Configuring WiFi Access Point mode - Facility Explorer - LIT-12012339 - Wireless Device - ZFR: Wireless Field Bus System

FX80 WiFi Technical Bulletin

Brand
Facility Explorer
Product name
ZFR: Wireless Field Bus System
Document type
Technical Bulletin
Document number
LIT-12012339
Revision date
2019-03-22
Language
English

About this task

You can configure the FX80 WiFi subsystem to run in Access Point mode. You can use this configuration either as a network for WiFi enabled field bus devices, or to provide browser or FX Workbench access to local tools.

To perform this task, you must have a connection to the FX80 and set the WiFi Selector Switch to the OFF (center) position.

Figure 1. Access Point mode

Note: You must stop the WiFi subsystem before starting any WiFi process.

Procedure

  1. Go to Platform > WiFi Configuration. The WiFi Configuration dialog box appears.
  2. Click the Access Point Mode tab and if desired, modify the Adapter IPv4 Address or Adapter IPv4 Netmask values.

    By modifying these values, you are setting the client address to make an IP connection over WiFi while the unit is functioning as an Access Point.

    Note: The IP address and subnet must not conflict with IP addresses used for wired Ethernet connections.
  3. In SSID field, enter a name for the Access Point. Replace the default name with a unique, meaningful network name.
  4. Select the Broadcast SSID check box if you want to configure the Access Point for field bus devices so that the devices can detect the Access Point signal and connect as needed. Otherwise, for security purposes, clear the Broadcast SSID check box.
  5. In the Passkey field, enter a Passkey for the unit.

    This sets a password that a user must enter to connect to this network.

  6. From the Wpa Mode list, select the preferred mode.

    WPA WPA2 (default) accommodates most devices.

  7. From the Key Management Algorithms list, select an encryption algorithm appropriate for the devices connecting to this network.
  8. From the Pairwise Cipher Suites list, select an encryption suite appropriate for the devices connecting to this network.
  9. In the Inactivity Timeout field, enter the desired value (minutes).

    This sets a limit on the amount of time a client connection can be inactive. On reaching the timeout limit, the WiFi adapter is shutdown completely. To restart the adapter, you must move the WiFi Selector Switch on the unit to OFF. Once the WiFi Current State shows Stopped, move the WiFi Selector Switch back to ACC.

    Note: If the intended WiFi usage is for tool connectivity, then set this value to some small number of minutes. If the intended WiFi usage is for field bus integration, then set this value to 0 to disable the Timeout functionality.
    Important: An Access Point represents a potential target for cyber attack. Leaving the Access Point disabled by default is a security best practice.
  10. To configure a Whitelist, select the Enable Whitelist check box, then click Whitelist to enter the MAC addresses permitted to join the network (up to 16 addresses).

    A whitelist is an inventory of known MAC addresses permitted (or denied) access to the WiFi access point. A whitelist functions as an added layer of protection for the WiFi network. The format is six HEX addresses separated by a colon (for example, 08:00:69:E2:01:FE).

  11. To configure Mode and Channel properties, click Config Channel and do the following:
    Note: If not preconfigured, then you must set the Country Code. For US models, the country code is preconfigured at the factory.
    1. From the County Code list, select the appropriate two-digit country code. Configuring a County Code is a permanent change to the unit that you cannot alter.
    2. From the Radio Mode list, select an appropriate 802.11 type for the devices connecting to the network.
    3. From the Bandwidth list, select the preferred frequency band. The HT20 HT40 (default) option accommodates most devices.
    4. From the Channel list, select the least congested channel number for your network.
  12. In the Client Range Low field, enter the lowest IP address for the range.
    Note: The adapter IP should be in the same subnet, but not in the range of addresses already defined.
  13. In the Max Number of Clients Allowed field, enter the maximum number of WiFi clients that can connect at a given time (maximum limit is 16).
    Note: The WiFi adapter supports a maximum of three user interface devices such as, a laptop, computer, or WiFi phone, at a given time. However, this limit is not enforced.
  14. Click Save. The saved configuration changes take effect the next time WiFi is started.
  15. In the platform WiFi Configuration view of FX Workbench, select True from te WiFi Enabled list.
  16. Move the WiFi Selector Switch on the controller to the ACC (left) position to start the WiFi adapter.