[下载]MODBUS over Serial Line Specification & Implementation guide V1.0

cdcll

非常实用，特推荐给大家。
1 Introduction
1.1 Scope of this document
1.2 Protocol overview
1.3 Conventions
1.4 Compliance
1.5 Glossary
2 MODBUS Data Link Layer
2.1 MODBUS Master / Slaves protocol principle
2.2 MODBUS Addressing rules
2.3 MODBUS frame description
2.4 Master / Slaves State Diagrams
2.5 The two serial Transmission Modes
2.6 Error Checking Methods
3 Physical Layer
3.1 Preamble
3.2 Data Signaling Rates
3.3 Electrical Interfaces
3.4 Multipoint System requirements
3.5 Mechanical Interfaces
3.6 Cables
3.7 Visual Diagnosis
4 Installation and Documentation
4.1 Installation
4.2 User Guide
5 Implementation Classes
6 Appendix
6.1 Appendix A - Management of Serial Line Diagnostic Counters
6.2 Appendix B - LRC/CRC Generation
6.3 Appendix E - References

cdcll

英文版的。

xianren203

xiexie

hdy662

支持一下

hdy662

怎么下在的呀

hdy662

12

empwr

需要

andrew_xiao

在哪里下载阿？找不到链接阿。