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DPMS XPQ User Manual
This chapter mainly discusses how to handle the meter via the
communication port using software. To master this chapter, you should be
familiar with Modbus and have read the other chapters in this manual. Once you
have completed these steps you will have mastered the function and application
of this product.
This chapter includes: Modbus protocol, the format of communication and
data address tables and application details.
Introducing Modbus Protocol
The Modbus RTU protocol is used for communication in the DPMS XPQ.
The data format and error check methods are defined in the Modbus protocol.
The half duplex query and respond mode is adopted in the Modbus protocol.
There is only one master device in the communication net. The others are slave
devices, waiting for the query of the master.
Transmission mode
The mode of transmission defines the data structure within a frame and
the rules used to transmit data. The mode is defined in the following which is
compatible with Modbus RTU Mode*.
Coding System
8-bit binary
Start bit
1
Data bits
8
Parity
no parity
Stop bit
1
Error checking
CRC check
* Modbus is trademark of Modicon, Inc.
Содержание XPQ
Страница 1: ...POWER INSTRUMENTS DPMS XPQ Multi Function Power Meter User Manual 1087 332...
Страница 2: ......
Страница 7: ...Chapter 1 Introduction Purpose Application Area Functions DPMS XPQ Series 5...
Страница 13: ...Chapter 2 Installation Appearance and Dimensions Installation Method Wiring 11...
Страница 28: ...26 DPMS XPQ User Manual 2 3LN 3CT with 2 CTs Fig 2 19 3LN 3CT with 2 CTs 3 2LN 2CT Fig 2 20 2LN 2CT...
Страница 29: ...27 POWER INSTRUMENTS 4 2LN 1CT Fig 2 21 2LN 1CT 5 2LL 3CT Fig 2 22 2LN 3CT Acuvim X Fig 2 21 2LN 1CT...
Страница 30: ...28 DPMS XPQ User Manual 6 2LL 2CT Fig 2 23 2LL 2CT 7 2LL 1CT Fig 2 24 2LL 1CT...
Страница 59: ...Chapter 4 Function and Software Functionality and Utility Software 57...
Страница 68: ...66 DPMS XPQ User Manual Here is an example Fig 4 7 Demand Here is to set demand...
Страница 90: ...88 DPMS XPQ User Manual Fig 4 20 Voltage Eligibility Ratio...
Страница 126: ...124 DPMS XPQ User Manual...
Страница 127: ...125 Appendix Appendix A Technical Data and Specifications Appendix B Ordering Information...
Страница 133: ......