125
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9.1 Specifications
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1
2
3
4
5
6
7
8
9
1
11
1
1
1
1
Transmission mode Start-stop synchronization, full duplex
Transfer rate 9600 bps
Data length 8bit
Parity None
Stop bit 1bit
Hand shake No X flow, hardware flow control
Delimiter CR, CR + LF for reception
CR + LF for transmission
Input voltage limit +5 V to +15 V : ON
-15 V to -5 V : OFF
Out put voltage
(load resistance 3 to 7 k
Ω
)
+5 V to +9 V : ON
-9 V to -5 V : OFF
15
69
Pin number Signal IN/OUT Contents
2 RxD IN Incoming data
3 TxD OUT Outgoing data
5 GND GND Signal ground
Other pins are not used
Chapter 9
RS-232C Interface
9.1 Specifications
The RS-232C settings of 3159 are as follows. Since the 3159 settings are
fixed and cannot be changed, these settings must be matched on the
computer side.
RS-232C Settings
No hardware flow control. RTS is connected with CTS in the 3159.
Electrical Characteristics
Connector
Pin arrangement of interface connector ( D-sub 9Pin male )
The signal lines of the 3159's RS-232C connector are as follows.