Multi-Tech Systems 7500, 7600 manual Modbus Slave Module Parameter Mapping

ION 7500 / ION 7600 User’s GuideUsing the Modbus RTU Protocol

Modbus Slave Module Parameter Mapping

The following tables show which measurements are provided by each of the Modbus Slave modules. The source for each measurement is shown (“Source ION Module”) so that you can easily delete parameters if you want to access different data. Note that the Modbus Register remains the same if you link a different parameter into one of the Modbus Slave module inputs (i.e. any value you link to Modbus Slave module #1, Source Input #1 will use Modbus Register 40011).

Measurement	Label	Source ION Module	Modbus Module and Input Number	Modbus Register
L-N Voltage Phase A	Vln a	Power Meter	Modbus Slave #1 – Source Input #1	40011
L-N Voltage Phase B	Vln b	Power Meter	Modbus Slave #1 – Source Input #2	40012
L-N Voltage Phase C	Vln c	Power Meter	Modbus Slave #1 – Source Input #3	40013
Average L-N Voltage	Vln avg	Power Meter	Modbus Slave #1 – Source Input #4	40014
L-L Voltage AB	Vll ab	Power Meter	Modbus Slave #1 – Source Input #5	40015
L-L Voltage BC	Vll bc	Power Meter	Modbus Slave #1 – Source Input #6	40016
L-L Voltage CA	Vll ca	Power Meter	Modbus Slave #1 – Source Input #7	40017
Average L-L Voltage	Vll avg	Power Meter	Modbus Slave #1 – Source Input #8	40018
Phase A Current	I a	Power Meter	Modbus Slave #1 – Source Input #9	40019
Phase B Current	I b	Power Meter	Modbus Slave #1 – Source Input #10	40020
Phase C Current	I c	Power Meter	Modbus Slave #1 – Source Input #11	40021
Average Current	I avg	Power Meter	Modbus Slave #1 – Source Input #12	40022
Voltage Unbalance	V unbal	Power Meter	Modbus Slave #1 – Source Input #13	40023
Current Unbalance	I unbal	Power Meter	Modbus Slave #1 – Source Input #14	40024
Line Frequency	Freq	Power Meter	Modbus Slave #1 – Source Input #15	40025
Neutral Current	I 4	Power Meter	Modbus Slave #1 – Source Input #16	40026

Measurement	Label	Source ION Module	Modbus Module and Input Number	Modbus Register
Phase A kW	kW a	Power Meter	Modbus Slave #2 – Source Input #1	40027
Phase B kW	kW b	Power Meter	Modbus Slave #2 – Source Input #2	40029
Phase C kW	kW c	Power Meter	Modbus Slave #2 – Source Input #3	40031-40032
Total kW	kW tot	Power Meter	Modbus Slave #2 – Source Input #4	40033-40034
Phase A kVAR	kVAR a	Power Meter	Modbus Slave #2 – Source Input #5	40035-40036
Phase B kVAR	kVAR b	Power Meter	Modbus Slave #2 – Source Input #6	40037-40038
Phase C kVAR	kVAR c	Power Meter	Modbus Slave #2 – Source Input #7	40039-40040
Total kVAR	kVAR tot	Power Meter	Modbus Slave #2 – Source Input #8	40041-40042
Phase A kVA	kVA a	Power Meter	Modbus Slave #2 – Source Input #9	40043-40044
Phase B kVA	kVA b	Power Meter	Modbus Slave #2 – Source Input #10	40045-40046

Chapter 3 - Default Meter Functionality Page 71