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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