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Error Output
18.2
Error Signal Output Conditions (Parallel)
18.2 Error Signal Output Conditions (Parallel)
Product type switching
− When, by parallel input, attempting to switch to a product type that has not been set.
Data output when handshaking is not performed during execution
− When an error occurs in the numerical calculation register or judgment register.
− When image capture fails.
Data output when handshaking is performed during execution
Error signal
− When an error occurs in the numerical calculation register or judgment register.
− When image capture fails.
− When a handshaking timeout occurs.
Overflow signal
− When the numerical calculation register set for output overflows.
(Output data length: 32−bit)
− When the numerical calculation register set for output overflows or result of calculation
is negative.
(Output data length: 8−bit, 16−bit)
− When an error occurs in the numerical calculation register set for output.
Notes
With parallel output when communication mode is set to
standard:
If an error occurs, judgment and numerical calculation outputs
are 0.
With serial output when communication mode is set to standard:
If an error occurs in the judgment register or numerical
calculation register, "e" is output.
If image capture fails, all outputs are "e".
"e" is not output when communication mode is set to
Computer Link.
Parallel output conforms to the Computer Link mode protocol.
18 − 4
OCR Type A230
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