How To Assign A Modbus Address - Emerson XEV EX48 Instruction Sheet

7.4 Enter "Pr1" Parameters List
1. Press the SET + DOWN arrow keys for about
3 seconds.
2. The device will display the first parameter in
Pr1 menu.
Only 3 parameters to set on Pr1 are Fty, oPE, SFd
Fty = Type of Refrigerant
oPE = Start Opening Percentage
SFd = Start Function Duration
7.5 Enter Pr2 Parameters List
1. Enter the Pr1 level menu.
2. Select Pr2 parameter and press SET.
3. The PAS label will be displayed followed by a blinking 0.
4. Insert 321 password using the UP and DOWN arrow keys.
7.6 Modify the Parameters Value
1. Enter the programming mode by pressing the
SET and DOWN arrow keys for about 3 seconds.
2. Select the required parameter.
3. Press the SET key to display its value.
4. Use the UP or DOWN arrow keys to change its value.
5. Press the SET key to store the new value and
move to the next parameter.
6. To exit, press SET + UP or wait 30 seconds without
pressing a key.
Note: The set value is stored even when the time-out expires
and ends the procedure.

7.7 How to Assign a MODBUS Address

1. To enter the programming mode, press and
hold the SET and DOWN arrow keys together
for about 3 seconds or until the dots
at the top of the display start flashing.
2. Arrow down to PR2 and press SET to select.
3. PAS for password will display and flash.
4. Use the arrow keys to set the 321 password.
Press SET to save.
Note: If a time-out occurs while setting the password (PR2
flashes), press SET to resume entering the password
5. Use the arrow keys to scroll through and locate Nod.
Press SET. Use the arrow keys to
scroll through and locate Std. Press SET.
6. Use the arrow keys to scroll through and
locate Adr Press SET. Use the arrow keys to choose the
address number of the device. Press SET to save.
7. To exit, press the SET and UP arrow keys together or wait
15 seconds without pressing a key.
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