FEC HFC3000 - RS-232 C Interface Signal

Chapter 4 Installation
PAGE 4-20
4-7 RS-232C Interface Signal
4-7-1 RS232C Specifications (RS232C-1)
Compatible connector
D-SUB 9-pin socket Inch thread (#4-40)
RS232C Communication Specifications
Synchronization
Method
Start-stop
synchronization method
Communication
Speed
9600bps (fixed)
Communication
Mode
Half-duplex system
Data Length/Start
Bit/Parity/Stop
8 bits/1 bit/None/2 bits (fixed)
Pin No.
Signal
IN/OUT
Details
1
NC
-
Not used
2
RXD
IN
Not used
3
TXD
OUT
Operation result data output
4
DTR
OUT
Always ON output
5
GND
-
Signal ground
6
NC
-
Not used
7
RTS
OUT
Always ON output
8
NC
-
Not used
9
NC
-
Not used
・Be sure to clear the PLC receive buffer when the control power of the controller is
activated. Output of garbage data due to the effects of noise, etc., may cause data
deviation.
●Connection Diagram
D-SUB 9-pin socket D-SUB 25-pin plug (9-pin socket)
TXD 3 3(2) RXD (result data output)
RXD 2 2(3) TXD (not used)
DTR 4 20(4) DTR
6(6) DSR
RTS 7 4(7) RTS
5(8)CTS
GND 5 7(5) GND
RS232C-1
Caution
Equipment Side
Unit Side