SBC TCP/IP-Enhancements Owner's manual

Document 26-867 | Edition ENG05 │ 2019-02-13

Manual

TCP/IP Enhancements

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

0-1

Content

0

0 Content

0.1 Document History ...........................................................................................0-3

0.2 Brands and trademarks .................................................................................0-3

1 Introduction

1.1 OSI Referenz Model .......................................................................................1-1

1.2 Minimum requirements ...................................................................................1-2

1.3 Abbreviations ..................................................................................................1-2

2 Usingcongurationles

2.1 General ...........................................................................................................2-1

2.2 DeviceConguratorforSNTP,SNMP,DHCPandDNS .................................2-1

2.3 WebdiagnosticoverCGIinterface .................................................................2-3

2.4 Advancedprogramming .................................................................................2-3

3 PPP(PointtoPointProtocol)

3.1 Introduction .....................................................................................................3-1

3.2 EnablePPP ....................................................................................................3-3

3.3 Connection types and related parameters ......................................................3-3

3.3.1 Direct cable connection ..................................................................................3-3

3.3.2 Modem connection .........................................................................................3-4

3.3.3 WirelessconnectionwithPPPasserver ........................................................3-4

3.3.4 WirelessconnectionwithPPPasclient ..........................................................3-4

3.3.5 Authenticationprocessing ..............................................................................3-5

4 DHCPandDNS

4.1 DHCP-DynamicHostCongurationProtocol ...............................................4-1

4.2 DNS-DomainNameSystem .........................................................................4-2

4.3 EnableDHCP .................................................................................................4-3

4.3.1 ActivatingS-BusSupport................................................................................4-3

4.3.2 UsingxIPaddresses ....................................................................................4-3

4.3.3 DynamicIPaddressing ...................................................................................4-4

4.3.4 CheckingIPcongurationwithWeb-Connect ................................................4-4

4.4 UsinghostnamesandenableDNS ...............................................................4-5

4.4.1 AssigninghostnametotheSaiaPCD

® ................................................................................................... 4-5

4.4.2 UsingDNSnameresolution ...........................................................................4-5

4.4.3 UsingnameresolutionwithSaiaPG5

®

FBoxes .............................................4-6

4.4.4 Usingnameresolutionwithrouter ..................................................................4-6

4.5 UsingCSFcommands....................................................................................4-7

5 SNTP–SimpleNetworkTimeProtocol

5.1 Introduction .....................................................................................................5-1

5.2 EnableSNTP ..................................................................................................5-2

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

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Content

0

6 Email

6.1 SMTP–SimpleMailTransferProtocol ...........................................................6-1

6.2 UsingEmailfunctionalitywithSaiaPG5

®

FBoxes ..........................................6-2

6.3 SupportedSaiaPCD

®

systems ......................................................................6-3

6.4 Mail account checklist .....................................................................................6-4

7 SNMP-SimpleNetworkManagementProtocol

7.1 Introduction .....................................................................................................7-1

8 AdvancedWebdiagnostic

8.1 Introduction .....................................................................................................8-1

8.2 PPPCongurationusingWebCGI .................................................................8-2

8.2.1 Genericaccesssyntax ...................................................................................8-2

8.2.2 Specialtags ....................................................................................................8-2

8.2.3 PPPTAGlist ...................................................................................................8-3

8.3 DHCPdiagnosethroughWebCGI .................................................................8-10

8.3.1 Accesssyntax.................................................................................................8-10

8.3.2 Specialtags ....................................................................................................8-10

8.3.3 DHCPandDNSTaglist .................................................................................. 8-11

8.3.4 DHCPTagtable ..............................................................................................8-11

8.3.5 DNSTagtable ................................................................................................8-13

8.4 SNTPdiagnosethroughWebCGI .................................................................8-14

8.4.1 Accesssyntax.................................................................................................8-14

8.4.2 Specialtags ....................................................................................................8-14

8.4.3 SNTPTAGlist.................................................................................................8-15

8.5 SNMPdiagnosethroughWebCGI .................................................................8-17

8.5.1 Accesssyntax.................................................................................................8-17

8.5.2 SNMPTaglist .................................................................................................8-17

A Appendix

A.1 Icons ...............................................................................................................A-1

A.2 Technicaloverview .........................................................................................A-2

A.3 Configurationfile.............................................................................................A-3

A.3.1 Editingcongurationlewithtexteditor .........................................................A-3

A.4 Contact ..........................................................................................................A-4

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

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Content

0

0.1 DocumentHistory

Version Date Changes Remarks

pEN01 2009-03-17 - NewEdition

pEN01 2010-01-15 - Majorchanges

pEN01 2010-03-31 - Changes

EN01 2010-08-23 Chapt. 2

Chapt. 8.1

- Reworked chapter 2

-Extendedchapter8.1

EN02 2011-08-26 Cover

Chapt. 4.4.4

Modiedthecoverpicture:

removedPCD2.M480andPCS1

NewwarninginCh4.4.4

EN03 2012-11-21 Chapt. 1 & 4 Modicationinchapter1and4

EN04 2013-11-08 - Newlogoandnewcompanyname

ENG05 2019-02-12 Chaot. A Newphonenumber,

valid from 15th February 2015

0.2 Brandsandtrademarks

SaiaPCD

®

andSaiaPG5

®

areregisteredtrademarksofSaia-BurgessControlsAG.

Technicalmodicationsarebasedonthecurrentstate-of-the-arttechnology.

Saia-BurgessControlsAG,2009

©

Allrightsreserved.

PublishedinSwitzerland

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

1-1

OSI Referenz Model

Introduction

1

1 Introduction

ThismanualdealswiththesupportedIPprotocolsofSaiaPCD

®

systems. Each

protocolwillbeexplainedandthentheusewillbeexplainedthroughanexemplary

conguration.

Inadditiontotheprotocolsdiscussedinthisguide,Ethernet-S-Busaswellasother

additionalIP-protocolsoftheautomationserverfortheSaiaPCD

®

are supported at

rmwarelevel:

 HTTP  Manual 26/790

 FTP   Manual 26/855

 ModbusTCP,UDP Manual 26/866

 BACnet/IP  Manual 26/849

 LON/IP  Manual 26/883

1.1 OSIReferenzModel

ThefollowingISO/OSIlayermodelrepresentstheIPprotocolssupportedbySaia

PCD

®

controllers.Protocolshighlightedincolourarenewandwillbesupportedbythe

currentrmwareversionsofPCD3andPCD2.M5CPUs.

Userprogram

FBoxLibs

7

Application

HTTP/

FTP-

Ser-

ver

IL,CSF-commands

DHCP

DNS

SNTP

SNMP

BACnet

E-Mail

SMTP

S-Bus

Mod-

bus

Open

Data

Mode

6

Session

Notused

5

Presentati-

on

4

Transport TCP,UDP

3

Network IP

2

Data Link

Ethernet

PPP

1

Physical

IEEE802.3

RS-232,

Modem

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

1-2

Minimum requirements | Abbreviations

Introduction

1

1.2 Minimumrequirements

SaiaPCD

®

Type HW version Firmware Version

PCD3.Mxxx0 ≥D 1.14.23

PCD3.M3120,M3020 ≥E48 1.14.23

PCD2.M5xx0 A (no restriction) 1.14.23

PCD1.M2120 A (no restriction) 1.14.23

PCD2.M480 not supported

PCD3.M2x30(WAC,Compact) A (no restriction)

SaiaPG5

®

version2.0withDeviceCongurator

1.3 Abbreviations

TCP: Transfer Control Protocol

IP: Internet Protocol

UDP: User Datagramm Protocol

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

2-1

General/DeviceCongurator

Using Conguration les

2

2 Usingcongurationles

2.1 General

ThecongurationofallTCP/IPprotocolsisdonewiththeDeviceConguratorofSaia

PG5

®

2.0.AllcongurationparametersarestoredinonecongurationlePCD.SCFG

whichisstoredintheSaiaPG5

®

projectfolder.ThedownloadwiththeDeviceCon-

guratorincludestheHWcongurationandthedownloadofthecongurationleto

thePLCsystem.

Saia PG5

®

Device Configurator

 HW Configuration



Configuration file

Web configuration

Pages using CGI interface

read only

Ethernet or Web-Connect

u

p- and download

USB or Ethernet

Saia PCD

®

System with NT-OS

2.2 DeviceConguratorforSNTP,SNMP,DHCPandDNS



StartDeviceCongurator



ChooseCPUtype



SelectFWversionTousenew

IPenhancementsyouneedat

leastaFWversion1.14.xx

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

2-2

General/DeviceCongurator

Using Conguration les

2



SelectIPprotocol



EachIPprotocolcanbeena-

bled separately.

Save:Savestheconguration

PCD.SCFGintheprojectCPU

folder.

Download:Downloadshard-

warecongurationandIPpro-

tocolcongurationle(optional

PCD.SCFG)totheSaiaPCD

®

system. By default the down-

loadingofthedevicecongura-

tionincludes:

-Hardwareconguration

-CongurationlePCD.SCFG

(optional)

OntheSaiaPCD

®

thelewill

bestoredintheCongfolder

(PLC_SYS)

Pleasenote;thisfolderisnotaccessableforthe

user

Upload:Downloadshardware

congurationandIPprotocol

congurationle(PCD.SCFG)

fromtheSaiaPCD

®

system.

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

2-3

WebdiagnosticoverCGIinterface|Advancedprogramming

Using Conguration les

2

2.3 WebdiagnosticoverCGIinterface

Mostofthecongurationparameterscanbe

visualisedbyusingtheCGIinterface.

CGI Call

Saia PCD

®

System

Answer

2.4 Advancedprogramming

ForadvancedprogrammingusingCSFcommandspleaserefertothesystemfunc-

tionlibraryandhelpdocumentsyoundinSaiaPG5

®

2.0 version.

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

3-1

Introduction

PPP (Point to Point Protocol)

3

3 PPP(PointtoPointProtocol)

3.1 Introduction

Thisisaprotocolthatestablishescommunicationbetweenonepoint(location)and

another.PPPismainlyusedtotransporttheTCP/IPprotocolacrossaseriallineor

modem connection.

PPPoperatesatthebottom2layersoftheISO/OSImodelandallowsthesame

functions as an Ethernet connection.

Tofullthegreatersafetyneedsdenedfordiallingincompanynetworksor

ininstallationswithcriticaltasks,theCHAPprotocol(ChallengeHandshake

AuthenticationProtocol)hasbeenintroduced.UnlikePAP(PasswordAuthentication

Protocol)thepasswordtransmittedhereisencrypted.

WebandFTPserverscanbeaccessed,evenwiththecheaperdevicesthathave

noEthernetconnection.TheycanbeintegratedintoIPenvironmentsviaserial

ports. Modems connected to the serial port of a such devices can directly be used

to connect the devices to internet or intranet. Standard web browsers can be utilized

withoutadditionalsoftwarewithallSaiaPCD

®

controllersSaiaPCD

®

controllers can

nowalsobeconnecteddirectlyusingmoderncommunicationsmethods,likeGPRS

andUMTSnetworks.

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

3-2

Introduction

PPP (Point to Point Protocol)

3

PCD3.M5

PLCdataandlesystem

PPP

RS-232

IPProtocols

Ethernet

Web-BrowserFTP-ClientMailboxPG5/SCADA PCD2.M5

Internet

Intranet

Telecom

BycreatingaPPPconnection,thedefaultgatewaywillbedenedasPPP.Thus,forcalls

outsidethelocalnetworkonlyconsideredPPPwillbetaken(anditisnolongerpossibleto

communicateviathedefaultgatewayoftheEthernetinterface,whilePPPisactive).

WhenusingDHCPontheEthernetinterfaceinparallelwithaPPPconguration,theDHCP

conguration«AutomaticGatewayIPSetting»intheDeviceConguratormustbesetto

«No».Inthisconstellation(whileoperatingwithoutthePPP)canbecommunicatedonlyon

the local network.

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

3-3

EnablePPP|Connectiontypesandrelatedparameters

PPP (Point to Point Protocol)

3

3.2 EnablePPP

PPPcanbeactivatedonall

RS-232 Interfaces able to run

fullRS-232withhandshaking.

SwitchPPPEnabletoYes

With “Immediate start” after

downloadPPPstartsimme-

didiately.PPPcanbecotrolled

withSaiaPG5

®

FBoxesorCSF

commands.

StartandstopPPP

ThestateofPPPcanoneverytimebecontrolledbytheuserprogrameitherbyusing

SaiaPG5

®

FBoxesorCSFcommands.

AllPPPCSFlibrariesaredescribedinPG52.0.

3.3 Connectiontypesandrelatedparameters

PleasereadtheTCP/IPenhancementsapplicationnoteforfurtherdetails.Theapplicationcanbe

foundasdownloadonthePCDsupportsite.

3.3.1 Directcableconnection

Themostimportantparametersforsuchaconnectionare:

■ Deneswhichdeviceisclient/server.TheservershalldenetheIPaddresses

(localandremote),theclientcanleavetheeldsunspecied.

■ TheUseModemparametershallbesetto0.

■ Anyscriptcanbedened.IfoneofthedevicesisaPCrunningoverWindows

®

,

thedefaultscriptcanbeusedontheSaiaPCD

®

side.

■ TheCheckDCD,DTRPulseandDCDTimeoutshallbesetto0fortheseparam-

eters.

■ Forconnectionkeep-alivechecks,theEnaEReqparametershallbeset,togeth-

erwiththeERTIntervalandERNumber.Incaseofconnectionproblems,the

PPPconnectionwillbeclosedandrestartedaccordingtogivenparameters.

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

3-4

Connection types and related parameters

PPP (Point to Point Protocol)

3

3.3.2 Modemconnection

Themostimportantparametersforsuchaconnectionare:

■ Deneswhichdeviceisclient/server.TheservershalldenetheIPaddresses

(localandremote),theclientcanleavetheeldsunspecied.

■ TheUseModemparametershallbesetto1.Thisenablesthecheckingofthe

DSR/DCDsignalsassoonastheconnectionisestablished.Assoonasoneof

thesesignalsisdown,theconnectionisclosedandrestartedaccordingtogiven

parameters.

■ ThemodemscriptlinesshalldenedeAT*commandstosetupthemodemand

to initiate the modem connection. Modem can be set in auto-answer mode (in-

denitetimeuntilconnectionisestablished)orcaninitiatethedialingsequence.

■ TheCheckDCDparametershallbesetto1togetherwiththeDCDTimeoutpa-

rameter.ThisallowscheckingtheDCDsignalafterthemodemscripthasbeen

played.

■ TheDTRPulseshallbesetto1.Ifcorrectlyinitialized,themodemwillbereset

whentheDTRiskeptlowforadenedperiod.Themodemwillalsoraisethe

DSRassoonastheDTRsignalishighagain.

■ ItisnotusefultosettheEnaEReq,ERTIntervalandtheERNumberparameter.

3.3.3 WirelessconnectionwithPPPasserver

Themostimportantparametersforthistypeofconnection,e.g.PPPoverBluetooth,

are identical to the modem connection parameters.

TheexceptionistheDTRpulseparameterwhichshallbesetto0.TheBluetoothde-

viceisautomaticallyresetduringitsstart-upsequence.

Anyscriptcanbedenedasforthedirectconnectionsettings.

IthastobenotedthattheBluetoothdeviceshallbeconguredseparatelyinitsown

congurationle.TheEndPointmodeshallbeselected.Secureconnection(PIN

enabled)ordeningtheremotepartnerBluetoothaddresscanbedened.

3.3.4 WirelessconnectionwithPPPasclient

Themostimportantparametersforthistypeofconnection,e.g.PPPoverBluetooth,

are identical to the modem connection parameters.

OneexceptionistheDTRpulseparameterwhichshallbesetto0.TheBluetooth

deviceisautomaticallyresetduringitsstart-upsequence.

ThesecondexceptionistheCheckDCDparameter.Ithastobesetto2,allowingthe

PPPscripttobeplayedwhenthedeviceisreallyconnectedtotheremotepartner.

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

3-5

Connection types and related parameters

PPP (Point to Point Protocol)

3

Anyscriptcanbedenedasforthedirectconnectionsettings.

IthastobenotedthattheBluetoothdeviceshallbeconguredseparatelyinitsown

congurationle.Theconnectingmodeshallbeselected,togetherwiththeremote

partnerBluetoothaddress.Othersecurityconnection(e.g.PINenabled)canbeset.

3.3.5 Authenticationprocessing

PPPisdeningtwowaysofauthentication.Therstisthepeerauthentication;the

secondisthelocalauthentication.Bothcanbeactiveatthesavetime,oronlyone,or

none of them.

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

4-1

DHCP-DynamicHostCongurationProtocol

DHCP and DNS

4

4 DHCPandDNS

4.1 DHCP-DynamicHostCongurationProtocol

ThisisaprotocolfortheautomaticcongurationofIPcommunicationsettings.

Lengthymanualentryofcommunicationsparametersisnolongernecessary;instead

theyareassigneddirectlyfromacentralserver.Afterarequest,aDHCPclientre-

ceivestheparameterIPaddress,subnetmask,gatewayandDNSaddressautomati-

cally.

Theintegrationofdevicesinexistingnetworkstakesplaceautomatically.Theonly

manualsettingontheclientdeviceistheonethattellsittotakeitscongurationauto-

maticallyfromaDHCPserver.

Withoutknowingthenetworkparameters,devicescanbeintegratedintoexisting

networks.Thisalsomakesiteasiertoincreasetheavailabilityofdevicesandsimplify

themanagementofaddressesused.Evenservicepersonnelwithnotechnicalback-

groundorknowledgeoftheprecisedatacanexchangedevices.

Largernetworksbecomechild’splay.Networksofanysizecanbecreatedthrough

optimumassignmentofIPaddresses.Itispossible,withoutmajorclarication,to

connectdevicesdirectlyeventonetworksthatareconstantlyexpanding.

DHCP(DNS)

Server

Request

IPAddress

Subnet Mask

Gateway

DNSAddress





TheIPcongurationreceivedfromtheDHCPserverwillbeusedwhileatime

speciedbytheDHCPserver(leastime).Aftertheleasetimehaselapsed,anew

address is requested from the server (usually the server will provide the same ad-

dressagain).

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

4-2

DNS-DomainNameSystem

DHCP and DNS

4

4.2 DNS-DomainNameSystem

Accesstocontrollersthroughtheassignmentofxedhostnames.Toestablishcommu-

nicationbetweentwocontrollers,itisnotnecessarytoknowtheIPaddressofthetarget

controller,onlyitshostname.Usingthisname,theIPaddresscanberequestedfroma

DNSserver.

DevicesnolongeruseanonymousIPaddressesthatcontainlittleinformation.Thestruc-

tureandavailabilityofindividualnetworksaredenedonce,anddonotneedtobeadapt-

edtochangesintheavailableIPaddresses.Controllersaresuppliedpre-conguredand

programmed.TheIPaddressesareonlytransferredon-siteandaregenerallynotknown.

On-site users only need to know the user-friendly device names. Systems therefore be-

comeeasierandtheiroperationmoreintuitive.Thehostnamescancontainrelevantand

usefulinformation,suchasthelocationorfunctionofthedevice,makingitmuchmore

intelligiblethanIPaddresses.Documentationofnetworkswithmultiplestationscanbe

displayed more clearly.

Itispossibletocreaterelativelylargeorsmallnetworksthatareregularlyaccessed

fromdierentlocations.Thetopologiesofthesenetworkscanbeadaptedtocircum-

stances,withoutrestrictingstationavailability.Totheoutsideworld,stationnames

can still be used.

Name IP

PCD_01.xxx.com 192.168.22.1

PCD_02.xxx.com 192.168.22.2

PCD_03.xxx.com 192.168.22.3

PCD_04.xxx.com 192.168.22.4

PCD_05.xxx.com 192.168.22.5

http://PCD_02.xxx.com?





192.163.22.2

PCD_04

PCD_01

PCD_03

Ethernet

PCD_02.xxx.com

192.163.22.2

PCD_02

DNS-Server

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

4-3

EnableDHCP

DHCP and DNS

4

4.3 EnableDHCP

4.3.1 ActivatingS-BusSupport

TouseanyIPfunctionalityonaSaiaPCD

®

the S-Bus support needs to be active

4.3.2 UsingxIPaddresses

ToactivatetheuseofxIPaddressitisnecessarytoenableTCP/IPontheonboard

Ethernetcommunicationsettings:

ChangeTCP/IPEnabledtoYes

MasterGatewayisonlyavailablewhenusing

xIPaddresses.

WhenDHCPisactivatedthexIPaddress

congurationissetto0.0.0.0bytheDevice

ConguratorfromPG52.0SP2andlater.

In case a new address is written in runtime

(withanFBox),thiswrittenIPwillbeused,

if the FW 1.16.27 and newer is used re-use

DHCP,theIPmustbere-writtento0.0.0.0by

theuserprogramortheDeviceCongurator.

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

4-4

EnableDHCP

DHCP and DNS

4

4.3.3 DynamicIPaddressing

Set”TCP/IPEnabled”toNo

TousedynamicIPaddressingyouneedto

activateDHCP

AtstartuptheSaiaPCD

®

willlookforDHCP

serversettingsusingbroadcastcommands.

Usingnetworkwithroutersitcouldbehelp-

fultoactivateautomaticGatewayandDNS

setting.

4.3.4 CheckingIPcongurationwithWeb-Connect

HowcanIcheckthereceivedIPconguration?OnepossibilityistouseWeb-Con-

nectandtheWebdiagnosticcommandovertheCGIinterface:

1. OpenUSBstation(eg.Station_USB)withWeb-Connect(RefertoWeb-Connectmaual)

2. ConnectSaiaPCD

®

toPCbyusingUSBcable

3. OpenInternetExplorerandtypethefollowingcommand:

http://localhost/station_USB/cgi-bin/readVal.exe?SYS-DHCP,AssignedIPAddr

4. ThereturnedvaluewillshowtheIPaddressreceivedbytheDHCPserver

Saia-Burgess Controls AG

Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

4-5

UsinghostnamesandenableDNS

DHCP and DNS

4

4.4 UsinghostnamesandenableDNS

4.4.1 AssigninghostnametotheSaiaPCD

®

ToaccessSaiaPCD

®

by its name you need

todeneahostname.

4.4.2 UsingDNSnameresolution

Communication by host name

EnableDNS

SetIPaddressofDNSserver

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Manual TCP/IP Enhancements │ Document 26-867 ENG05 │ 2019-02-13

4-6

UsinghostnamesandenableDNS

DHCP and DNS

4

4.4.3 UsingnameresolutionwithSaiaPG5

®

FBoxes

CommunicationFBoxlibrary

ThisFBoxissuesaDNSquerytoretrivean

IPaddressaccordingtoagivenhostname.

TouseQueryIPNameFBoxDNSneedsto

be active.

TheexecutionofthisFBoxisdonebyapositivetransientontheinput.Thereturned

IPaddresscanbeusedforotherFBoxesusingIPaddresses.

Callingmultiple«queryF-Boxes»atthesametime,worksonlyifallF-Boxesareinthesame

Fupla-File.

4.4.4 Usingnameresolutionwithrouter

TouseDNSnameresolution

passingthroughrouter,theSaia

PCD

®

controllerconguration

needstheroutersIPaddressor

DNSserveraddress

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SBC TCP/IP-Enhancements Owner's manual

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