Bronkhorst Modbus slave interface Manual do Utilizador descarregar pdf (Página 3)

BRONKHORST®

Table of contents

1 GENERAL PRODUCT INFORMATION ................................................................................................. 4

1.1 INTRODUCTION ................................................................................................................................................ 4

1.2 MULTIBUS TYPES .............................................................................................................................................. 4

1.3 REFERENCES TO OTHER APPLICABLE DOCUMENTS ..................................................................................................... 5

1.3.1 Manuals and user guides: ........................................................................................................................... 5

1.3.2 Technical Drawings: .................................................................................................................................... 5

1.3.3 Software tooling: ........................................................................................................................................ 5

1.4 SHORT FORM START-UP ..................................................................................................................................... 6

2 FIELD BUS INSTALLATION ................................................................................................................. 7

2.1 GENERAL ........................................................................................................................................................ 7

2.2 MODBUS CONNECTOR ....................................................................................................................................... 7

2.2.1 Shielded RJ45 modular jack ......................................................................................................................... 7

2.2.2 Shielded a coded M12 connector ................................................................................................................ 8

2.3 MODBUS CABLES AND T-PARTS ........................................................................................................................... 9

2.3.1 RJ45 FTP cables ........................................................................................................................................... 9

2.3.2 M12 DeviceNet drop cables ...................................................................................................................... 10

2.4 TERMINATION ................................................................................................................................................11

2.4.1 Termination resistors ................................................................................................................................ 11

2.4.2 Biasing resistors ........................................................................................................................................ 11

3 CHANGING SLAVE ADDRESS AND BAUD RATE ................................................................................ 13

3.1 VIA ROTARY SWITCHES ON THE SIDE OF THE INSTRUMENT (IF PRESENT) ........................................................................13

3.2 VIA RS232: FLOWFIX ......................................................................................................................................13

3.3 VIA RS232: OTHER PROGRAMS ..........................................................................................................................14

3.4 VIA MICRO-SWITCH AND LED’S ON THE INSTRUMENT (IF PRESENT) .............................................................................14

3.4.1 Readout bus-address/MAC-ID and baud rate: .......................................................................................... 14

3.4.2 Change bus-address and baud rate: ......................................................................................................... 15

3.5 BY USER INTERFACE (IF PRESENT) ........................................................................................................................15

4 FUNCTIONAL DESCRIPTION ............................................................................................................ 16

4.1 GENERAL .......................................................................................................................................................16

4.2 IMPLEMENTATION CLASS ...................................................................................................................................16

4.3 RESPONSE TIME ..............................................................................................................................................17

4.4 SUPPORTED MODBUS FUNCTIONS .......................................................................................................................17

4.4.1 Read Holding Registers (03) ...................................................................................................................... 17

4.4.2 Write Single Register (06) ......................................................................................................................... 17

4.4.3 Write Multiple Registers (16) .................................................................................................................... 17

4.4.4 Diagnostics (08) ........................................................................................................................................ 18

4.4.5 Report Slave ID (17) .................................................................................................................................. 18

4.4.6 Available parameters ................................................................................................................................ 19

5 TROUBLESHOOTING ...................................................................................................................... 21

5.1 VISUAL DIAGNOSTICS .......................................................................................................................................21

5.2 STEP-BY-STEP .................................................................................................................................................21

5.3 BUS DIAGNOSTICS STRING .................................................................................................................................22

6 SERVICE ........................................................................................................................................ 23

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