JUMO DICON 400 - Default Chapter; Table of Contents

Contents
1 Introduction 5
1.1 Preface
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5
1.2 Typographical conventions
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6
1.2.1 Warning signs ................................................................................................. 6
1.2.2 Note signs ...................................................................................................... 6
1.2.3 Presentation ................................................................................................... 6
2 Protocol description 7
2.1 Master-slave principle
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7
2.2 Transfer mode (RTU)
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7
2.3 Instrument address
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8
2.4 Timing of the communication
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8
2.4.1 Timing of a data request .............................................................................. 10
2.4.2 Communication during the internal processing time of the slave ................ 11
2.4.3 Communication during the response time of the slave ............................... 11
2.5 Structure of the data blocks
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11
2.6 Error handling
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11
2.7 Checksum (CRC16)
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13
2.8 Interface
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14
3 Functions 15
3.1 Read n words
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15
3.2 Write 1 word
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16
3.3 Write n words
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17