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Table of Contents
Modbus Register Map ............................................................................................................................95
Word Order (R40,062) ..........................................................................................................................96
Map ID (R40,063) ....................................................................................................................................96
Product ID (R40,064) ..............................................................................................................................97
Point Data (R41,010 – R41,031) ............................................................................................................97
Totalizer (R41,040 – R41,043) ................................................................................................................97
Input/Output (R41,070 – R41,143) .........................................................................................................98
Discrete Inputs (R41,070) ..........................................................................................................98
Relay Outputs (R41,080) ..............................................................................................................98
mA Input (R41,090) [6 relay model] ..........................................................................................98
mA Output (R41,110-41,111) ........................................................................................................98
Pump Control (R41,400 – R41,474) ............................................................................................98
Pump ON Setpoint (R41,420 – R41,425) ...................................................................................98
Pump OFF Setpoint (R41,430 – R41,435) .................................................................................99
Pumped Volume (R41,440 – R41,443) [6 relay model] ..........................................................99
Pump Hours (R41,450 – R41,461) .............................................................................................99
Pump Starts (R41,470 – R41,475) ..............................................................................................99
Parameter Access (R43,998 – R46,999) ............................................................................... 100
Parameter Indexing ................................................................................................................. 100
Indexing the Parameter Access Area....................................................................... 100
Reading Parameters .................................................................................................................101
Global Index Method (P782 = 0).................................................................................. 101
Parameter Specific Index Method (P782 = 1) ......................................................... 102
Writing Parameters .................................................................................................................. 102
Global Index Method (P782 = 0).................................................................................. 102
Parameter Specific Index Method (P782 = 1).......................................................... 102
Format Words (R46,000 to R46,999) ............................................................................................... 103
Global Index Method (P782 = 0) ............................................................................................ 103
Parameter-Specific Index Method (P782 = 1) .................................................................... 103
Format Registers ...................................................................................................................... 103
Data Types .................................................................................................................................................. 105
Numeric Values .................................................................................................................................. 105
Bit Values .............................................................................................................................................. 105
Unsigned Double Precision Integer (UINT32) ............................................................................ 105
Split Values .......................................................................................................................................... 106
Text Messages .................................................................................................................................... 107
Relay Function Codes (P111 Only) ................................................................................................. 108
Error Handling .......................................................................................................................................... 109
Modbus Responses ........................................................................................................................... 109
Error Handling ..................................................................................................................................... 109
Communication Troubleshooting ...................................................................................................111
Generally ...............................................................................................................................................111
Specifically ............................................................................................................................................111
Communication Appendix A: Single Parameter Access (SPA) .....................................112
Mapping .................................................................................................................................................112
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