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C141-E035-02EN 5 - 9
5.3.3 Write protect, terminating resistor setting
(1) Write protect
When the write protect function is enabled, writing to the disk medium is disabled. The write
protect function setting is not provided to the SCA2 type 16-bit SCSI model (MAx3xxxSC).
For information on MAx3xxxSP, refer to Figure 5.2 and 5.3.
Table 5.4 Write protect setting (single-ended 16-bit SCSI model: MAx3xxxSP)
Write protect MAx3xxxSP
CN7 13-14
Write operation is enabled. Open (*1)
Write operation is disable. Short
*1 Setting at factory shipment
(2) Connection of terminating resistor on SCSI interface
a. SCA2 type 16-bit SCSI model (MAx3xxxSC)
Since there is no SCSI terminating resistor on the SCSI interface for SCA2 type 16-bit
SCSI, there is no setting on the IDD.
b. Single-ended 16-bit SCSI model (MAx3xxxSP)
Setting terminals CN6 5-6 set whether to use the terminating resistor circuit on the SCSI
interface provided for the IDD (see Table 5.5).
IMPORTANT
When the external operator panel is connected using the external
operator panel connector CN1, this setting is effective only when
the A9 pin (TERM-ON) is open.
Table 5.5 Setting of connection of terminating resistor on SCSI interface
(single-ended 16-bit SCSI model: MAx3xxxSP)
Connecting SCSI interface terminating resistor MAx3xxxSP
CN6 5-6
Terminating resistor circuit is not connected. Open
Terminating resistor circuit is connected. Short *
* Set at factory shipment