Toshiba S20LP instruction manual Data linkage example

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6 F 3 B 0 3 5 6

3.4 Data linkage example

STN #1

STN #2

STN #3

T3H

S20 -LP

I/O

T2N S20 -LP

I/O

T2N S20 -LP

I/O

W000

W0199

W0200

W0249

W0250

W0299

W0300

W2047

common

memory

(2k words)

Send

Receive

Receive

No use

No use

Receive

Send

No use

No use

No use

Receive

No use

Send

No use

No use

Link register (W) can not use Common memory over 2048 words.

STN #1 T3H sends 200 words data (W0000 to W0199) to STN #2 and #3 T2Ns. STN #2 T2N sends 50 words data (W0200 to W0249) to STN #1 T3H.

STN #3 T2N sends 50 words data (W0250 to W0299) to STN #1 T3H.

⎯ 27 ⎯

Image 28

Contents T2N/T3H stations Important Information Preface Contents System configuration Introduction to S20LP∙ Overview Station hardwareT2N include of S20LP Port SN325 SN325S20LP port for T2N PU245N ∙ Status LEDsFor SN325 ∙ Station number setting switches ∙ Transmission cable connectors∙ Reset switch only SN325 ∙ Loader portLS overview Menu⎯ 10 ⎯ S20LP system specifications SpecificationsS20LP-station specifications Scan transmission overview Setting the data send block by S-LS Allocation and network assignment by T-PDSStation number setting Setting for data linkageSettings on T-PDS Link PDS screen example Block Send Receive ⎯ 18 ⎯ Global ⎯ 20 ⎯ Settings on S-LS ⎯ 22 ⎯ ⎯ 23 ⎯ ⎯ 24 ⎯ ∙ Scan Access ∙ Start with Standby mode∙ Scan Transmission ∙ Message Transmission∙ Target Scan Time Data linkage example ∙ Settings on T-PDS Setting on S-LS LS setting screen 2 for STN #2 Cable connections RAS function Behavior in trouble∙ Station down ∙ Transmission cable breakageAt initialization at power on Self-diagnostic functionDuring operation SN325 LED indicationT2N RAS information monitored in T2N/T3H Station status Online mapStandby map Loop map Only T2NRAS information monitored on S-LS Number 1-64 on the screen shows the Station numberSelf Station Station No.01 Offline Select the Station Number Click the Status Display Possible error message are as follows Station down informationInstruction Specification Expanded data transfer instructionInstruction format FunctionParameter and construction Transfer parameter tableSample program ∙ OperationRemarks Message transmission Message transmissionComputer link protocol PC link protocol∙ Send Transfer parameters a CMDStatus B TermSTS Status Meaning Detailed Information Send completion status PC link protocol transmission Data write Transfer parametersRID Status See 7.3 5 for details on bits C, D, E, and F Important itemsXW/YW PC link protocol transmission Data read ⎯ 57 ⎯ SW067 Write enabled PC link protocol transmission program RemarksLength END Appendix Scan cycle⎯ 63 ⎯ PDS remote programming PDS Setup options screen