Unitech MS210 User Manual download pdf (Page 31)

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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)

Number

Signal

2 RXD

3 TXD

14 CTS

16 RTS

7 GND

Power Input(+5V±5%)

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 54 55

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Unitech MS210 User Manual Page 31