Liebert 485 Leaflet

• Locate the Intellislot option for your Liebert equipment.
• You might need to remove a plastic Intellislot cover.
• Insert the OpenComms 485 Card into the Intellislot bay.
• Secure the card with the supplied screws.
• Connect RS-485 cable.

IGM: The card ships with IGM service enabled. (No configuration 

is required for IGM communications.)
Modbus: To assign a server ID address, use the Service Terminal 

to configure the card. Proceed to Steps 2 & 3.

• Locate the blue serial configuration cable (null modem) that shipped 

with the card.

• Connect the configuration cable to the DB-9 port on the card and to a 

COM port on your PC.

• Use terminal emulation software, 

such as HyperTerminal™, to 

open a direct connection to the 

card.

• Press ENTER for the Main 

Menu, above right.

• Select option 1 and press enter 

to access the communications 

settings, shown at right.

• Enter 1 and press enter to 

enable the Modbus application.

• At the next screen, enter 3 to 

access the screen to set the 

server ID for the OC-485 card 

(the ID default is 1, but may be 

any number up to 255). In the 

example below right, the server 

ID is “2.”

• Press Esc to return to the Main 

Menu.

• Enter X and press Enter to exit 

HyperTerminal, save your 

changes and reboot the card.

Baud Rate:

9600

Data Bits:

8

Parity:

None

Stop Bits:

1

Flow Control: None