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Table of Contents
Communications Installation .............................................................................................................92
Wiring Guidelines ..................................................................................................................................92
Ports 1 and 2 .................................................................................................................................92
Ports 1 and 2: RS-232 RJ-11 Jack and RS-485 Locations ..................................................92
Port 1: RS-232 RJ-11 Jack ..........................................................................................................93
Port 2: RS-485 ...............................................................................................................................93
Configuring Communication Ports (Parameters) ...........................................................................94
Modbus Register Map ............................................................................................................................97
Word Order (R40,062) ..........................................................................................................................98
Map ID (R40,063) ....................................................................................................................................98
Product ID (R40,064) ..............................................................................................................................99
Point Data (R41,010 – R41,031) ............................................................................................................99
Totalizer (R41,040 – R41,043) ................................................................................................................99
Input/Output (R41,070 – R41,143) .........................................................................................................99
Discrete Inputs (R41,070) .......................................................................................................100
Relay Outputs (R41,080) ........................................................................................................... 100
mA Input (R41,090) [MR 200] ..................................................................................................100
mA Output (R41,110-41,111) .....................................................................................................100
Pump Control (R41,400 – R41,474) ......................................................................................... 100
Pump ON Setpoint (R41,420 – R41,425) ................................................................................ 100
Pump OFF Setpoint (R41,430 – R41,435) ...............................................................................101
Pumped Volume (R41,440 – R41,443) [MR 200] ...................................................................101
Pump Hours (R41,450 – R41,461) ...........................................................................................101
Pump Starts (R41,470 – R41,475) ............................................................................................101
Parameter Access (R43,998 – R46,999) ............................................................................... 102
Parameter Indexing ................................................................................................................. 102
Indexing the Parameter Access Area....................................................................... 102
Reading Parameters ................................................................................................................ 103
Global Index Method (P782 = 0).................................................................................. 103
Parameter Specific Index Method (P782 = 1) ......................................................... 103
Writing Parameters .................................................................................................................. 104
Global Index Method (P782 = 0).................................................................................. 104
Parameter Specific Index Method (P782 = 1).......................................................... 104
Format Words (R46,000 to R46,999) ............................................................................................... 105
Global Index Method (P782 = 0) ............................................................................................ 105
Parameter-Specific Index Method (P782 = 1) .................................................................... 105
Format Registers ...................................................................................................................... 105
Data Types .................................................................................................................................................. 107
Numeric Values .................................................................................................................................. 107
Bit Values .............................................................................................................................................. 107
Unsigned Double Precision Integer (UINT32) ............................................................................ 107
Split Values .......................................................................................................................................... 108
Text Messages .................................................................................................................................... 109
Relay Function Codes (P111 Only) ..................................................................................................110
Error Handling ...........................................................................................................................................111
Modbus Responses ............................................................................................................................111
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