Moxa Technologies CA-132/132I - Manual (Page 39)

Software Installation
CA-132/132I User’s Manual 3-25
Port number: This is actually the port ID of each port. The application software will refer to
the port by its port number (ID). Duplicated port number is not allowed. That
is, each MOXA serial port is referred to as port number in terms of serial
programming.
You may map the port number range to the one you prefer between 0 and 127
as long as no port number overlapping condition or port number undefined
condition occurs. Generally, you should take the convenience of programming
into consideration when specifying the port numbers for the board.
TxD buffer size: The transmission (output) buffer allocated in the system for each port.
RxD buffer size: The receiving (input) buffer allocated in the system for each port.
F5: Group Edit: This is a convenient function that helps you edit the configuration of several
ports at one time as a group.
5. Press F10 to save the latest configuration and exit the SETUP program.