Laurel-electronics Modbus Protocol For Series 2 Laureate Digital Pane Manuale Utente Scaricare il pdf (Pagina 2)

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1. TABLE OF CONTENTS

1. TABLE OF CONTENTS ....................................................................................................... 2

2. INTRODUCTION, MODBUS PROTOCOL............................................................................ 3

3. MODBUS CONNECTION EXAMPLES................................................................................. 4

4. JUMPER SETTINGS & FIELD WIRING .............................................................................. 5

5. PROGRAMMING YOUR MODBUS DEVICE........................................................................ 9

6. MODBUS PROTOCOL IMPLEMENTATION ........................................................................ 10

1. General .................................................................................................................. 10

2. Framing.................................................................................................................. 10

3. Electrical Interface ................................................................................................. 11

4. Parameters Selectable via Instrument Setup (IS) Software ................................... 11

5. Parameters Selectable via Front Panel Meter Setup............................................... 11

6. Supported Function Codes .................................................................................... 11

7. Register Numbers vs. Meter Addresses................................................................. 11

8. Supported Exception Response Codes .................................................................. 14

9. Message Formatting .............................................................................................. 14

10. Message Examples for Device Address= 01, No Parity.......................................... 15

11. Data Types Internal Registers ................................................................................ 16

12. DPM & Analog Input Transmitter Internal Register Addresses ............................. 17

13. Counter / Timer Internal Register Addresses ......................................................... 23

7. WARRANTY ...................................................................................................................... 32

1 2 3 4 5 6 7 ... 31 32

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Laurel-electronics Modbus Protocol For Series 2 Laureate Digital Pane Manuale Utente Pagina 2