DOCA0142EN-06

Modbus TCP/IP Filtering

Description

The MODBUS TCP/IP FILTERING page allows you to set the level of access for Modbus TCP/IP clients connected to IFE interface.

The users with Security Administrator role can edit the Modbus TCP/IP filtering parameters.

Navigation to the Modbus TCP/IP Filtering Page

To view the MODBUS TCP/IP FILTERING page, click SECURITY > MODBUS TCP/IP FILTERING.

Modbus TCP/IP Filtering Parameters

Parameters

Description

Modbus TCP/IP Filtering

Enables the Modbus TCP/IP address filtering (disabled by default).

The list of IP addresses available in the table is granted access.

IP Filtering Global Access List Parameters

Click the icon to edit the IP Filtering Rules and set the access level.

Setting

Description

IP Range

Filters the required IP address you entered. A maximum of 10 IP addresses are allowed.

Access level

Displays the access level for the corresponding IP address:

  • Read only: The following Modbus TCP/IP function codes are allowed:

    • 1 (0x01)

    • 2 (0x02)

    • 3 (0x03)

    • 4 (0x04)

    • 7 (0x07)

    • 8 (0x08)

    • 11 (0x0B)

    • 12 (0x0C)

    • 17 (0x11)

    • 20 (0x14)

    • 24 (0x18)

    • 43 (0x2B), with subfunction codes 14 (0x0E), 15 (0x0F), and 16 (0x10).

    • 100 (0x64)

  • None: The access to the IP address is blocked.

  • Read/Write: Full access is provided.

IP Filtering Exception List Parameters

Click Add Exception button and set additional IP Filtering Rules parameters.

Setting

Description

IP Address/IP Range

Filters the required IP address you entered. A maximum of 10 IP addresses are allowed.

Access level

Displays the access level for the corresponding IP address:

  • Read: The following Modbus TCP/IP function codes are allowed:

    • 1 (0x01)

    • 2 (0x02)

    • 3 (0x03)

    • 4 (0x04)

    • 7 (0x07)

    • 8 (0x08)

    • 11 (0x0B)

    • 12 (0x0C)

    • 17 (0x11)

    • 20 (0x14)

    • 24 (0x18)

    • 43 (0x2B), with subfunction codes 14 (0x0E), 15 (0x0F), and 16 (0x10).

    • 100 (0x64)

  • None: The access to the IP address is blocked.

  • Read/Write: Full access is provided.

QR code for this page

Was this helpful?