Modbus Protocol for ION 7500, ION 7600 and ION 8000 series

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Modbus Register Configuration (Modbus Slave Module) Modbus Register MapSETUP REGISTERMODBUS REGISTER(S)MSR9 Format 45200MSR9 BaseAddr 49923 to 49924MSR9 Scaling 45206MSR9 InFull 49947 to 49948MSR9 InZero 49935 to 49936MSR9 OutFull 49971 to 49972MSR9 OutZero 49959 to 49960MSR10 Format 45201MSR10 BaseAddr 49925 to 49926MSR10 Scaling 45207MSR10 InFull 49949 to 49950MSR10 InZero 49937 to 49938MSR10 OutFull 49973 to 49974MSR10 OutZero 49961 to 49962FormatAs described in section Modbus Slave Module Output Registers of this document,the Modbus Slave Modules can export ION data to Modbus Holding registers in avariety of formats. These formats are selectable via the Format setup register of theModbus Slave Module. The following values are valid Format selections:0 = Unsigned 16B1 = Signed 16B2 = Unsigned 32B3 = Signed 32B4 = Unsigned 32B-M10K5 = Signed 32B-M10K6 = Packed BooleanBaseAddrThe BaseAddr setup register defines the starting Modbus register address to whichthe Modbus Slave Module exports ION data. The valid range for this setupregister is 40001 to 41800.Page 22
Modbus Register MapModbus Register Configuration (Modbus Slave Module)ScalingThe Modbus Slave Module can scale and offset input values to fit within the outputrange for the selected format. The Scaling setup register selects if scaling (asdefined by InZero, InFull, OutZero, and OutFull) is applied to the inputs. Thefollowing values are valid for the Scaling setup register:0 = No1 = YesInZero, InFullIf Scaling is set to YES for a Modbus Slave Module, the input values are scaledaccording to a formula derived partly from the InZero, InFull setup registers. Inputvalues falling at or below InZero are represented as OutZero. Input values fallingat or above InFull are represented as OutFull. Input values between InZero andInFull are represented as a proportionate value between OutZero and OutFull.InZero and InFull are defined to range from -1x10 38 to +1x10 38 , but via Modbus,these registers are represented in Signed 32-bit Integer format, so the integerbounds of -2,147,483,648 to +2,147,483,647 are imposed upon these registers.OutZero, OutFullIf Scaling is set to YES, the input values to the Modbus Slave Module are scaled bya formula derived partly from OutZero, OutFull. The absolute range of theseregisters is -2, 147, 483, 647 to +2, 147, 483, 647, but the valid range variesdepending on the selected Format for the Modbus Slave Module. The followingchart shows the OutZero, OutFull ranges for the various Formats:Table 6: Out Zero and Out Full ranges for Modbus formatsFormat Low Bound High BoundUnsigned 16B 0 +65535Signed 16B -32767 +32767Unsigned 32B 0 +2,147,478,647Signed 32B -2,147,478,647 +2,147,478,647Unsigned 32B-M10K 0 +65,535,999Signed 32B-M10K -32,767,999 +32,767,999Packed Boolean N/A N/APage 23
Page 1 and 2: 7500, 7600 and8000 Series MeterAdva
Page 3 and 4: Modbus Register Map7500, 7600 and 8
Page 5 and 6: Modbus Register MapIntroductionIntr
Page 7 and 8: Modbus Register MapException Respon
Page 9 and 10: Modbus Register MapFunction 16: Pre
Page 11 and 12: Modbus Register MapMeter Modbus Reg
Page 13 and 14: Modbus Register MapModbus Slave Mod
Page 15 and 16: Modbus Register MapION External Con
Page 17 and 18: Modbus Register MapModbus Configura
Page 19 and 20: Modbus Register MapModbus Register
Page 21: Modbus Register MapModbus Register
Page 25 and 26: Modbus Register MapPseudocode For C
Page 27 and 28: Modbus Register MapAppendix B: Modb
Page 47 and 48: Modbus Register MapAppendix C: Data
Page 49 and 50: Modbus Register MapAppendix C: Data
Page 51: Modbus Register MapAppendix D: Modb

Modbus Protocol for ION 7500, ION 7600 and ION 8000 series

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