Microscan MS-710, User Manual, Page: 94 / 186

Data Output Message Flow
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MS-710 Scanner User’s Manual
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rs Data Output Message Flow
The following flow chart explains the logic paths taken for Noread, Bad Symbol, No
Symbol, and No Object outputs.
Start of
Read Cycle
Scans until end
of read cycle
Does the
scanner decode the
symbol?
Is
Transition
Counter Threshold
met?
No Object
message sent
(if enabled)
Bad Symbol
message sent
(if enabled)
Yes
No
Is Symbol
Detect enabled?
Noread
message sent
(if enabled)
No
Yes
No
Yes
No Symbol
message sent
(if enabled)
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 or No Object 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.
End of
read cycle
Is an
MS-Sensor present?
No
Yes
Is an object
detected?
Yes
No