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CTI 2572 Installation and Operation Guide
141
The subnet mask must allow at least two bits of host address. This translates into the requirement that
that the subnet mask must contain at least two zeroes. In addition, a subnet mask which causes the
derived host address to be 0 or a broadcast address (all bits set to 1) is invalid.
Port Number
The Port Number identifies a particular process or service offered by the host. Some services, such
as echo server, are provided via standard "well known" port numbers. For the 2572 PLC Network
Server facility, you can configure the TCP/UDP port number.
NOTE:
The examples in CTI documents use 1505 (decimal) as the PLC Network Server port number. Unless
you have a specific reason for using another number, you should use 1505.