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FPC-8057 User’s Manual
Pin assignment of the 9 Pin, Female,
SUB-D, COM1 [RS-232] Port.
Pin Designations
Note: This port is not used for
downloading or for printing functions.
COM1 [RS-232]
Pin# Symbol Function
1 DCD Data Carrier Detect
2 RxD Received Data
3 TxD Transmitted Data
4 DTR Data Terminal Ready
5 GND Signal Ground
6 DSR Data Set Ready
7 RTS Ready to send
output
8 CTS Clear to send input
9 RI Ring Indicator
15 Installation Instructions