Configuring Access Control

Description

Use the Access Control page to restrict access to the 140NOC78•00 head module in its role as either a Modbus TCP or EtherNet/IP server. When access control is enabled in the Services page, add the IP addresses of the following devices to the list of Authorized Addresses to permit communication with that device:

the 140NOC78•00 head module itself, so that the module can use EtherNet/IP explicit messaging for any of the following purposes:
- obtaining diagnostic data
- resetting the module
- changing the IP address
any client device that may send a request to the 140NOC78•00 head module, in its role as either Modbus TCP or EtherNet/IP server
your own maintenance PC, so that you can communicate with the PLC via Control Expert to configure and diagnose your application, and to view the module’s web pages
any target device to which the 140NOC78•00 head module may send a Modbus TCP explicit message

NOTE: You do not need to list the IP address of a target device to which the communication module may send an EtherNet/IP explicit message.

The following graphic depicts the Access Control page immediately after a new row has been added to the list of Authorized Addresses, but before the new item has been configured:

To display this page:

Step	Description
1	Select the Services node in the navigation tree located in the left panel of the Device Editor. Result:The Services page opens.
2	In the Services page, set the Access Control field to Enabled and click either OK or Apply. Result:The Access Control node appears in the navigation tree.
3	Select the Access Control node in the navigation tree.

NOTE: Refer to the topic Configuring Properties in the Device Editor for instructions on how to edit properties.

Adding and Removing Devices in the Authorized Address List

To add a device to the Authorized Addresses list:

Step	Description
1	In the Access Control page, click Add. A new row appears in the Authorized Addresses list, displaying: a red exclamation point, indicating editing has begun a placeholder IP address of 0.0.0.0
2	Double-click the placeholder IP address. Result:The IP address field expands and becomes editable.
3	In the new IP address field, type the IP address of the device that will be able to access the 140NOC78•00 head module, then press Enter.
4	Repeat steps 1 through 3, above, for each additional device for which you want to grant access to the 140NOC78•00 head module.
5	Refer to the topic Configuring Properties in the Device Editor for instructions on how to save your configuration edits.

To remove a device from the Authorized Addresses list, select its IP address in the list, then click Remove. The selected IP address is removed.