Chapter 3 PLC System Configuration & Settings Enable IP Address Filter If the Enable IP Address Filter checkbox is selected, devices whose IP addresses are listed in the table will be allowed to communicate with the CPU module, and the CPU module will discard data packets sent from devices whose IP addresses are not listed in the table. The steps of setting the function are as follows. Sixteen groups of IP address at most can be listed in the table. (1) Select the Enable IP Address Filter checkbox, and then double-click an item which will be modified or added in the table. (2) Type a start IP address and an end address in the IP address Filter window.
The start IP address must be less than the end IP address. Finally, click OK . Enable Static ARP Table Users can use this function to set MAC addresses and corresponding IP addresses. The MAC address of every device is unique. If the MAC address of device A is known, the MAC address can be bound to the IP address assigned to device A. The CPU module will regard the IP address as the exclusive address of device A. Even if device B is assigned the same IP address, the CPU module does not respond to device B. The steps of setting the function are as follows. Sixteen groups of addresses at most can be listed in the table.
(1) Select the Enable Static ARP Table checkbox, and then double-click an item which will be modified or added in the table. 3-173