6 Scanner-unique Commands

Scanner-unique command format

This chapter provides information about the scanner-unique commands used for communication and data exchange between the scanner and host system.

Scanner-unique commands, which are used to establish or change the scanner configuration can be executed by sending a SCSI Send command (with the Transfer Type set to 80H) from the host system.

The host may query the scanner to determine the current scanner configuration by executing a SCSI Read command with the Transfer ID set to the 2-byte scanner-unique command. The scanner will return the data field value and the scanner-unique command as data for the Read command.

The scanner-unique command format is used to exchange commands and data between the scanner and host. The scanner- unique command format is described below.

Data Field

Command Field

Data Field — contains numerical data (in ASCII format) and ASCII character strings. It is variable in length.

Command Field — contains two bytes of upper-case alphabetic ASCII characters that represent a unique scanner command. The second command character received in a command sequence indicates an End-of-Frame condition has been reached.

The following example shows how to create a scanner-unique command:

This command transmits the numerical value 345.6 with scanner- unique command DA.

HEX

33

34

35

2E

36

44

41

CHAR

3

4

5

.

6

D

A

NOTES:

•One or more of the scanner-unique commands may be sent using the SCSI Send command.

•A command requiring a data field is not accepted by the scanner without the data field.

•Do not add leading zeros to parameters unless instructed to do so for a particular command.

•Limited auditing of the data fields is performed. Invalid data in a data field may cause unexpected results.

A-61124 March 1999

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Kodak 9500 manual Scanner-unique Commands, Scanner-unique command format
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9500 specifications

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