Chapter 4. RS-232 Scanner interface specifications
This chapter presents the specifications of the RS-232 scanner interface. This
interface is used for bilateral communication between a Point-of-Sale (POS) ter-
minal and scanner.
Protocol
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4-2
Characteristics
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4-3
Interface signals
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4-3
Signaling characteristics
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4-4
Device requirements
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4-4
Voltage and current requirements
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4-4
Link characteristics
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4-5
Basic operating modes
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4-5
Free flow
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4-5
POS commands and processing requirements
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4-16
POS commands
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4-16
Processing requirements
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4-16
Assignment of RS-232 cable pins
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4-16
Chapter 4. RS-232 Scanner interface specifications
4-1
Summary of Contents for 4685-L0D
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