Recovery method at communication errors, 16-2 | Sharp JW-21MN

16-2 Recovery method at communication errors

(1) Check flow chart

Occurrence of error

Connection status of cable/connector are normal.

YES

First communication?

NO

Does the error occur continuously?

YES

See "When the communication error occurs continuously" on page 16- 7.

NO See "Check cable/connector" on next page.

YES See "During initial communica- tion" on page 16-5.

See "When the communication NO error occurs instantaneously "

on page 16-7.

16

Recovery	YES
Recovery	Normal operation
NO

16-2

Image 97

Sharp JW-21MN manual Recovery method at communication errors, 16-2, Check flow chart

Contents

JW-21MN JW-21MN Installation Safety PrecautionsWiring Compel Use Maintenance Prohibit ME-NET Module JW-21MN Table of contents Errors and Countermeasures 12-1 to Setting of Switches and Parameter 11-1 toDescription for Computer Link Operation 10-1 to 13-1 Support Tools 14-1 to Specifications 15-1 toAppendix 16-1 to Data link function Features and FunctionsComputer link function Wiring Installation Connector Treatment MaintenanceStatic electricity Allocation of relay number JW20H JW-21MN JW-21MN JW30H System Configuration Front view Name and Function of Each Part Installation procedure InstallationRemarks Name Model Maker Processing of Cables Processing cable end Cutting of coating, external conductor, and insulator Fine adjustment of blade cutting depthRemoval of coating, external conductor, and insulator Processing of cable end Display of blade setting Connector ME-GP-01 Processing procedure Insert a sleeve Connector crimping procedureRequired tools Hand-held crimping tool Crimping contact Insulation test Fixing the connectorConductivity test Cable trunk and branch lines Wiring MethodRelaying of trunk cables Cable wiring procedure in control panel Page Branch connector Waterproof and insulation processing of connectorsStraight connector Remarks Check after wiring Wiring of cables at outside control panels Station number of the additional station Branching method Reason Memory address for data links Memory Address on the ME-NETMemory address map against JW20/JW20H JW30H address ME-NET address Memory address map against JW30H JW20/20H ME-NET address Capacity Memory addresses for computer links JW30H address ME-NET address Capacity Remarks Communication method Description for Data Link OperationData link Standard function Relay link Data link Save memory function Setting item Set locationRegister link Required transmission time Required transmission time and communication delay time Communication delay time An example of synchronized transfer by OUT instruction Data transmission between master PC and slave PC Expansion of network Multiple installation of the JW-21MNCase of mounting 4 sets of JW-21MN Hierarchical link Optional commands Basic commandsDescription for Computer Link Operation Computer link function 10-2 Basic commands 10-3 Optional commandsCommunication format, basic pattern Read free memory size Write mode assignment None Communication formatMonitor TMR, CNT, and MD 10-4 Setting PC mode Reading PC mode10-5 Writing system memory Reading system memory10-6 Write mode assignment 1 or Communication format Setting dateReading date 10-7 Reading time Setting time10-8 Monitor step status JW20/JW20H only Correct clock time10-9 Read the optional parameters Write mode assignmentSet the optional parameters 10-10 Set the special I/O parameters Read the special I/O parameters10-11 Set the secret function JW30H only Release the secret function, register password JW30H only10-12 10-13 Check the secret function JW30H only 10-14 Response on error Operation procedure Setting of Switches and Parameter11-1 Mode switch Mode Switch setting of master station and slave stationModule No. switch Unit no 11-2 Termination resistance switch LT Station number switch STA no11-3 Reference Need for the termination resistance 11-4 Shield ground switch LG Setting contents of master station parameters Value H 11-6 Parameter for setting in slave station Parameter for setting in master stationCommunication area map 11-7 11-8 11-9 + ｈ 11-10 Example for settingMaser station Slave station Standard Save memory 11-11 When master station PC is JW20/JW20H 11-12 When master station PC is JW30H 11-13 Setting procedure Example Stop operation of data link HEX hexadecimal, byte 11-14Stop operation of data link HEX hexadecimal, byte Set number of connecting stations DCM decimal, byte Data link function setting HEX hexadecimal, byte11-15 Set top address of register link area on the master station 11-16 Set in parameter addresses 005000 to 11-17 11-18 Set connection status of slave station Bit pattern, byte 11-19 11-20 PC operation 11-21 Contents Setting item11-22 When PC is JW20/JW20H Setting range of flag areaWhen PC is JW30H 11-23 11-24 11-25 Turn on the power of slave station PC Connect support tools 11-26 11-27 11-28 Indication lamps Errors and Countermeasures12-1 Details Measure Remark Flag 12-3 Case of a master stationCommunication monitor flag Operation condition monitor flag 12-4 Case of slave station 01 to 12-5 Monitor operation condition by each station PC 12-6 Storage of error code System memory #160 to 167 self diagnosis error code System memory #170 to 177 option module error codeSystem memory #150 monitor error switch number 12-7 12-8 Error history 13-1 Replacement of the JW-21MN Record and load by ladder software JW-92SP, JW-50SP Record Support Tools14-1 14-2 LoadLoad to the personal computer Stop operation of the JW-21MN General specifications SpecificationsCommunication specifications Specification Standard function Specifications Data link specificationsSave memory function Specifications 15-2 Outside dimensional drawings Computer link specifications15-3 Appendix Maintenance and check16-1 Check flow chart Recovery method at communication errors16-2 16-3 Check cable/connector Cause Countermeasure 16-4 007764 to 16-5 Check items of cables and connectors Switches required check in the JW-21MN16-6 Other cases Identify the error station Check the errors timingWhen identification of the cause is difficult 16-7 16-8 Table of parameter memoryMaster station 16-9 Set contents Setting method value, example 16-10 16-11 Slave station 01 to 16-12 16-13 Special functions unique to the JW-21MNRemote programming and remote monitor Support tool Opposite module Connection module Function Standard network connection 16-14Expansion network connection Operation example 16-15 Network setting When used with a computer link Parameter setting by remote function16-16 Alphabetical Index Operation procedure Waterproof and insulation processing of connectors