Appendix A Scanner Interface

This image scanner and the host are connected via an 8-bit parallel interface. The interface follows the ANSI (American National Standards Institute) SCSI 2 (Small Computer System Interface 2) Revision 10c.

This chapter provides an overview of SCSI (minimum information necessary for understanding this scanner), as well as descriptions peculiar to the scanner. For details of SCSI, refer to the ANSI standard.

The following terms are needed to understand this section.

∙

SCSI device:

A host adapter or a target controller that can be attached to the SCSI bus

∙

Initiator:

An SCSI device (usually a host system) that requests an I/O process to be performed by

 

 

another SCSI device (a target)

∙

Target:

An SCSI device that performs an operation requested by an initiator

∙Logical unit:A physical or virtual peripheral device that is addressable through a target

Range of support

(1)System configuration

This scanner operates under the multi-initiator, multi-target environment. provided. This scanner incorporates an integrated target and logical unit

An initiator function is not (image scanner).

SCSI ID: 0 to 7, variable by Digital switch: default is 5.

Logical unit number (LUN): 000, fixed

(2)Bus phases

All phases are supported.

(3)Commands

The following commands are supported by this scanner:

∙INQUIRY

∙OBJECT POSITION

∙MODE SELECT (6)

∙MODE SENSE (6)

∙READ

∙RELEASE UNIT

∙REQUEST SENSE

∙RESERVE UNIT

∙SEND

∙SEND DIAGNOSTIC

∙SET SUBWINDOW

∙SET WINDOW

∙TEST UNIT READY

∙SCAN

A control byte is not supported. If the value other than X’00’ is specified, an error is generated.

Appendix A-1