QUESTION: Can the 3 1/2 drive to USB drive be installed on a BIESSE ROVER 323 CNC machine?
The floppy drives TO BE replaced so far are as follows :
Mitsubishi Electric
MF355F – 252MG
S/N MO34420
TEAC FD-235HF C929 – U5
P/N 193077C9 – 29
S/N BS76674
ANSWER: Yes, some pins have to be added to make it work. These are the optional pins:
A. Recent IBM drives (past 20 years): No options. Only one standard remains for PCs.
B. Non-american drive options:
- Is the disk drive ID set as Drive 0, 1, 2, 3?
- Is pin 2 a high density disk control pin (controlled by machine, he will try low density then high density manually and see what outputs proper data on the read line)
- Is pin 2 or pin 4 a high density output sensor? (disk drive optosensor tells you whether the tab is missing on the floppy drive)
- Is pin 2 disabled (high density is autodetected and the floppy drive always puts out proper data)
- Is pin 2 or pin 34 the disk change (notification that disk has been ejected and another placed into it)
- Is pin 34 ready or disk change
- (rarer) Is drive at 300rpm or 360rpm
- (rarer) Is drive have 2.0/1.0 capacity (high or double density) or 2.0/1.6/1.0 capacity (high or double or in-between??)
Following is my documentation for the drives you asked for:
My documentation for the Teac FD-235 (standard settings may be changed by jumpers)
1. DRIVE 1
2. Pin 2 not connected (high density automatic)
3. Disk change on 34
My documentation for the Mitsubishi MF355-F
1. DRIVE 1
2. Pin 2 not connected (high density auto)
3. Pin 34 is Disk Change
Looks very STANDARD, for a non-american drive. In this case, the same dipswitch settings may work for both. My documentation says the *Tajima/Barudan/Happy* model that we had should work immediately. The SFDR-1-A, I believe.
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