3.5 Settings

1)Each SCSI device connected to the same SCSI bus must have a unique SCSI ID.

2)If contention occurs in the ARBITRATION phase, the priority of the SCSI use authority depends on SCSI IDs as follows:

7 > 6 > 5 > 4 > 3 > 2 > 1 > 0

(2)SCSI terminating resistor mode

Enabling or disabling the SCSI terminating resistor, module on the PCA can be set.

When the drive positions at other than the end of the SCSI bus, the SCSI terminating resistor should be disabled. Table 3.6 shows the SCSI terminating resistor mode setting.

Table 3.6 SCSI terminating resistor mode

SCSI terminating resistor mode

(7-8)

 

 

SCSI terminating resistor module on the PCA is enabled.

SHORT *1

 

 

SCSI terminating resistor module on the PCA is disabled.

OPEN

 

 

*1 Factory setting

 

(3) Write cache mode

The write cache mode can be set. The write cache mode can also be enabled or disabled by the MODE SELECT command.

Table 3.7 shows the settings of the write cache mode.

Table 3.7 Write cache mode setting

Write cache mode

(9-10)

 

 

Write cache is disabled at executing the WRITE/WRITE

OPEN

AND VERIFY command

 

 

 

Write cache is enabled at executing the WRITE/WRITE

SHORT *1

AND VERIFY command.

 

 

 

*1 Factory setting

 

C156-E224-01EN

3-19

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Fujitsu MCJ3230SS manual Scsi terminating resistor mode, Write cache mode setting