Справочник Пользователя для Seahawks Post LDRA6
Table of Contents
User Guide: LDRA6
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ii
Appendix A: Modbus Communications ..................................................................................................................... 16
A-1
Modbus Implementation of the LDRA6....................................................................................................... 16
A-1.1
Modes of Transmission ..................................................................................................................... 16
A-1.1.1
Slave Address Field ................................................................................................................ 16
A-1.1.2
Function Field ......................................................................................................................... 16
A-1.1.3
Data Field................................................................................................................................ 16
A-1.1.4
Error Check Field.................................................................................................................... 16
A-2
Packet Communications for the LDRA6...................................................................................................... 17
A-2.1
Read Output Registers ....................................................................................................................... 17
A-2.2
Read Input Registers.......................................................................................................................... 18
A-2.3
Present Single Register...................................................................................................................... 19
A-2.4
Present Multiple Registers................................................................................................................. 19
A-3
RTU Framing ............................................................................................................................................... 20
A-4
Modbus Mirroring ........................................................................................................................................ 21
Appendix B: Troubleshooting .................................................................................................................................... 22
Appendix C: Technical Specifications........................................................................................................................ 23