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Automatic control function programming manual ladder language

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Exchanges by Protocol<br />

15 Exchanges by Protocol<br />

15.1 General Description of Exchanges 15 - 3<br />

15.1.1 General Description of the DNC1000<br />

Protocol 15 - 4<br />

15.1.2 DNC1000 Exchange Mechanism 15 - 5<br />

15.1.2.1 Request Processing Procedure 15 - 5<br />

15.1.2.2 Concept of Port 15 - 6<br />

15.2 Objects Accessible by a UNITE Request 15 - 7<br />

15.2.1 List of Object Type Requests Processed<br />

by the CNC Processor 15 - 7<br />

15.2.2 Object Constituents 15 - 9<br />

15.2.3 Programme Status Segments 15 - 14<br />

15.3 UNITE Requests Processed by the CNC Function 15 - 16<br />

13.3.1 «READ-OBJECT» Request 15 - 16<br />

15.3.2 «WRITE-OBJECT» Request 15 - 18<br />

15.3.3 «DELETE-FILE» Request 15 - 19<br />

15.3.4 «READ-MEMORY-FREE» Request 15 - 20<br />

15.3.5 «OPEN-DIRECTORY» Request 15 - 21<br />

15.3.6 «DIRECTORY» Request 15 - 22<br />

15.3.7 «CLOSE-DIRECTORY» Request 15 - 24<br />

15.3.8 «READ-BLOCK» Request 15 - 25<br />

15.3.9 «WRITE-BLOCK» Request 15 - 26<br />

15.3.10 «RESERVE-MEMORY» Request 15 - 27<br />

15.3.11 «MESSAGE READ» Request 15 - 28<br />

15.4 Programming the General Request Function 15 - 29<br />

15.4.1 Send a Request unito 15 - 29<br />

15.4.2 Read an Answer uniti 15 - 30<br />

15.4.3 Programming Rules 15 - 32<br />

15.5 Exchanges With a Remote Station 15 - 34<br />

15.5.1 Send a Request neto 15 - 34<br />

15.5.2 Read an Answer neti 15 - 36<br />

15.5.3 Examples of Series 7 Addressing 15 - 38<br />

15.5.4 Setting up the Common<br />

Word Service setcomw 15 - 39<br />

15.5.5 Answer to the STATU<br />

Request netst_ad 15 - 40<br />

en-938846/4 15 - 1<br />

15

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