Specify the IP address of this UDP module. This is the address that the module will respond to for ARP/ICMP messages. The HW address of the module is also constructed by pre-pending the value 00:60 to this IP address supplied. Example: IPADDRx=192.9.200.100 Where x = 1|2 for the 1st or 2nd module. Both if x is not specified. Where ip = aaa.bbb.ccc.ddd in string notation