Fujitsu MAT3147NC/NP manual Each mode setting, Setting Scsi terminator power supply NP model

5.3.2Each mode setting

(1)Setting terminator power supply

Refer to Table 5.2 for controlling the supply of power from the drive to the SCSI terminator power source (TERMPOW).

For information on NP model, refer to Figures 5.2 and 5.3.

Table 5.2 Setting SCSI terminator power supply (NP model)

Supply on/off of SCSI terminator power from	CN2 23-24
IDD
Supply off	Open
Supply on	Short (*1)
*1. Set at factory shipment.

For NC model, the function of the terminator power supply setting is not supported.

(2)Motor start mode

Set how to control the starting of the IDD spindle motor according to Table 5.3. This setting only determines the operation mode when the power supply is turned on or the microcode is downloaded. In both modes, stopping or restarting the spindle motor can be controlled by specifying the START/STOP UNIT command.

Table 5.3	Motor start mode setting
Start timing of the spindle motor		NC model (*3)		NP model
		CN1 38	CN1 78	CN2 11-12
Starting of the motor is controlled with the		Short	Open or Short	Open
START/STOP UNIT command.
The motor is started immediately after the
power supply is turned on or after the		Open	Open	Short (*1)
microcode is downloaded.
The motor is started after the elapse of a delay
time that is based on the SCSI ID. The delay
time is provided immediately after the power		Open	Short	(*2)
supply is turned on or after the microprogram is
downloaded.

*1. Set at factory shipment.

*2. For NP model, delay starting of spindle motor is supported by the CHANGE DEFINITION command only.

*3. To set the setting terminals on NC models to short, apply voltage ranging between-0.3 V and

0.8V to the setting terminals externally. To set the setting terminals on NC models to open, apply voltage ranging between 2.0 V and 5.5 V to the setting terminals from an external source.

Refer to Chapter 3 of the SCSI Logical Interface Specifications for details of the START/STOP UNIT command.

5-8 C141-E201