Message Output - Microscan MS-3 User Manual

Message Output

The following flow chart explains the logic paths taken for Noread, Bad Symbol and
No Symbol outputs.
Start of
Read Cycle
Scans until end
of read cycle
Does the
scanner decode the
symbol?
Is Symbol
Detect enabled?
Is
Transition
Counter Threshold
met?
Notes:
When Symbol Detect is enabled, the scanner will test for a
minimum number of bar and space transitions as set in
Transition Counter Threshold. If that minimum thresh-
old is met, a Bad Symbol message is sent; otherwise a No
Symbol message is sent.
If conditions for a Bad Symbol, No Symbol, or No Object
messages are met but the corresponding output is not
enabled, a Noread message will be output.
Yes
No
No
Yes
Yes
No
Chapter 6 I/O Parameters
Noread
message sent
(if enabled)
Bad Symbol
message sent
(if enabled)
No Symbol
message sent
(if enabled)
read cycle
MS-3 Laser Scanner User's Manual
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