v
DENT
Instruments
PowerScout 24
Table of Contents
All Things Modbus ............................................................................................................ 60
Device Registers ...................................................................................................................... 60
Configuration Registers ........................................................................................................... 60
Pulse Output/Input Registers .................................................................................................. 62
Absolute Measurement Registers ........................................................................................... 64
Positive Power/Energy Measurement Registers ..................................................................... 67
Negative Power/Energy Measurement Registers ................................................................... 72
Net Measurement Registers ................................................................................................... 76
Protocol Commands ................................................................................................................ 78
Read Holding Registers ..................................................................................................... 78
Write Single Register ......................................................................................................... 80
Report Slave ID .................................................................................................................. 81
All Things BACnet ............................................................................................................. 82
Meter Specific Objects ............................................................................................................ 82
Configuration Objects .............................................................................................................. 83
Pulse Output/Input Objects .................................................................................................... 85
Absolute/Net Value Measurement Objects ............................................................................ 86
Positive Power/Energy Measurement Objects ....................................................................... 89
Negative Power/Energy Measurement Objects ...................................................................... 90
Appendices ...................................................................................................................... 91
Appendix A—Connecting Multiple PowerScouts to an RS-485 Network ...................................... 91
Communication Protocol......................................................................................................... 91
Daisy Chain Layout for RS-485 Network .................................................................................. 91
Networking Using the BACnet MS/TP/Modbus RTU Protocol ................................................ 91
Appendix B—VERIS H8035/H8036 Emulation ............................................................................... 92
VERIS Modbus Integer Registers ............................................................................................. 93
VERIS Multipliers ..................................................................................................................... 94
VERIS Modbus Floating Point Registers .................................................................................. 96
Appendix C—Conversion Table...................................................................................................... 99
Decimal to Hexadecimal Conversion Table ............................................................................. 99
Appendix D—Troubleshooting..................................................................................................... 101
Troubleshooting Communication Issues ............................................................................... 101
Baud Rate Communications Error (RS-485 only) ............................................................ 101
Port Error ........................................................................................................................ 101
Firmware Update Fails .................................................................................................... 101
Other Communication Failures (RS-485 only) ................................................................ 102
Appendix E—Meter Installation Final Checklist ........................................................................... 103
Frequently Asked Questions ........................................................................................... 106
Glossary ......................................................................................................................... 108
Index ............................................................................................................................. 110
