Intermec EasyCoder 601XP Installation Instructions page 2

Description
Ribbon Low Sensor
Code Disc
EasyCoder 501/601 XP
Ribbon Low Sensor
Installation Instructions
Edition 2, September 1998
Part No. 1-960447-01
Intermec EasyCoder 501/601 XP Ribbon Low Sensor – Installation Instructions Ed. 2
As an option, the EasyCoder 501 XP and 601 XP printers can be
fitted with a sensor, that detect the rotation of the ribbon unwind
spool and updates a counter. By means of custom-made application
program, the counter can be read and used to detect ribbon-low
conditions (as opposed to out-of-ribbon conditions, which are
supported by the standard error handling).
On the ribbon unwind spool, there is a code disc with 41 gaps. When
the spool rotates, the photoelectric sensor detects when the light is
interrupted and decrements a counter. The counter is set at power-
up to a random value of approximately 65,000 and can be read using
SYSVAR (13), see Intermec Fingerprint Reference Manual.
The sensor requires no regular cleaning. However, should any
malfunction be detected, blow the sensor clear from dust or paper
residue before deciding to replace it.
The sensitivity of this sensor cannot be adjusted.
Ribbon Low Sensor
1