Appendix C

Pin Assignments

Versions “1” and “21” Pin Assignments for RS-232, OCIA and Light Pen Emulation

The version “1” and “21” scanners head cables are terminated with a male 25-pin D-type connector. To connect the scanner to the host device, may require a communication cable. The communication cable may include a connection for a transformer or it may be designed to draw power directly from the host device. This item can be ordered at the same time scanner is purchased.

The version “1” and “21” scanners are designed to be used for RS-232, OCIA or Light Pen Emulation communication.

The following is a list of the pin assignments. The pin numbers are impressed on the head cable’s connector.

Pin

Function

1

AC Shield Ground

2

RS-232 Receive Input

3

RS-232 Transmit Output

4

CTS Input

5

RTS Output

6

Reserved

7

Signal Ground

8 - 12

Reserved

13

Earth Ground

14

Power Ground 1

15

Light Pen Source

16

Light Pen Data

17

OCIA Clock In Return

18

OCIA Clock In

19

Power (11 - 30 volts) DC

20

DTR Input

21

OCIA Clock Out

22

OCIA Clock Out Return

23

OCIA RDATA

24

OCIA RDATA Return

25

Power Ground 2

42

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Image 45
Metrologic Instruments MS700i manual Appendix C, Pin Function