Datasheet

9/29/2015 ETH0621
http://www.robotelectronics.co.uk/htm/eth0621tech.htm 9/11
VisualstudioexpressC#examples
ThetestprogramisavailableasVisualC#expressreadybuiltinstallationfileshere,orasVisualC#express
projectwithsourcefileshere.
VisualstudioexpressisprovidedfreefromMicrosoft:http://www.microsoft.com/exPress/download/
AccessfromtheInternet
TheETH0621canbecontrolledovertheinternetalmostaseasilyasonyourlocalnetwork.Yournetworkwill
mostlikelybeconnectedtotheinternetwithabroadbandrouter.ThiswillprovideNAT(NetworkAddress
Translation)andFirewallservices.ToaccesstheETH0621fromtheinternetyouwillneedtoopenupport17494
(0x4456)toallowincomingTCPconnections.Becarefulnottoopenupanyotherports.Thereareawidevariety
ofroutersandwecannotgivedetailsforallofthem.Ifindoubtaskyoursystemadministratorforassistance.The
followingshowshowtoopenupaportonaNetgearDG834router.Theexampleisforaboardonthenetworkat
192.168.0.96andport17494,althoughthesevaluesareeasilyaltered.
Afterloggingontoyourrouterssetuppage,thefirstthingtodoiscreateanewservice.Clickonthe"Services"
menuthen"AddCustomService".Enteranamefortheservice,selectTCPandentertheETH0621'sportaddress
forboththestartandfinishports.Click"Apply".