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ION 7500 / ION 7600 User’s Guide
Displaying Data from Other Meters
Custom Front Panel Displays Technical Note
Page 207
Configure the following setup registers as needed: Slave Address, Register 
Address
, Number of Registers read by the module, Format and scaling 
requirements. The supported Slave Address range (Unit ID on ION meters) for a 
Modbus device is from 1 to 247. 
5.
Repeat steps 2 - 4 for every meter or TRAN in the serial network whose data you 
wish to display on the meter with the front panel. 
The meter with the front panel requires a separate Modbus Import module for 
each meter whose data it displays, because all meters in the network have 
unique Unit IDs. This is how the Modbus Master distinguishes which meter 
(Slave Address) is providing what data (Register Address).
6.
Link each Modbus Import module’s output registers to the appropriate Display 
module’s Source inputs.
7.
Define each Display module’s characteristics (display format) by adjusting its 
setup registers. Do the same to the Display Options module if so desired.
8.
This step is important if you want to have your new screens appear in an 
automatic scrolling cycle, or if your custom framework has fewer display 
screens than the factory configuration, and you need to adjust the Scroll 
module’s settings.
9.
Send & Save changes.
RS-485
Display Module 4
Source 1
Source n
Show
Display Module 3
Source n
Show
Display Module 2
Source 1
Source 2
Show
Display Module 1
Source 1
Source n
Show
Modbus Import
Module 3
Value 1
Value n
(ION 7300 TRAN)
Modbus Import
Module 2
Value 1
Value n
(ION 6200)
Value 2
Modbus Import
Module 1
Value 1
Value n
(ION 7500 TRAN)
Scroll Module
Enable
Down
Freeze
Up
Trigger 4
Trigger 3
Trigger 2
Trigger 1
Display
Options
Module
ION 7500 TRAN
ION 7300 TRAN
ION 6200
ION 7500
w/ front panel display