATA OneormoredatastringsinASCIIformatandseparatedbycommas

ETX ASCII0x03Endofmessage