Determining the IP Address
The IP addressing methods for the Modicon M340 module are shown in the figure:
IP address assignment (continued):
The module supports communications in the Ethernet II and 802.3 frame formats. (Ethernet II is the default.) When communicating with a BOOTP or DHCP server, the module makes 4 requests based on the configured frame type. To avoid flooding the server with simultaneous requests, the transmission time of each request is base on the backoff algorithms defined by the respective BOOTP and DHCP RFCs.
NOTE: In addition, modules that communicate with DHCP servers make requests in this order:
