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OSI Layer Management

Appendix E

E-10

Attribute:

Set value

or range:

Settable:

Attrid

Description:

Claim tokens

counter of times a claim token is

successfully transmitted

____

Modem errors

counter of local physical errors from modem 19

____

Events

The MAC 802.4 issues an event to notify the NM Agent that it has
detected another station with the same MAC address.

Actions

There are no actions defined for the MAC 802.4 LME.

Содержание PLC-5 MAP/OSI

Страница 1: ...PLC 5 MAP OSI Software User Manual Cat No 1785 OSI AB Parts...

Страница 2: ...2 1 Non volatile Memory and the Lithium Battery 2 4 The LEDs 2 6 The Switches 2 7 MMS and Your OSI Coprocessor 3 1 Chapter Objectives 3 1 The Supported MMS Services 3 1 Mapping MMS Data Types onto PLC...

Страница 3: ...ecifying MMS Named Variable Scope Within UINFO 5 18 Mapping MMS Data Types onto PLC 5 40 5 60 File Types A 1 Appendix Contents A 1 Error Codes B 1 Protocol Implementation Conformance Statement PICS C...

Страница 4: ...Table of Contents iii OSI Layer Management E 1...

Страница 5: ...ta types onto PLC 5 controller data files including default data types Appendix A a list of the PLC 5 MAP OSI Software s error codes Appendix B the PLC 5 MAP OSI Coprocessor s PICS Protocol Implementa...

Страница 6: ...ley distributor or sales office for a current list of compatible controllers PLC 5 Programming Software 6200 PLC5 version 4 3 or higher PLC 5 802 4 MAP OSI Broadband Modem or PLC 5 802 4 MAP OSI Carri...

Страница 7: ...ABLE CONTROLLER PASS PASS MODE ACT BATT 802 4 STATUS RS 232 BATTERY INSTALLED D M Y OSI INTERFACE 802 4 INTERFACE M O D E M The Connector Header mates the PLC 5 controller to the OSI coprocessor The P...

Страница 8: ...tion usage instructions PLC 5 802 4 MAP OSI Coprocessor 1785 2 23 PLC 5 802 4 MAP OSI Broadband Modem 1785 2 12 PLC 5 802 4 MAP OSI Carrierband Modem 1785 2 20 PLC 5 Connector Header 1785 2 23 and 178...

Страница 9: ...u are already familiar with these topics you may want to proceed to Chapter 2 The Open Systems Interconnect OSI is a standard that provides the framework for defining the process of communication betw...

Страница 10: ...functionality 6 Presentation ensure information is delivered in a form the receiving system can understand and use 5 Session manage communications between two application processes 4 Transport transf...

Страница 11: ...nufacturing Automation Protocol MAP MAP is one set of OSI protocols Manufacturing Automation Protocol MAP is a set of protocols based on the OSI seven layer reference model described in the previous s...

Страница 12: ...facturing Message Specification MMS provides services directly visible to and used by the user MMS specifies a method for communicating with intelligent plant floor devices MMS is not an application p...

Страница 13: ...n MMS device when it makes resources i e data table memory program files available to other MMS devices Assume for example that an MMS device exists and it makes system data table memory available to...

Страница 14: ...he use of MMS services Note that the VMD model theoretically exists within an MMS device The MMS Abstract Object Models MMS also defines a series of abstract object models that describe the externally...

Страница 15: ...the program s associated with an MMS server variable objects Variable Access Services access data within the system associated with an MMS server 1Refer to the section titled Clients Servers and the V...

Страница 16: ...on string Named Types These are objects that pre define a data type template for use when accessing unnamed variables or defining named variables For example if a client has defined a template for an...

Страница 17: ...urces domain objects program invocation objects variable objects MMS Client MMS Server I 12414 Clients Servers the VMD Model and Your OSI Coprocessor Your OSI coprocessor has the ability to act as bot...

Страница 18: ...control or help to control the communication process These attributes include parameters statuses counters actions You can manipulate the values of many of the attributes Your OSI coprocessor is shipp...

Страница 19: ...Ds the switches This chapter does not cover installation instructions For installation procedures handling precautions and additional information on the OSI coprocessor refer to the PLC 5 802 4 MAP OS...

Страница 20: ...broadband or carrierband Modem PLC 5 40 5 60 Controller I 12416 The coprocessor is only half of the controller s connection to the network you also need a modem The type of modem depends upon the type...

Страница 21: ...tware via the MAP Station Manager 1785 OSI Software to OSI Network MAP Station Manager I 12417 Refer to the station manager s user manual publication 6630 6 5 2 for instructions on installing the soft...

Страница 22: ...ation and the configurable parameters are automatically stored in the OSI coprocessor s non volatile memory You have the option of also saving MMS objects through the station manager s Retain MMS Obje...

Страница 23: ...e lithium battery is related to the time it is in use when the power to the OSI coprocessor is removed so it is not possible to predict when you will need to replace it Generally we recommend that you...

Страница 24: ...in order to transition to fully operational mode red the coprocessor has a valid image and is in fully operational mode a diagnostic test failure has occurred If the coprocessor has faulted the pass f...

Страница 25: ...switches figure 2 5 Important Your OSI coprocessor is shipped with all of its switches in the OFF position If you need to change the switch settings you must do so before you install the OSI coprocess...

Страница 26: ...to specify whether or not the contents of non volatile memory will be erased cleared when the coprocessor is detached from the PLC 5 controller and reattached to a different controller Auto Clear Swit...

Страница 27: ...ich enables the execution of message instructions that perform MMS services within the local PLC 5 system Client and server To invoke the client side of the Initiate service an OPEN command is program...

Страница 28: ...f the Rename service is invoked when the OSI coprocessor receives a Rename request from another MMS device GetCapabilityList This is used by an MMS client to request that the OSI coprocessor return th...

Страница 29: ...the OSI coprocessor to clear the PLC 5 controller s memory it only deletes the object within the coprocessor The domain object must be deleted prior to downloading the PLC 5 controller This can be do...

Страница 30: ...es An MMS client uses this service to obtain a list of characteristics associated with the program invocation object within the OSI coprocessor This service is provided for client applications that ma...

Страница 31: ...r receives a GetNamedVariableListAttributes request DeleteNamed VariableList An MMS client uses this to delete a previously defined named variable list Note that this does not delete any memory within...

Страница 32: ...a type categories that your application programs can access The following list shows the PLC 5 controller s data tables you are allowed to access through your applications ASCII A Binary B Signed Word...

Страница 33: ...ecessary You can use both upper and lower case letters when mapping MMS data types onto PLC controller data files the use of a semi colon in place of a colon is also allowed ASCII A Mappings The follo...

Страница 34: ...table contains samples of mapping floating point data types Address MMS Data Type F8 0 FLOATING POINT F8 0 50 ARRAY of 50 FLOATING POINTS See the section titled Additional Information on Using Data Ty...

Страница 35: ...onal Information on Using Data Types later in this chapter and Appendix A of this manual for more information on mapping MMS data types onto PLC 5 data files Counter C Mappings The following is the fo...

Страница 36: ...ore information on mapping MMS data types onto PLC 5 data files Input Image I Mappings The table that follows provides sample mappings of input image data types where I 000 x n is a bit string of leng...

Страница 37: ...5 bits O 000 10 BOOLEAN O 001 3 5 BIT STRING 5 bits See the section titled Additional Information on Using Data Types later in this chapter and Appendix A of this manual for more information on mappin...

Страница 38: ...for more information on mapping MMS data types onto PLC 5 data files Control R Mappings The following is the format of a control structure as viewed by MMS BOOLEAN FD BOOLEAN IN BOOLEAN UL BOOLEAN ER...

Страница 39: ...section titled Additional Information on Using Data Types later in this chapter and Appendix A of this manual for more information on mapping MMS data types onto PLC 5 data files String ST Mappings T...

Страница 40: ...SPOR BOOLEAN INI FLOATING POINT SP FLOATING POINT KP FLOATING POINT KI FLOATING POINT KD FLOATING POINT BIAS FLOATING POINT MAXS FLOATING POINT MINS FLOATING POINT DB FLOATING POINT SO FLOATING POINT...

Страница 41: ...ATING POINTS applies to all other FLOATING POINT members PD10 0 ADDR OCTET STRING applies to DATA See the section titled Additional Information on Using Data Types later in this chapter and Appendix A...

Страница 42: ...o PLC 5 data files BCD Data D Mappings The following table provides samples of mapping BCD data types Address MMS Data Types D9 0 single BCD D9 0 10 ARRAY of 10 BCDs Alternate mappings are available s...

Страница 43: ...ta types onto PLC 5 data files Token Data TD Mappings The following is the format of a token data structure as viewed by MMS INTEGER HI SIZE 16 INTEGER LO SIZE 16 Important Refer to your PLC 5 Program...

Страница 44: ...tion is required To write BCD as an integer an MMS Type Specification is not required You must access the ASCII file as a fixed length VisibleString or OctetString The maximum length of the string is...

Страница 45: ...cts on a continuous basis If the Retain MMS Objects parameter is set to Then No MMS objects are not being saved Only default objects will exist if there is a power failure or reset Yes your MMS object...

Страница 46: ...e procedures are called Save MMS Objects to a File and Restore MMS Objects from a File See the MAP Station Manager user manual for instructions Important When you restore MMS objects from a file the O...

Страница 47: ...Chapter 3 MMS and Your Coprocessor 3 21 value 1 indicates the switch is ON and the value 0 indicates the switch is OFF You can read this variable using MMS services but you cannot write it AB Parts...

Страница 48: ...MMS services but you cannot write it This variable is the same as S 57 in the PLC 5 controller M_DAYTIME this named variable indicated the time of day and is of type generalized time This variable pro...

Страница 49: ...plication Then when MMS security is ON that remote MMS application has security level 0 minimum privilege and therefore has no access to the 16 MMS services security level 1 maximum privilege and ther...

Страница 50: ...Chapter 3 MMS and Your Coprocessor 3 24 Refer to the Allen Bradley MAP Station Manager user manual publication 6630 6 5 2 for instructions on setting MMS Security and setting Privileges...

Страница 51: ...w Before You Program A Quick Reference Guide to the Commands Managing Connections the OPEN CLOSE and ABORT Commands Defining MMS Named Variables the DEFVAR Command Deleting MMS Named Variables the DEL...

Страница 52: ...ible DOS Computer Allen Bradley T50 Terminal or I 12420 You enter the commands and qualifiers through the PLC 5 programming software cat no 6200 PLC5 version 4 3 or higher running on either an Allen B...

Страница 53: ...y PLC controllers using the PLC 5 programming software 1 Position the cursor on the rung display where you want to insert the message instruction 2 Press F10 the edit option A new set of options appea...

Страница 54: ...y times necessary until you see a screen like MESSAGE INSTRUCTION DATA ENTRY FOR COMMAND BLOCK MG9 30 Communication Command ASCII Port Number 3A Command Text BLOCK SIZE 56 WORDS Press a key to change...

Страница 55: ...MMS service functions for each command Command Related MMS Service Description OPEN Initiate Initiates a connection with a remote node CLOSE Conclude Concludes a connection that was opened with a rem...

Страница 56: ...s command is covered in detail in the section titled Defining MMS Named Variables later in this chapter There are rules for the using MMS named variables Both local and remote variables must be in sin...

Страница 57: ...Chapter 4 Basic Programming Techniques 4 7 For example B7 6 10 AB Parts...

Страница 58: ...o depends upon the device to which you are connecting If for example you are connecting to a device that supports only 2 outstanding messages per connection then you are limited to 2 for that connecti...

Страница 59: ...pter 4 Basic Programming Techniques 4 9 For detailed information on Refer to the sections located OPEN CLOSE ABORT DEFVAR DELVAR and SET later in this chapter UNINFO USTAT and MOVE in chapter 5 AB Par...

Страница 60: ...on_5 c4 parts SE T4 3 C100 STATION_6 Special Note When reading data the connection identifier directly preceeds the source When writing data the connection identifier directly preceeds the destination...

Страница 61: ...ror code Figure 4 5 Establishing a Connection with the OPEN Command another vendor s MAP device OSI Network Allen Bradley OSI Coprocessor open C1 to xx Programming terminal with 6200 software The OPEN...

Страница 62: ...and use upper or lower case letters application entity name the application entity AE name of the remote node with which you are establishing a connection You must match the AE name to an entry in the...

Страница 63: ...following table defines each part of the CLOSE command line This is CLOSE the command that gracefully terminates the connection You can abbreviate to one character upper or lower case Leave at least o...

Страница 64: ...tion for details The ABORT command has the following syntax ABORT connection The following table defines each part of the ABORT command line This is ABORT the command that abruptly terminates the conn...

Страница 65: ...ocessor operator and allows you to manage your local MMS named variables without having to open or close connections With connection zero you also avoid using any of the 16 connections available for e...

Страница 66: ...integer from 1 to 9999 remote_symbol the name you are assigning to the remote address This must be in single quotes and directly follow the connection identifier with no spaces between them TO the qu...

Страница 67: ...d line connection the communication link between two applications This is designated by the connection identifier C followed by an integer from 1 to 9999 This must directly follow the DELVAR command f...

Страница 68: ...ch part of this SET command line This Is SET the command that requests the data transfer The destination directly follows the SET command You can abbreviate to one character upper or lower case Leave...

Страница 69: ...ing Techniques 4 19 SET STATION_2 C6 STATION_9 the command the connection identifier followed by the number 6 the MMS named variable that is the destination the MMS named variable the assignment quali...

Страница 70: ...on is going to be placed This could be an MMS named variable in single quotes or an address in double quotes The location of the destination also includes a connection identifier C The destination alw...

Страница 71: ...ading and writing on connection zero as discussed in the two previous sections For example SET C0 MY_VARIABLE B7 6 As noted in the preceding section the placement of the connection identifier determin...

Страница 72: ...gh knowledge of the MMS protocol Refer to Chapter 4 of this manual for basic programming information You can send unsolicited variable status using the UINFO command This command has the following syn...

Страница 73: ...Addditional and Advanced Programming Techniques 5 2 Here are examples of using the UINFO command UINFO TEMPERATURE_4 TO C25 UI T4 0 ACC TO C601 The related MMS service for UINFO is InformationReport...

Страница 74: ...y an integer from 1 to 9999 Here are examples of using the USTAT command USTAT TO C33 US TO C9 The related MMS service for USTAT is UnsolicitedStatus Like the SET command the MOVE command transfers re...

Страница 75: ...o specify the source of the data transfer You can abbreviate to one character and use upper or lower case letters connection the communication link established between two points You label connections...

Страница 76: ...line FROM the qualifier that allows you to specify the source of the data transfer You can abbreviate to one character and use upper or lower case letters source the location where the requested infor...

Страница 77: ...rce directly following the FROM qualifier Here are more examples of using the MOVE command to write MO FR N15 90 TO C13 N16 1 move to c5 machine_19 fr hold_44 M T C78 N67 10 FROM WELDER_10 Using MOVE...

Страница 78: ...s can be an MMS named variable in single quotes or an address in double quotes MUST be a single bit boolean refer to Appendix A for more information on data types See Chapter 4 for details on the OPEN...

Страница 79: ...ween two points You label connections using the connection symbol C followed by an integer from 1 to 9999 remote_symbol the name you are assigning to the remote address This must be in single quotes a...

Страница 80: ...that in the command line we used the DTYPE parameter abbreviated as dt directly followed by an integer address The MMS protocol knows that we are requesting the data type for information going into a...

Страница 81: ...ble we will receive an error message right away If we had not used DTYPE here we would have had to use the MMS named variable within a MOVE command line before knowing the data type was unacceptable W...

Страница 82: ...cause VMD specific scope type we could have accomplished the same result if we had written the above command line as Since we did not specify a scope type MMS assumes VMD specific scope DEFVAR C8 BOX_...

Страница 83: ...is only supported by the OSI coprocessor as a client not a server You specify domain scope by placing domain followed by the domain name and another All of this precedes the MMS named variable and is...

Страница 84: ...AA scope will be accepted by server applications For example you can define delete MMS named variables with VMD specific and AA scope in the OSI coprocessor but not domain scope You can however define...

Страница 85: ...Domain variable scope is only supported by the OSI coprocessor as a client not a server Therefore you can specify all three domain types in client type applications but only VMD and AA scope will be a...

Страница 86: ...and Advanced Programming Techniques 5 15 SET PARTS C8 VMD BOX_1 The MMS named variable is BOX_1 and is in single quotes Here we are specifying VMD specific scope with VMD within slash marks and withi...

Страница 87: ...S named variable and within the single quotes You can enter AA in upper or lower case letters and abbreviate to one character The following example shows how to specify AA specific scope set C51 aa ti...

Страница 88: ...cific Scope Within the MOVE Command Line This is an example of specifying VMD specific scope MOVE TO PARTS FROM C8 VMD BOX_1 The MMS named variable is BOX_1 and is in single quotes Here we are specify...

Страница 89: ...e examples for specifying MMS named variables within the MOVE command line move from c11 robot_4 to aa robot_17 m t machine_67 f c8 dom P5 transfer_4 move f C90 vmd press_19 to aa press_1 When you are...

Страница 90: ...at is returned in the response to a GetVariableAccessAttributes service request on a variable in that field asterisks to indicate alternate data types supported for each PLC 5 40 5 60 file type number...

Страница 91: ...Mapping MMS Data Types onto PLC 5 40 5 60 File Types Appendix A A 2 T ACC D 16 AB Parts...

Страница 92: ...r Floating Point Visible String Octet String MMS Structure Counter C D C UN D C OV D C DN D C CD D C CU D C PRE D 16 C ACC D 16 Control R D R FD D R IN D R UL D R ER D R EM D R DN D R DU D R EN D R LE...

Страница 93: ...String Octet String MMS Structure PD OLL D PD SPOR D PD INI D PD SP D PD KP D PD KI D PD KD D PD BIAS D PD MAXS D PD MINS D PD DB D PD SO D PD MAXO D PD MINO D PD UPD D PD PV D PD ERR D PD OUT D PD PV...

Страница 94: ...tring Octet String MMS Structure MG NR D MG ERR D 16 MG RLEN D 16 MG DLEN D 16 MG DATA D 104 Block Transfer Control BT D BT RW D BT TO D BT NR D BT EW D BT CO D BT ER D BT DN D BT ST D BT EN D BT RLEN...

Страница 95: ...275 0113 Requested service not available on connection 0 or unable to delete named variable on connection 0 276 0114 No connection available all in use 277 0115 Connection unknown to local node or is...

Страница 96: ...MSG string 340 0154 Misplaced DTYPE keyword in MSG string 341 0155 Missing or misplaced type specification in MSG string 342 0156 Keyword in MSG string has too few characters 343 0157 MSG string synta...

Страница 97: ...tate of the remote object does not permit a response for this service from the remote node 399 018f PDU size is larger than the negotiated size at the remote node 400 0190 The remote node determined t...

Страница 98: ...e This is a permanent error for access to this variable 487 01e7 Cannot access the variable at the remote node due to a hardware fault 488 01e8 The requested variable is temporarily unavailable at the...

Страница 99: ...I Coprocessor The following table lists the implementation values for the your OSI coprocessor Implementation Information Value Implementation s vendor Name Allen Bradley Company Implementation s Mode...

Страница 100: ...mplementation does not fulfill the server or client requirements for the service or CBB then the column shall be left blank Service Conformance Building Blocks Server Client or Both Initiate Both Conc...

Страница 101: ...NamedVariableListAttributes Server DeleteNamedVariableList Server DefineNamedType Server GetNamedTypeAttributes Server DeleteNamedType Server Input Output TakeControl RelinquishControl DefineSemaphore...

Страница 102: ...al ReportJournalStatus ObtainFile FileOpen FileRead FileClose FileRename FileDelete FileDirectory The following table indicates what MMS Parameter Conformance Building Blocks are supported for the PLC...

Страница 103: ...ress formats for VADR horizontal CBB Symbolic see Note 5 Maximum input Time Out in seconds N A Level of support for time see Note 6 Granularity of time in milliseconds see Note 7 Uninterruptible acces...

Страница 104: ...CII address format see PLC 5 Programmable Controller Programming Reference Manual Note 6 The date and time of day are supported and maintained in the PLC 5 controller Access is through the MMS standar...

Страница 105: ...Hardware fault 27 MCP file does not exist or is not ladder or SFC 28 PII file does not exist or is not ladder 29 STI program does not exist or is not ladder 30 Fault program does not exist or is not...

Страница 106: ...13 201 Invalid image header in download data 514 202 Invalid file type in download data 515 203 Invalid data in program file of download data 516 204 Download data image too big for processor type Not...

Страница 107: ...There are four different categories of attributes parameters are variables that govern the operation of the module The parameters are given a certain value to control the communication process There a...

Страница 108: ...ver the OSI coprocessor s non volatile memory is re initialized user communication defaults You have the ability to edit the MAC layer and RS 232 port parameters via the Allen Bradley MAP Station Mana...

Страница 109: ...processor attempts to transition to after a system reset or powerup A value of OFF is interpreted as a command to Go Fully Operational A value of ON is interpreted as a command to Go Partially Operati...

Страница 110: ...mode Go Fully Operational Puts the OSI coprocessor into fully operation mode The following tables list the System Load parameters System Load Parameters Description LD Status Specifies whether or not...

Страница 111: ...ent will wait for a response from a server before it errors the message instruction and aborts the connection range 1 to 120 seconds default is 60 seconds MMS Number of Outgoing Connections Reserved N...

Страница 112: ...evel on the ACPM Reject Sent counter ACPM Abort Rcv Limit A threshold level on the ACPM Abort Received counter ACPM Abort Sent Limit A threshold level on the ACPM Abort Sent counter Assoc Pres Abort L...

Страница 113: ...number of presentation connection rejections received by this presentation entity due to permanent circumstances CPR Send Permanent Grp Count The number of presentation connection rejections sent by t...

Страница 114: ...ort Sent Protocol Error The number of times this session entity sent a S P ABORT request event with a reason indicating protocol errors Current session buffer usage This is a count of the number of bu...

Страница 115: ...t Congestion The number of times a connection request CR TPDU is refused due to congestion Conn Req Err Config Detected The number of transport connection rejections sent by this transport entity due...

Страница 116: ...DU Reassembly counter Checksum An integer that specifies the usage of the optional checksum in a NPDU header A value of 0 is interpreted as Checksum disabled A value of 1 is interpreted as Checksum en...

Страница 117: ...rs The number of Link Layer messages that could not be sent due to some form of error such as a CRC error Number of Rcv Buffer Overflows The number of received Link Layer messages that could not be ac...

Страница 118: ...ed on these group addresses to obtain the group address mask This mask is used to determine if a frame specifying a group address should be accepted by this node 1 09 00 2B 00 00 04 2 41 5F 42 49 50 4...

Страница 119: ...EE 802 4 CRC errors Number of tokens heard Number of detected tokens being passed Number of who follows query Number of times this station has had to look for a new successor Token pass failures Numbe...

Страница 120: ...he following table lists the RS 232 Port parameters for your OSI coprocessor RS 232 Parameters Possible Values Default Value Baud Rate 300 1200 2400 4800 9600 9600 Data Bits 7 or 8 8 Parity odd even o...

Страница 121: ...u can write to that attribute and a dash ____ in that column indicates you cannot write to it if you can write to an attribute the Set value or range column indicates the range of values to which you...

Страница 122: ...attrid 7 8 YES 0 64K ACPM Aborts Sent counter of aborts sent to the peer ACSE Protocol Machine ACPM 9 ____ ____ ACPM Aborts Sent Threshold threshold for above counter i e counter with attrid 9 10 YES...

Страница 123: ...text not supported or User data unreadable 5 ____ ____ APR PPDU received permanent group threshold threshold for above counter i e counter with attrid 5 6 ____ ____ APR PPDU sent permanent group count...

Страница 124: ...l version 5 ____ ____ Refused SPDU Sent Permanent Threshold threshold for above counter i e counter with attrid 5 6 YES 0 64K Refused SPDU Received Temporary counter of Session connect rejects receive...

Страница 125: ...imit Threshold threshold of above counter i e counter with attrid 7 8 YES 0 65 535 Connect Request Refused Configuration Error Limit counter of Transport connect rejects received due to a configuratio...

Страница 126: ...ld for above counter i e counter with attrid 21 22 YES 0 65 535 Window Time characteristic specifying max time passed be for Transport transmit updated window info 23 YES 0 65 535 TPDU Sent counter of...

Страница 127: ...e counter with attrid 6 7 YES 0 65 535 Discard NPDU Lifetime Exceeded counter of times NPDU is discarded due to lifetime expiration 8 ____ ____ Discard NPDU Lifetime Exceeded Limit threshold for above...

Страница 128: ...same NSAP address and quality of service are overwritten 2 Delete routing table entry s This action deletes one or more entries from the routing table The following table lists the LLC Type 1 Attribut...

Страница 129: ...al ring 6 YES See MAC spec Priority 2 token hold time characteristic specifying max time taken for a token of access class 2 to rotate around logical ring 7 YES See MAC spec Priority 0 token hold time...

Страница 130: ...of times a claim token is successfully transmitted 17 ____ ____ Modem errors counter of local physical errors from modem 19 ____ ____ Events The MAC 802 4 issues an event to notify the NM Agent that i...

Страница 131: ...utes D 1 actions definition of D 1 counters definition of D 1 for the ACSE layer D 6 for the LLC layer D 11 for the MAC layer D 12 for the MMS layer D 5 for the Network layer D 10 for the Presentation...

Страница 132: ...ructure mappings 3 15 output image mappings 3 11 PID structure mappings 3 14 sequential function chart status mappings 3 16 signed word mappings 3 8 status mappings 3 13 string mappings 3 13 timer map...

Страница 133: ...ualifiers 4 5 Quick reference guide to commands 4 8 R Reading Data using the MOVE command 5 3 using the SET command 4 18 Retaining MMS Objects 3 19 RS 232 Port Parameters D 14 S Scope application asso...

Страница 134: ...evice See VMD VMD Model 1 5 VMD Scope specifying in the DEFVAR command line 5 11 specifying in the DELVAR command line 5 13 specifying in the MOVE command line 5 14 specifying in the SET command line...

Страница 135: ...land The Netherlands Turkey United Arab Emirates United Kingdom United States Uruguay Venezuela Yugoslavia World Headquarters Allen Bradley 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 38...

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