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TTL RS232 Interface:
The following table shows pinout for TTL RS232 interface at modular
connector:
Pin Number
Signal
1
Not Used
2
VCC(+5V, output)
3
DET
4
GND
5
RXD
6
TXD
7
Power Input (+5V)
8
CTS
9
RTS
10
Not Used
Note:
(1) DET signal is bi-directional I/O pin and for internal use only.
(2) CTS and RXD are input signals and take 0V to 5V only. If the
scanner is used to interface with a standard RS232 port, those
signals should not be connected.
Standard RS232 Interface:
To support standard RS232 interface, an RS232 adapter cable from the
manufacture must be used. This cable is a special one and can not be
replaced by the others. One end of that cable which has RS232 signal
presented is a DB25 or DB9 female connector and has following
pinout:
DB25 Female (Front View)
1
13
14
25
Pin
Number
Signal
2
RXD
3
TXD
14
CTS
16
RTS
7
GND
25
Power Input(+5V
±
5%)
