Epson ES-1000C Reference Manual page 171

ID Switch Setting
The SCSI ID is set with the ID switch mounted on the back of the
scanner.
The ID switch numbers correspond to the available ID and can be
set from 0 to 7. The numbers 8 and 9 should not be used.
Command Chart
This device uses the following group 0 processor commands.
Code Command
00H TEST UNIT READY
03H REQUEST SENSE
08H RECEIVE
0AH SEND
12H INQUIRY
*1 For sense data returned by the REQUEST SENSE command, only the extension
sense data format is supported.
*2 The INQUIRY data returned by the INQUIRY command is as follows:
Description
Ready for operation confirmation
Sense data request (*1)
Data transfer from target
Data transfer from initiator
SCSI device data request (*2)
Interface Specifications
A-9