FPΣ
Specifications
13 - 28
13.6 Table of Special Data Registers
The special data registers are one word (16-bit) memory areas which store specific
information.
(A: Available, N/A: Not available)
Address Name Description Reading Writing
DT90000 Self-diagnostic error code The self-diagnostic error code is stored
here when a self-diagnostic error occurs.
A N/A
DT90001 Not used N/A N/A
DT90002
Position of abnormal I/O unit
for FPΣ left side expansion
When an error occurs at FPΣ expansion
I/O unit, the bit corresponding to the unit
No. will be set on “1”. Monitor using binary
display.
15 11 7 3 2 1 0 (Bit No.)
(Unit No.)
on “1”: error, off “0”: normal
3210
A N/A
DT90003 Not used N/A N/A
DT90004 Not used N/A N/A
DT90005 Not used N/A N/A
DT90006 Position of abnormal intelli-
gent unit for FPΣ left side ex-
pansion
When an error condition is detected in an
intelligent unit, the bit corresponding to the
unit No. will be set on “1”. Monitor using
binary display.
15 11 7 3 2 1 0 (Bit No.)
(Unit No.)
on “1”: error, off “0”: normal
3210
A N/A
DT90007 Not used
DT90009 Communication error flag for
COM2
Stores the error contents when using
COM.2 port.
A N/A
DT90010 Position of I/O verify error unit
for FP0 right side expansion
Whenthe state ofinstallation of FP0expan-
sion I/O unit has changed since the power
was turned on, the bit corresponding to the
unit No. will be set on ”1”. Monitor using
binary display.
15 11 7 3 2 1 0 (Bit No.)
(Unit No.)
on “1”: error, off “0”: normal
210
A N/A
DT90011 Position of I/O verify error unit
for FPΣ left side expansion
When the state of installation of FPΣ ex-
pansion I/O unit has changed since the
power was turned on, the bit corresponding
to the unit No. will be set on ”1”. Monitor
using binary display.
15 11 7 3 2 1 0 (Bit No.)
(Unit No.)
on “1”: error, off “0”: normal
3210
A N/A
DT90012 Not used N/A N/A