Sharp manual Expansion of network, Multiple installation of the JW-21MN

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9

9-3 Expansion of network

The JW-21MN can transmit data between 64 stations at maximum. If more than 64 stations are required for data link, you can add communication stations with the procedure below.

[1] Multiple installation of the JW-21MN

Mounting more than one JW-21MN on the basic rack panel of the JW20/JW20H/JW30H can increase the number of stations.

[In the case of mounting 4 sets of JW-21MN]

Master MasterMaster Master

Slave

０１	０２	０３	０４	０５	７３	７４	７５	７６	７７
					63 stations max.
Slave
０１	０２	０３	０４	０５	７３	７４	７５	７６	７７

63 stations max.

Slave

０１０２０３０４０５７２７３７４７５７６７７

63 stations max.

Slave

０１０２０３０４０５７２７３７４７５７６７７

63 stations max.

: Master station

: Slave station

Slave station number 01 to 77: octal

Remarks

-When installing multiple number of modules on a single PC, make them allocated so that relay link area, register link area, and flag area may not overlap with each other.

-When installing multiple number of modules on a single PC, pay attention to the total communica- tion data volume and the number of bytes available for communication area.

-Though more than one JW-21MN can be mounted on single basic rack panel, they cannot directly communicate with other stations beyond one network.

9-6

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Contents JW-21MN JW-21MN Wiring Compel Safety PrecautionsInstallation Maintenance Prohibit UseME-NET Module JW-21MN Table of contents Description for Computer Link Operation 10-1 to Setting of Switches and Parameter 11-1 toErrors and Countermeasures 12-1 to Appendix 16-1 to Support Tools 14-1 to Specifications 15-1 to13-1 Computer link function Features and FunctionsData link function Installation WiringConnector Static electricity MaintenanceTreatment Allocation of relay numberSystem Configuration JW20H JW-21MN JW-21MN JW30HName and Function of Each Part Front viewRemarks InstallationInstallation procedure Processing of Cables Name Model MakerProcessing cable end Removal of coating, external conductor, and insulator Fine adjustment of blade cutting depthCutting of coating, external conductor, and insulator Display of blade setting Processing of cable endRequired tools Hand-held crimping tool Connector crimping procedureConnector ME-GP-01 Processing procedure Insert a sleeve Crimping contactConductivity test Fixing the connectorInsulation test Relaying of trunk cables Wiring MethodCable trunk and branch lines Cable wiring procedure in control panel Page Straight connector Waterproof and insulation processing of connectorsBranch connector RemarksWiring of cables at outside control panels Check after wiringBranching method Station number of the additional stationReason Memory address map against JW20/JW20H Memory Address on the ME-NETMemory address for data links Memory address map against JW30H JW30H address ME-NET addressMemory addresses for computer links JW20/20H ME-NET address CapacityJW30H address ME-NET address Capacity Remarks Data link Standard function Description for Data Link OperationCommunication method Relay linkRegister link Setting item Set locationData link Save memory function Required transmission time and communication delay time Required transmission timeCommunication delay time Data transmission between master PC and slave PC An example of synchronized transfer by OUT instructionCase of mounting 4 sets of JW-21MN Multiple installation of the JW-21MNExpansion of network Hierarchical link Description for Computer Link Operation Basic commandsOptional commands Computer link functionBasic commands 10-2Communication format, basic pattern Optional commands10-3 Monitor TMR, CNT, and MD Write mode assignment None Communication formatRead free memory size 10-410-5 Reading PC modeSetting PC mode 10-6 Reading system memoryWriting system memory Reading date Setting dateWrite mode assignment 1 or Communication format 10-710-8 Setting timeReading time 10-9 Correct clock timeMonitor step status JW20/JW20H only Set the optional parameters Write mode assignmentRead the optional parameters 10-1010-11 Read the special I/O parametersSet the special I/O parameters 10-12 Release the secret function, register password JW30H onlySet the secret function JW30H only Check the secret function JW30H only 10-13Response on error 10-1411-1 Setting of Switches and ParameterOperation procedure Module No. switch Unit no Switch setting of master station and slave stationMode switch Mode 11-211-3 Station number switch STA noTermination resistance switch LT Reference Need for the termination resistanceShield ground switch LG 11-4Setting contents of master station parameters 11-6 Value HCommunication area map Parameter for setting in master stationParameter for setting in slave station 11-711-8 + ｈ 11-9Maser station Slave station Standard Save memory Example for setting11-10 When master station PC is JW20/JW20H 11-11When master station PC is JW30H 11-12Setting procedure 11-13Stop operation of data link HEX hexadecimal, byte 11-14Example Stop operation of data link HEX hexadecimal, byte 11-15 Data link function setting HEX hexadecimal, byteSet number of connecting stations DCM decimal, byte 11-16 Set top address of register link area on the master station11-17 Set in parameter addresses 005000 to11-18 11-19 Set connection status of slave station Bit pattern, byte11-20 11-21 PC operation11-22 Setting itemContents When PC is JW30H Setting range of flag areaWhen PC is JW20/JW20H 11-2311-24 Turn on the power of slave station PC Connect support tools 11-2511-26 11-27 11-28 12-1 Errors and CountermeasuresIndication lamps Details MeasureFlag RemarkCommunication monitor flag Case of a master station12-3 Operation condition monitor flagCase of slave station 01 to 12-4Monitor operation condition by each station PC 12-5Storage of error code 12-6System memory #150 monitor error switch number System memory #170 to 177 option module error codeSystem memory #160 to 167 self diagnosis error code 12-7Error history 12-8Replacement of the JW-21MN 13-114-1 Support ToolsRecord and load by ladder software JW-92SP, JW-50SP Record Load to the personal computer Load14-2 Stop operation of the JW-21MNCommunication specifications SpecificationsGeneral specifications SpecificationSave memory function Specifications Data link specificationsStandard function Specifications 15-215-3 Computer link specificationsOutside dimensional drawings 16-1 Maintenance and checkAppendix 16-2 Recovery method at communication errorsCheck flow chart Check cable/connector 16-316-4 Cause Countermeasure16-5 007764 to16-6 Switches required check in the JW-21MNCheck items of cables and connectors Other casesWhen identification of the cause is difficult Check the errors timingIdentify the error station 16-7Master station Table of parameter memory16-8 Set contents Setting method value, example 16-916-10 16-11 16-12 Slave station 01 toRemote programming and remote monitor Special functions unique to the JW-21MN16-13 Support tool Opposite module Connection moduleExpansion network connection 16-14Function Standard network connection Operation exampleNetwork setting 16-1516-16 Parameter setting by remote functionWhen used with a computer link Alphabetical Index Operation procedure Waterproof and insulation processing of connectors