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1 FUNCTIONS
1.15 Simple CPU Communication Function (RJ71EN71, RnENCPU (Network Part))
■UDP/TCP
Set the protocol used for the communication.
■IP address, port number, and own station port number
Set the IP address, port number, and own station number of the communication destination.
• When a multiple CPU system is configured, specify the IP address of the CPU module to which the Ethernet
cable is connected.
• Port numbers 1 to 1023 are typically reserved port numbers (WELL KNOWN PORT NUMBERS) and 61440
to 65534 are used by other communication functions, so it is recommended to use 1024 to 4999 or 5010 to
61439 for the own station port numbers.
• If the communication destination is Mitsubishi Electric programmable controllers, the number between
61696 and 65534 is dynamically used for the own station port number. Consequently, do not specify the
number between 61696 and 65534 for the own station port number in the SP.SOCOPEN instruction.
Otherwise, the instruction may not be completed properly.
• When specifying the same communication destination in multiple settings, set different own station port
numbers.
Item Setting range
IP Address 0.0.0.1 to 223.255.255.254
Port No. 1 to 65534
Own station port number 1 to 4999, 5010 to 65534
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