Chapter 3 PLC System Configuration & Settings 3.3.4 Setting Ethernet Parameters Users need to select Ethernet - Basic from the main category label for parameter settings, e.g. AHCPU5xx-RS2. The page provides parameter settings for Ethernet port. For information regarding PLC CPU connection through Ethernet, please refer to section 2.4.8. As for descriptions about the Ethernet, please view other related documents or references. Setup the IP address mode. When choosing Static, this means users can directly assign the IP address parameter; but when selecting DHCP or BOOTP, this means the IP address is managed by the dynamic allocation of DHCP or BOOTP.
When IP address mode is Static, users can setup the IP Address, Netmask Address, and Gateway Address . When the PLC CPU is not transmitting any data on the internet and already exceeds the Keep Alive Timer, it will automatically disconnect. If Dynamic is selected in the IP Addressing Mode drop-down list box, the IP address, the subnet mask, and the gateway can be read from the CPU module by means of the following steps. (1) Connect the CPU module to Ethernet, and make sure that the network and the CPU module operate normally. (2) Select Dynamic in the IP Addressing Mode drop-down list box, and download the parameter to the CPU module.
(3) After Refresh is clicked, the system will read the IP address, the subnet mask, and the gateway from the CPU module. The IP address, the subnet mask, and the gateway will be displayed in the boxes. 3-171