Protogate Freeway 3600 Betriebsanweisung

Protogate, Inc.12225 World Trade Drive, Suite RSan Diego, CA 92128ADCCP NRMProgrammer’s GuideDC 900-1317JApril 2005

10 DC 900-1317JADCCP NRM Programmer’s Guide

100 DC 900-1317JADCCP NRM Programmer’s GuideThe DLI and TSI configuration process is a part of the loopback testing proceduredescribed in Appendix C a

5: ADCCP NRM Link Configuration Using dlicfgDC 900-1317J 101UNIX example: freeway/client/op-sys/bin/tsicfg nrmaltcfgNT example: freeway\client\op-sys\

102 DC 900-1317JADCCP NRM Programmer’s Guideration files you created in Step 4 and Step 5 into the bin directory for your partic-ular TCP/IP package.@

5: ADCCP NRM Link Configuration Using dlicfgDC 900-1317J 103Figure 5–1: DLI and TSI Configuration ProcessApplicationDLITSITransportEnvironment2836dlic

104 DC 900-1317JADCCP NRM Programmer’s Guide5.2 DLI Session ConfigurationThe DLI text configuration file used by the dlicfg program consists of the fo

5: ADCCP NRM Link Configuration Using dlicfgDC 900-1317J 105main // DLI “main” section: //{asyncIO = “no”; // Wait for I/O completion //tsiCfgName = “

106 DC 900-1317JADCCP NRM Programmer’s GuideTable 5–1: ADCCP NRM ICP Link Configuration Parameters for Using dlicfgdlicfg Option Name Default Valid Ra

5: ADCCP NRM Link Configuration Using dlicfgDC 900-1317J 107The parameters and values shown in Ta bl e 5 –1 are described in the following places: •

108 DC 900-1317JADCCP NRM Programmer’s Guide

DC 900-1317J 109Chapter6ADCCP NRM Line-Monitor FunctionThis chapter describes the Line-Monitor function of the ADCCP NRM protocol. Whenselected, this

DC 900-1317J 11List of TablesTable 1–1: ADCCP NRM Data Rate and Number of Links... 28Table 2–1: ADCCP Frame Types...

110 DC 900-1317JADCCP NRM Programmer’s Guide6.2 Configuring the Line-Monitor FunctionWhen the Monitor Session for an ICP becomes attached, monitoring

6: ADCCP NRM Line-Monitor FunctionDC 900-1317J 111The normal ICP response to the Configure Monitor command is the same command(usProtCommand field set

112 DC 900-1317JADCCP NRM Programmer’s GuideusTime: This field of the Monitor Data Notification header contains the time of theevent, in terms of mill

6: ADCCP NRM Line-Monitor FunctionDC 900-1317J 113usFiller[2]: This field of the Monitor Data Notification header rounds out the first 12bytes. It con

114 DC 900-1317JADCCP NRM Programmer’s GuideusFrameID: This field of the Frame Abstract contains a code for the frame ID in theframe’s Control field.

6: ADCCP NRM Line-Monitor FunctionDC 900-1317J 1156.5 Line-Monitor Client Program (nrmmon)Protogate’s provides an ADCCP NRM Line-Monitor client progra

116 DC 900-1317JADCCP NRM Programmer’s Guide

DC 900-1317J 117AppendixAClock SignalsThe ADCCP NRM communication interface is designed to use either externally orinternally generated clock signals.

118 DC 900-1317JADCCP NRM Programmer’s Guide

DC 900-1317J 119AppendixBError CodesThere are several methods used by the DLI and ADCCP NRM software to report errors(Ta bl e B –1 lists the ADCCP NR

12 DC 900-1317JADCCP NRM Programmer’s Guide

120 DC 900-1317JADCCP NRM Programmer’s GuideTabl e B– 1: ADCCP NRM Error CodesCode Mnemonic Meaning0DLI_ICP_ERR_NO_ERRA data block has been successful

DC 900-1317J 121AppendixCADCCP NRM Loopback Test ProgramsNoteIn this document, the term “Freeway” can mean either a Freewayserver or an embedded ICP.

122 DC 900-1317JADCCP NRM Programmer’s GuideTo run the test program, perform the following steps:1. Make sure the server TSI configuration parameter i

C: ADCCP NRM Loopback Test ProgramsDC 900-1317J 123osf1 (for an OSF1 system)UNIX example: make -f makefile.bsd allmake -f makefile.test.bsd nrmtestFor

124 DC 900-1317JADCCP NRM Programmer’s GuideUNIX example: freeway/client/<op-sys>/binVMS example: [FREEWAY.CLIENT.<vms_platform>_tcp-sys

C: ADCCP NRM Loopback Test ProgramsDC 900-1317J 125• Before you run dlicfg and tsicfg, run the makefc.com command file to create theforeign commands u

126 DC 900-1317JADCCP NRM Programmer’s Guidemakefile. It uses the same TSI configuration file as nrmalp, but it uses a unique DLIconfiguration file: n

DC 900-1317J 127AppendixDADCCP NRM Detailed Command and Response Headers This appendix is intended as an aid to programmers writing an application pro

128 DC 900-1317JADCCP NRM Programmer’s GuideD.1 Application Sequence of Events1. Establish a connection to a link • Attach to the ICP • Set buffer siz

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 129D.2 Command sequences1. Sequence of packet exchanges for establishing a connection a

DC 900-1317J 13PrefacePurpose of DocumentThis document contains information for the development of applications that use Pro-togate’s ADCCP NRM softwa

130 DC 900-1317JADCCP NRM Programmer’s GuideReceive a resp_normal-ack-packet (DLI_PROT_RESP_NORMAL_ACK)Receive a resp_local-ack-packet

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 131D.3 attach-packet Packet Description This packet is used to attach an application to

132 DC 900-1317JADCCP NRM Programmer’s GuideD.4 set-buffer-size-packet Packet Description This packet is used to set an ICP Message buffer size. The i

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 133D.5 set-buffer-size-ack-packet Packet Description This packet is used to receive an

134 DC 900-1317JADCCP NRM Programmer’s GuideD.6 link-config-packet Packet Description This packet is used to configure a link. The data field consists

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 135 usProtLinkID = port number usProtCircuitID = 0 usProtSessio

136 DC 900-1317JADCCP NRM Programmer’s GuideD.7 station-config-packet Packet Description This packet is used to configure a station on a link. The dat

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 137NoteThe Freeway header is used only with DLI (it is not applicable forDLITE), and th

138 DC 900-1317JADCCP NRM Programmer’s GuideD.8 limit-config-packet Packet Description This packet is used to adjust station timer and retry limit whe

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 139D.9 start-link-packet Packet Description This packet is used to start or enable a li

14 DC 900-1317JADCCP NRM Programmer’s Guide• a client computer that runs the following:• TCP/IP (for a Freeway server)• Freeway data link interface (D

140 DC 900-1317JADCCP NRM Programmer’s GuideD.10 start-link-ack-packet Packet Description This packet is used to receive a start link ack packet. Pack

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 141D.11 start-station-packet Packet Description This packet is used to start or enable

142 DC 900-1317JADCCP NRM Programmer’s GuideD.12 start-station-ack-packet Packet Description This packet is used to receive a start station ack packet

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 143D.13 set-multipoint-list-packet (optional)Packet Description Valid only if option 7

144 DC 900-1317JADCCP NRM Programmer’s GuideNoteSend a size of 0 if multi-point addressing for all stations on a phys-ical link is to be suppressed.Pa

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 145D.14 station-init-packet (optional) Packet Description This packet is valid only if

146 DC 900-1317JADCCP NRM Programmer’s GuidePacket ExchangesusProtCommand sent usProtCommand received------------------ ----------

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 147D.15 station-init-ack-packet (optional) Packet Description This packet is used to ac

148 DC 900-1317JADCCP NRM Programmer’s GuideD.16 send-exchange-id-packet (optional) Packet Description This packet is only valid if option 1 (station-

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 149D.17 recv-exchange-id-packet (optional) Packet Description This packet is valid only

PrefaceDC 900-1317J 15Protogate ReferencesThe following documents provide useful supporting information, depending on thecustomer’s particular hardwar

150 DC 900-1317JADCCP NRM Programmer’s GuideD.18 station-reset-packet Packet Description This packet is used to reset an active NRM remote secondary (

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 151D.19 station-reset-ack-packet Packet Description The ICP uses this packet to report

152 DC 900-1317JADCCP NRM Programmer’s GuideD.20 recv-station-reset-packet Packet Description The ICP uses this packet to report when an active statio

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 153D.21 recv-station-reset-ack-packet Packet Description The client uses this packet to

154 DC 900-1317JADCCP NRM Programmer’s GuideD.22 write-unform-data-packet (or write-unform-data-eom-packet)Packet Description This packet is valid onl

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 155Packet ExchangesusProtCommand sent usProtCommand received----------------

156 DC 900-1317JADCCP NRM Programmer’s GuideD.23 receive-unform-data-packet Packet Description This packet is valid only if option 5 (station-config-p

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 157D.24 write-unnum-data-packet (or write-unnum-eom-data-packet)Packet Description This

158 DC 900-1317JADCCP NRM Programmer’s GuideDataData to be sent to remote application. Packet ExchangesusProtCommand sent usProtCommand rec

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 159D.25 receive-unnum-data-packet Packet Description This packet is valid only if optio

16 DC 900-1317JADCCP NRM Programmer’s Guide• Getting Started with Freeway 1200 DC 900-1536• Getting Started with Freeway 1300 DC 900-1538• Getting Sta

160 DC 900-1317JADCCP NRM Programmer’s GuideD.26 write-data-packet Packet Description This packet is valid only if the client has not enabled option 9

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 161DataData to be sent to remote application. Packet ExchangesusProtCommand sent

162 DC 900-1317JADCCP NRM Programmer’s GuideD.27 receive-data-packet Packet Description This packet is valid for primary stations if option 8 (station

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 163D.28 resp-normal-ack-packet Packet Description This packet is used to acknowledge on

164 DC 900-1317JADCCP NRM Programmer’s GuideD.29 resp-local-ack-packet Packet Description This packet is used by the ICP to acknowledge a DLI_PROT_SEN

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 165D.30 buffer-rpt-packet Packet Description This packet is used to request a buffer re

166 DC 900-1317JADCCP NRM Programmer’s GuideD.31 buffer-rpt-ack-packet Packet Description This packet is received in response to a "buffer-rpt-pa

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 167typedef int INT32;typedef struct sdlc_port_buffers{ INT32 RcvbufPrealloc;

168 DC 900-1317JADCCP NRM Programmer’s GuideD.32 stats-rpt-packet Packet Description This packet is used to request a link’s statistics report. This c

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 169D.33 stats-rpt-ack-packet Packet Description This packet is received in response to

PrefaceDC 900-1317J 17Document ConventionsThis document follows the most significant byte first (MSB) and most significant wordfirst (MSW) conventions

170 DC 900-1317JADCCP NRM Programmer’s GuideD.34 version-rpt-packet Packet Description This packet is used to request the ICP software versions. P

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 171D.35 version-rpt-ack-packet Packet Description This packet is received in respon

172 DC 900-1317JADCCP NRM Programmer’s GuideD.36 recv-link-except-packet Packet Description The ICP uses this packet to report operational excepti

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 173D.37 resp-error-packet Packet Description The ICP uses this packet to report receipt

174 DC 900-1317JADCCP NRM Programmer’s GuideD.38 stop-station-packet Packet Description This packet is used to stop a station on a link. Packet Header

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 175D.39 stop-station-ack-packet Packet Description This packet is used to acknowledge s

176 DC 900-1317JADCCP NRM Programmer’s GuideD.40 stop-link-packet Packet Description This packet is used to stop or disable a link and all active

D: ADCCP NRM Detailed Command and Response HeadersDC 900-1317J 177D.41 stop-link-ack-packet Packet Description This packet is used to acknowledge

178 DC 900-1317JADCCP NRM Programmer’s GuideD.42 detach-packet Packet Description This packet is used to detach an application from the protocol.

DC 900-1317J 179IndexAABM 38ADCCP NRMerror codes 119hardware description 29overview 27protocol summary 31software description 29Addressingframe 34Inte

18 DC 900-1317JADCCP NRM Programmer’s GuideRevision HistoryThe revision history of the ADCCP NRM Programmer’s Guide, Protogate documentDC 900-1317J, i

180 DC 900-1317JADCCP NRM Programmer’s Guidesymmetric 33unbalanced 31third variant 75Configure link command 99, 104Control packets 52clientDLI_PROT_CF

IndexDC 900-1317J 181dlRead functionsee Control packetsdlRead (see also Functions) 50dlTerm (see also Functions) 50dlWrite functionsee Control packets

182 DC 900-1317JADCCP NRM Programmer’s GuideMaximum data buffer size 85see also Control packetsMore data indication 60, 62, 94, 97move.com file 101, 1

IndexDC 900-1317J 183Transport subsystem interface (TSI) 26TSI configurationsee Configuration, TSItsicfg preprocessor program 100UUNIXconfiguration pr

184 DC 900-1317JADCCP NRM Programmer’s Guide

ADCCP NRM Programmer’s GuideDC 900-1317JCustomer Report FormWe are constantly improving our products. If you have suggestions or problems you wouldlik

Protogate, Inc.Customer Service12225 World Trade Drive, Suite RSan Diego, CA 92128

PrefaceDC 900-1317J 19Customer SupportIf you are having trouble with any Protogate product, call us at (858) 451-0865 Mondaythrough Friday between 8 a

Protogate, Inc.12225 World Trade Drive, Suite RSan Diego, CA 92128(858) 451-0865ADCCP NRM Programmer’s Guide© 2005 Protogate, Inc. All rights reserved

20 DC 900-1317JADCCP NRM Programmer’s Guide

DC 900-1317J 21Chapter1Introduction1.1 Product OverviewProtogate provides a variety of wide-area network (WAN) connectivity solutions forreal-time fin

22 DC 900-1317JADCCP NRM Programmer’s GuideTo maintain high data throughput, Freeway uses a multi-processor architecture to sup-port the LAN and WAN s

1: IntroductionDC 900-1317J 231.1.2 Embedded ICPThe embedded ICP connects your client computer directly to the WAN (for example,using Protogate’s ICP2

24 DC 900-1317JADCCP NRM Programmer’s GuideSummary of product features:• Provision of WAN connectivity either through a LAN-based Freeway server ordir

1: IntroductionDC 900-1317J 251.2 Freeway Client-Server EnvironmentThe Freeway server acts as a gateway that connects a client on a local-area network

26 DC 900-1317JADCCP NRM Programmer’s Guide1.2.1 Establishing Freeway Server Internet AddressesThe Freeway server must be addressable in order for a c

1: IntroductionDC 900-1317J 271.4.2 Opening a SessionAfter the DLI and TSI configurations are properly defined, your client application usesthe dlOpen

28 DC 900-1317JADCCP NRM Programmer’s GuideEach serial port (link) on the ICP operates independently of the other links on the sameICP and can be conf

1: IntroductionDC 900-1317J 291.5.1 Software Description Protogate’s ADCCP NRM product includes the following major software components:• A group of c

DC 900-1317J 3ContentsList of Figures 9List of Tables 11Preface 131Introduction 211.1 Product Overview... 211.1.1 Freeway

30 DC 900-1317JADCCP NRM Programmer’s Guide

DC 900-1317J 31Chapter2ADCCP NRM Protocol SummaryProtogate’s ADCCP NRM interface product is based on the American National Stan-dard for Advanced Data

32 DC 900-1317JADCCP NRM Programmer’s GuideIn an unbalanced configuration (see Figure 2–1), the primary station transmits com-mands and the secondary

2: ADCCP NRM Protocol SummaryDC 900-1317J 332.2 Balanced ConfigurationsSome applications require two stations (one local and one remote) to exchange c

34 DC 900-1317JADCCP NRM Programmer’s Guidedefined. Although the configuration is symmetric, link communications may not be.The link between one prima

2: ADCCP NRM Protocol SummaryDC 900-1317J 35between the primary function in one combined station and the secondary function inthe other. Each dialog u

36 DC 900-1317JADCCP NRM Programmer’s Guide2.6 Operational StatesADCCP link operation procedures define three fundamental states: logically discon-nec

2: ADCCP NRM Protocol SummaryDC 900-1317J 37(or function) to issue a disconnect (DISC) command. This option isnot normally used in ARM or ABM operatio

38 DC 900-1317JADCCP NRM Programmer’s GuideOPTION 8 This option forbids the use of information response frames. Thisimplies that a secondary station c

2: ADCCP NRM Protocol SummaryDC 900-1317J 39Table 2–1: ADCCP Frame TypesInformation Transfer Format Commands/ResponsesI InformationSupervisory Format

4 DC 900-1317JADCCP NRM Programmer’s Guide2.7 Optional Functions ... 362.8 Summary of Frame Types...

40 DC 900-1317JADCCP NRM Programmer’s GuideFigure 2–4. The major areas of difference occur in the handling of polling, F-bitresponses, checkpoint retr

2: ADCCP NRM Protocol SummaryDC 900-1317J 41Because normal response mode (NRM) operation is usually used in a multidrop unbal-anced configuration, pri

42 DC 900-1317JADCCP NRM Programmer’s GuideF-bit checkpoint recovery occurs when the primary station receives a supervisory frameor I-frame with the F

DC 900-1317J 43Chapter3ADCCP NRM DLI FunctionsNoteIn this document, the term “Freeway” can mean either a Freewayserver or an embedded ICP. For the emb

44 DC 900-1317JADCCP NRM Programmer’s Guide• The various mnemonic codes mentioned throughout this document are definedin the include files provided wi

3: ADCCP NRM DLI FunctionsDC 900-1317J 45The Freeway server is normally configured only once, during the installation proce-dures described in the Fre

46 DC 900-1317JADCCP NRM Programmer’s Guideexchange, Normal and Raw operation can be mixed. The client application sessionshould be configured for No

3: ADCCP NRM DLI FunctionsDC 900-1317J 473.2 Example ADCCP NRM Call SequencesTa ble 3 –2 shows the sequence of DLI function calls to send and receive

48 DC 900-1317JADCCP NRM Programmer’s GuideNoteWhen using non-blocking I/O, a dlRead request must always bequeued to avoid loss of data or responses f

3: ADCCP NRM DLI FunctionsDC 900-1317J 493.3 Overview of DLI Functions for ADCCP NRMThis section summarizes the DLI functions used in writing a client

ContentsDC 900-1317J 53.4.21DLI_PROT_RECV_STATION_RESET Packet... 773.4.22DLI_PROT_SEND_STATION_RESET Packet... 773.4.23DLI_PROT_R

50 DC 900-1317JADCCP NRM Programmer’s GuideTable 3–4: DLI Functions: Syntax and Parameters (Listed in Typical Call Order)DLI Function Parameter(s) Par

3: ADCCP NRM DLI FunctionsDC 900-1317J 513.3.1 DLI Optional ArgumentsThe dlWrite and dlRead functions handle the control packets for an ADCCP NRM appl

52 DC 900-1317JADCCP NRM Programmer’s Guide3.4 Client/ICP Control Packet Formats The ADCCP NRM protocol software running on an ICP is controlled by a

3: ADCCP NRM DLI FunctionsDC 900-1317J 53Table 3–5: Client Packet dlWrite usProtCommand and iProtModifier Fields dlWrite usProtCommand Field dlWrite i

54 DC 900-1317JADCCP NRM Programmer’s GuideTable 3–6: ICP Packet dlRead usProtCommand and iProtModifier FieldsdlRead usProtCommand Field dlRead iProtM

3: ADCCP NRM DLI FunctionsDC 900-1317J 55The usProtXParms[0] field is used to specify the station ID. The station ID field is speci-fied in most contr

56 DC 900-1317JADCCP NRM Programmer’s GuideThe client uses this packet to change station operation to the initialization state. TheiProtModifier field

3: ADCCP NRM DLI FunctionsDC 900-1317J 57The ICP sends to the client a DLI_PROT_RECV_STATION_INIT packet with zero in theiProtModifier field following

58 DC 900-1317JADCCP NRM Programmer’s Guideon the ICP, an application in the client attempting to write a control packet to the ICPexperiences delayed

3: ADCCP NRM DLI FunctionsDC 900-1317J 59specify the usProtCommand field (DLI_PROT_SEND_EXCHANGE_ID), the usProtXParms[0] field(station ID), the usPro

6 DC 900-1317JADCCP NRM Programmer’s Guide5 ADCCP NRM Link Configuration Using dlicfg 995.1 Configuration Overview... 995.2 DL

60 DC 900-1317JADCCP NRM Programmer’s Guidestations unless the client has enabled ADCCP option 8 for the specified secondary sta-tion. The client must

3: ADCCP NRM DLI FunctionsDC 900-1317J 61the ICP uses selective broadcast addressing. If bit 1 is reset to zero and bit 2 is set to one,the ICP uses g

62 DC 900-1317JADCCP NRM Programmer’s Guidebroadcast addressing is indicated. If bit 1 is reset to zero and bit 2 is set to one, generalbroadcast addr

3: ADCCP NRM DLI FunctionsDC 900-1317J 63NRM secondary station and the station’s transmit window is still open, the ICP trans-mits the data in a respo

64 DC 900-1317JADCCP NRM Programmer’s Guideaddressing is indicated. If bit 1 is set to one and bit 2 is reset to zero, selective broadcastaddressing i

3: ADCCP NRM DLI FunctionsDC 900-1317J 65The client specifies the usProtCommand field (DLI_PROT_SEND_SET_MULTIPNT_LIST), the linkID, the usProtXParms[

66 DC 900-1317JADCCP NRM Programmer’s Guide• DLI_ICP_ERR_NO_ERR• DLI_ICP_ERR_XMIT_ABORTED• DLI_ICP_ERR_XMIT_TIMEOUTPacket type identifier codes that c

3: ADCCP NRM DLI FunctionsDC 900-1317J 673.4.16 DLI_PROT_SEND_BIND PacketThe client uses this packet to enable a physical link or to enable a station.

68 DC 900-1317JADCCP NRM Programmer’s GuideThe presence of the zeroed station ID tells the client that the control packet relates tothe physical link,

3: ADCCP NRM DLI FunctionsDC 900-1317J 69ful for temporarily stopping the link without terminating the session (for example, toreconfigure the link us

ContentsDC 900-1317J 7D.18station-reset-packet...150D.19station-reset-ack-packet...151D.20recv-sta

70 DC 900-1317JADCCP NRM Programmer’s Guide3.4.20.1 First VariantThe first variant of the DLI_PROT_CFG_LINK packet allows the client to configure a ph

3: ADCCP NRM DLI FunctionsDC 900-1317J 713.4.20.2 Second VariantThe second variant of the DLI_PROT_CFG_LINK packet allows the client to configure a st

72 DC 900-1317JADCCP NRM Programmer’s GuideusProtXParms[1] field (data size = 16), and the data area. The iProtModifier field valuemust be 1, which in

3: ADCCP NRM DLI FunctionsDC 900-1317J 73rate, round-trip propagation delay time (as in satellite data links), and data frame sizemust all be consider

74 DC 900-1317JADCCP NRM Programmer’s GuideThe loc_size variable specifies the length of the local station address. The rem_size vari-able specifies t

3: ADCCP NRM DLI FunctionsDC 900-1317J 75the final address octet must be set to one. This requirement ensures that the basic andextended address field

76 DC 900-1317JADCCP NRM Programmer’s GuideWord 2 in the data area contains the poll timer parameter value. This parameter is validonly for NRM second

3: ADCCP NRM DLI FunctionsDC 900-1317J 773.4.21 DLI_PROT_RECV_STATION_RESET PacketThe ICP uses this packet to report when an active station on the lin

78 DC 900-1317JADCCP NRM Programmer’s Guideremain unacknowledged and may have been lost in transit. The client is responsible forinitiating recovery p

3: ADCCP NRM DLI FunctionsDC 900-1317J 79A iProtModifier field value of one means that the indicated active NRM secondary sta-tion has received no pol

8 DC 900-1317JADCCP NRM Programmer’s Guide

80 DC 900-1317JADCCP NRM Programmer’s GuideThis packet contains the following counters:• Invalid address and control fields received• FCS errors • I-f

3: ADCCP NRM DLI FunctionsDC 900-1317J 81application. The ICP modifies the offending control packet to specify theusProtCommand field (DLI_PROT_RESP_E

82 DC 900-1317JADCCP NRM Programmer’s GuideIf your application must set the ICP message buffer size itself, you must set the cfgLinkand enable DLI con

3: ADCCP NRM DLI FunctionsDC 900-1317J 83in the usProtXParms[1] field, and ASCII text identifying the ICP software version in thedata area.

84 DC 900-1317JADCCP NRM Programmer’s Guide

DC 900-1317J 85Chapter4ADCCP NRM OperationsThis chapter describes some of the ADCCP NRM operations using the control packetsdescribed in Chapter 3. S

86 DC 900-1317JADCCP NRM Programmer’s GuideTo change the default maximum buffer size, the client sends a DLI_PROT_SET_BUF_SIZEpacket (see Section 3.4.

4: ADCCP NRM OperationsDC 900-1317J 87Before attempting to reconfigure a link that has already been configured, the clientmust ensure that the link is

88 DC 900-1317JADCCP NRM Programmer’s Guidelocal station address field length and content. The existence of the primary station isimplied; the client

4: ADCCP NRM OperationsDC 900-1317J 89The initialization state is supported only on stations configured to use ADCCP option5. A transition from the lo

DC 900-1317J 9List of FiguresFigure 1–1: Freeway Configuration... 22Figure 1–2: Embedded ICP Configuration...

90 DC 900-1317JADCCP NRM Programmer’s Guidelevel protocol transactions. The client transmits and receives frames as UnformattedData packets and is res

4: ADCCP NRM OperationsDC 900-1317J 914.1.5 Information Transfer State OperationOnce a station is in the information transfer state, data transfer is

92 DC 900-1317JADCCP NRM Programmer’s GuideUnformatted data cannot be exchanged in the information transfer state. If the clientattempts to send an Un

4: ADCCP NRM OperationsDC 900-1317J 934.2 User Application Design CriteriaThis section describes criteria to be considered when designing an applicati

94 DC 900-1317JADCCP NRM Programmer’s Guide4.2.2 More Data IndicatorIn normal response mode (NRM) operation, the primary station must intersperse poll

4: ADCCP NRM OperationsDC 900-1317J 95On the other hand, if a primary station only periodically polls its secondary stations andwithholds I-frame ackn

96 DC 900-1317JADCCP NRM Programmer’s Guide4.3.2 ICP Station Reset ConditionIf the client application receives an DLI_PROT_RECV_STATION_RESET packet,

4: ADCCP NRM OperationsDC 900-1317J 97This practice ensures that the sequence number variables for all secondary stationsreceiving a broadcast remain

98 DC 900-1317JADCCP NRM Programmer’s Guide

DC 900-1317J 99Chapter5ADCCP NRM Link Configuration Using dlicfgNoteIn this document, the term “Freeway” can mean either a Freewayserver or an embedde