RS-232C Port

The Controller is equipped with one standard RS-232C port.
To communicate with external devices using two or more RS-232C ports, an RS-232C board must be installed in an option slot.
For details on the expansion ports, refer to the following section.
RS-232C Board

Port numbers

Port numbers are assigned as shown in the following table.

Port Number	Supported Hardware
#1	Standard RS-232C connector
#2	Expansion RS-232C board, 1st board, CH1
#3	Expansion RS-232C board, 1st board, CH2
#4	Expansion RS-232C board, 2nd board, CH1
#5	Expansion RS-232C board, 2nd board, CH2