Hitachi 902 - SYSTEM INTERFACE; Overview; Communication Functions; Data Transmission Control Procedure

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16. SYSTEM INTERFACE
16.1 Overview................................................................................................................16-1
16.2 Communications Functions....................................................................................16-4
16.3 Frames...................................................................................................................16-7
16.4 Data Transmission Control Procedure ...................................................................16-9
16.4.1 Establishment of Data Link ....................................................................16-9
16.4.2 Response to Information........................................................................16-9
16.4.3 Response to Information Message.........................................................16-10
16.4.4 Termination and Restart of Communication...........................................16-16
16.4.5 Priority....................................................................................................16-17
16.4.6 RESULT ONLY Mode ............................................................................16-17
16.4.7 Retry of Communication.........................................................................16-18
16.5 Status Transition....................................................................................................16-19
16.5.1 Status Transition Matrix (only in mon-transfer of analytical data alone).16-19
16.5.2 Status Transition Matrix (in transfer of analytical data alone).................16-21
16.5.3 Status Transition Diagramm (analytical data).........................................16-23
16.6 Text Configuration Table........................................................................................16-24
16.6.1 Composition of Each Text......................................................................16-25
16.6.2 Contents of Text.....................................................................................16-38
16.7 Error Check Function ................................................................................................16-42
16.8 Specification of Communication Trace...................................................................16-43
16.8.1 Overview ................................................................................................16-43
16.8.2 Trace Data .............................................................................................16-43
16.8.3 Trace Data Storage Timing....................................................................16-43
16.8.4 Resetting of Trace Data .........................................................................16-44
16.8.5 Trace Data Storage Capacity.................................................................16-44
16.8.6 Other......................................................................................................16-44
16.9 Hardware Specifications ........................................................................................16-44
16.9.1 Overview................................................................................................16-44
16.9.2 RSDIST PC Board .................................................................................16-45
16.9.3 Interface Signal......................................................................................16-47
16.9.4 RS-232C Comunication .........................................................................16-48
16.9.5 Current Loop ..........................................................................................16-50
16.9.6 Communicator Monitor...........................................................................16-50
16.9.7 Data Alarm Code List.............................................................................16-51