Chapter
10
Operating instructions
ICR 84x Image Code Reader
10-28
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SICK AG · Division Auto Ident · Germany · All rights reserved
8 010 961/0000/10-05-2005
Appendix
10.7
Special applications and procedures
10.7.1
Triggering the Teach-in match code 1 via the “Sensor 2“ switching input
In Reading mode, the ICR compares up to two match codes with the codes it recorded in
the reading pulse. The result status of the code comparison is signaled by the corresponding
functional assignment via the “Result 1“ and “Result 2“ (“Result“ LED) switching outputs and
the beeper. The match codes can also be used as output filters for the host interface. In this
case, when a “Good Read“ occurs, the ICR only outputs those codes that have the same
code type, code length, and data content as the match code(s).
A match code must be a code type which the ICR can evaluate and may contain a maximum
of the following number of characters in the range 32 to 137 dec.:
•
For 2-D codes (DataMatrix ECC 200), max. 1 556 data bytes
•
For bar codes, max. 50 characters
(The length of readable code is reduced with respect to the decodable length as a
result of the distance-dependent dimensions of the reading area (see examples in
Using the “Sensor 2“ switching input, the ICR can:
•
Teach in match code 1 via its optical interface (reading window) and store it
permanently in the parameter set instead of entering it with the CLV Setup program. The
code type, code length, and data content are entered in the parameter set
•
Activate the code comparison. The status remains active until the power supply to the
ICR is switched off
Before the match code can be read, a switch must be connected (see
), the
functional assignment of the switching input changed and Teach-in mode selected.
There are two modes for teaching in match code 1:
•
Dynamic teach-in of match code 1:
Possible for bar codes with the SMART and standard decoders. The code type that
corresponds to the match code must be activated for the evaluation in the ICR. The ICR
must be pulsed manually so that it can read the match code. After the teach-in
procedure has been successfully completed, the ICR still continues to output codes of
all the code types that were previously enabled.
•
Static teach-in of a bar code as match code 1 with/without Pharmacode:
The ICR only uses the standard decoder temporarily. It can also read a match code
whose bar code type is implemented, but not yet enabled for evaluation. A reading
Fig. 10-19: “Sensor 2“ configuration for triggering the teach-in match code 1
ICR 84x
Switch S
V
S
= +15 to +30 V DC
*
) V
imax
= 28 V!
