PCM-2 Manual.pdf - Voss Associates

Intermec Bar Code Reader Option (PCM2 OPT7F)
This code reader option for the PCM-2 utilizes a compact programmable
Intermec 2861 scanner/decoder module which uses high-speed spinning mirrors
and sweeping laser beams to receive reflected light as analog waveforms from bar
code labels which are then decoded and sent to the user as ASCII data. Timing
and focus can be tuned to discern a variety of bar code widths. Interfacing with
the PCM-2 is accomplished through an ADP-RS232 interface module.
The Intermec 2861 features the following performance characteristics and code
reading capabilities:
Power On LED Status Light
Good Read LED Status Light
Scanning Distance --------- 2 to lOin.
Scanning Width ------------ 1.5 to 9.75 in.
Scanning Speed ------------ 200 scans per sec.
Code Density --------------- 0.19 mm (0.0075 in.) to 1.27 mm (0.050 in.)
Code Discrimination: Code 39, Codabar, 12 of 5, UPC/EAN, and Code 128.
The Scanner module mounts in the upper electronics enclosure of the PCM-2,
behind the console panel's display panel. The power supply mounts in the lower
electronics enclosure on the lower vent panel and the ADP-232 interface module
mounts to the floppy disc drive cover plate in the upper electronics enclosure.
The custom badge insert interface panel is mounted in the display panel, beneath
the CRT.
Note: The scanner mounting hardware and display panel/badge interface
hardware for this option has been designed around a specific set of code density
and focus distance parameters. Eberline can accomodate many other user specific
code reading requirements with respect to these scanner mounting and code
density!focus considerations.
WARNING: The Intemec 2861 scanner emits a laser light beam which can be
hazardous if viewed directly. Adequate precautions should be taken to avoid
direct exposure of the beam to the eyes.
Configuration
The Intermec Model 2681AOl scanner unit must be specially configured for use
with Code 39. Its default parameters (9600 baud, 7 data bits, even parity and 1
stop bit) must be changed to 9600 baud, 8 data bits, no parity and 1 stop bit. In
addition, the postamble variable must be set up as follows: POSTAMBLE =
ENABLED = CR (carrige return). Refer to the Model 2861AOI Users Manual
for the specific parameter settings for other bar code types.
17-62 PCM2.MAN/ Rev A/Aprii 1995