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7 Wiring
NX-series EtherNet/IP Coupler Unit User’s Manual (W536)
7-2 Connecting the Power Supply and Ground Wires
7
7-2-5 Wiring to the Screwless Clamping Terminal Block
1 Mount the terminal block hook on the guide at the bottom of the EtherNet/IP Coupler Unit, lift up
the terminal block, and press in on the top of the terminal block until you hear it engage.
The terminal block will click into place on the Unit.
After you mount the terminal block, make sure that it is locked to the Unit.
Mount a Terminal Block that is applicable to the model of the EtherNet/IP Coupler Unit.
Refer to 4-5 Terminal Blocks on page 4-11 for the applicable Terminal Blocks.
In order to prevent unintentionally installing the wrong terminal block, you can limit the combination of a
Unit and a terminal block.
Insert three Coding Pins (NX-AUX02) into three of the six incorrect attachment prevention holes on the
Unit and on the terminal block. Insert these pins into positions so that they do not interfere with each
other when the Unit and terminal block are connected to each other.
You can use these pins to create a combination in which the wrong terminal block cannot be attached
because the pin patterns do not match.
Attaching a Terminal Block
Preventing Incorrect Attachment of Terminal Blocks
Terminal block hook
Guide at bottom of EtherNet/IP Coupler Unit
Terminal block
Unit
Cannot be
attached.
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