Basler-electric BE1-700 Modbus Protocol Manual do Utilizador descarregar pdf (Página 9)

9376700991 Rev D BE1-700 Modbus™ Protocol i

SECTION 1 • GENERAL INFORMATION

TABLE OF CONTENTS

SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1

Introduction ............................................................................................................................................ 1-1

Message Structure ............................................................................................................................. 1-1

Modbus™ Modes of Operation ............................................................................................................... 1-2

Modbus™ RTU .................................................................................................................................... 1-2

Modbus/TCP ...................................................................................................................................... 1-3

Communications Hardware Requirements .......................................................................................... 1-10

RTU Communication Requirements ................................................................................................ 1-10

TCP Communication Requirements ................................................................................................. 1-10

Detailed Message Query and Response ............................................................................................. 1-10

Read Holding Registers ................................................................................................................... 1-10

Return Query Data ........................................................................................................................... 1-11

Restart Communications Option ...................................................................................................... 1-11

Listen Only Mode ............................................................................................................................. 1-11

Preset Multiple Registers ................................................................................................................. 1-12

Preset Single Register (Write Single Holding Register) ................................................................... 1-13

Data Formats ....................................................................................................................................... 1-13

Floating Point Data Format (FP) ...................................................................................................... 1-13

Long Integer Data Format (LI) .......................................................................................................... 1-14

Integer Data Format (INT) ................................................................................................................ 1-14

Short Integer Data Format (SI) ......................................................................................................... 1-14

ASCII String Data Format (ASC(x)) ................................................................................................. 1-14

Bit Mapped Data Format (BM(x)) ..................................................................................................... 1-15

CRC Error Check ............................................................................................................................. 1-15

Session Access Registers ................................................................................................................ 1-15

Template Registers .......................................................................................................................... 1-16

Fault Summary Registers ................................................................................................................. 1-16

Report Generation Registers ........................................................................................................... 1-17

Contiguous Poll Block Registers ...................................................................................................... 1-17

Exception Code Enhancement Registers ........................................................................................ 1-17

Figures

Figure 1-1. Basler Modbus/TCP Device Discovery Screen ...................................................................... 1-4

Figure 1-2. DOS Configuration Utility Screen - Login

................................................................................ 1-4

Figure 1-3. DOS Configuration Utility Screen - Password

......................................................................... 1-5

Figure 1-4. DOS Configuration Utility Screen – Enable DHCP Client

....................................................... 1-5

Figure 1-5. DOS Configuration Utility Screen – Don’t Enable DHCP Client

............................................. 1-6

Figure 1-6. DOS Configuration Utility Screen – Enter IP Address

............................................................ 1-6

Figure 1-7. DOS Configuration Utility Screen – Enter Subnet Mask

......................................................... 1-6

Figure 1-8. DOS Configuration Utility Screen – Enter Default Gateway

................................................... 1-7

Figure 1-9. DOS Configuration Utility Screen – Return to Main Menu

...................................................... 1-7

Figure 1-10. DOS Configuration Utility Screen – Enable DHCP Client

..................................................... 1-8

Figure 1-11. DOS Command Shell

............................................................................................................ 1-9

Figure 1-12. DOS Command Example with DHCP Server

....................................................................... 1-9

Figure 1-13. DOS Command Example without DHCP Server

.................................................................. 1-9

Figure 1-14. DOS Command Example of Default IP Address Detected

................................................. 1-10

Tables

Table 1-1. Timing Considerations .............................................................................................................. 1-3

Table 1-2. Supported Exception Response Codes

................................................................................... 1-3

Table 1-3. Floating Point Format

............................................................................................................. 1-13

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 91 92

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Basler-electric BE1-700 Modbus Protocol Manual do Utilizador Página 9

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