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Auxiliary Area Allocations
Address
Name
Words
Bits
A023
A02308
Cycle
Time
Overrun
Switch
Flag
A02309
Program
Error
Switch
Flag
A02312
Fatal Inner
Board
Error
Switch
Flag (Pro-
cess-con-
trol CPU
Units only)
A02315
Memory
Error
Switch
Flag
A024 to
Current Cause of Switching to Simplex Operation (Duplex CPU Systems only)
A026
(Check in new active CPU Unit after switch to simplex operation.)
---
Time of
Switch
from
A02400
Duplex to
to
Simplex
A02407
Operation
(Check in
A02408
new active
to
CPU Unit
A02415
after
A02500
switch to
to
simplex
A02507
operation.)
A02508
to
A02515
A02600
to
A02607
A02608
to
A02615
A027
A02700
Duplex
to
Communi-
A02715
cations
Unit Oper-
ating Flags
A031
A03115
Online
Replace-
ment Flag
Function
ON: Exceeding the cycle time caused a
switch from duplex to simplex operation.
The active CPU Unit will be switched.
This flag is turned OFF when duplex oper-
ation is restored.
ON: A program error caused a switch from
duplex to simplex operation.The active
CPU Unit will be switched.
This flag is turned OFF when duplex oper-
ation is restored.
ON: A fatal Inner Board error caused a
switch from duplex to simplex operation.
The active CPU Unit will be switched.
This flag is turned OFF when duplex oper-
ation is restored.
ON: A memory error caused a switch from
duplex to simplex operation. The active
CPU Unit will be switched.
This flag is turned OFF when duplex oper-
ation is restored.
The time operation was switched from
duplex to simplex operation is stored.
Seconds (00 to 59)
Minutes (00 to 59)
Hours (00 to 23)
Day of month (01 to 31)
Month (01 to 12)
Year (00 to 99)
ON: The Communications Unit with the
corresponding unit number is in duplex
operation.
Bits 00 to 15 correspond to unit numbers
0 to F.
ON: A Basic I/O Unit, Special I/O Unit, or
CPU Bus Unit is being replaced online on
the CPU Rack, an Expansion Rack, or a
Long-distance Expansion Rack.
Note: This flag indicates removal of a Unit
for one of the following functions.
• Online Unit Replacement using a
Programming Device
• Unit Removal without a Program-
ming Device
• Removal/Addition of Units with-
out a Programming Device
Settings
Status
Status
after
mode
startup
change
ON: Switched to
Held
Held
simplex opera-
tion for cycle
time error
OFF: Normal
ON: Switched to
simplex opera-
tion for program
error
OFF: Normal
ON: Switched to
simplex opera-
tion for fatal
Inner Board
error
OFF: Normal
ON: Switched to
simplex opera-
tion for memory
error
OFF: Normal
---
Held
Held
ON: Duplex
Held
Cleared When
communications
OFF: Not duplex
communications
ON: Online
Held
Cleared When a
replacement
being performed
OFF: Online
replacement not
being performed
Appendix B
Timing
Related
at
flags,
settings
When
A40108
operation
in CPU
is
Unit with
switched
error
from
duplex to
A40109
simplex
in CPU
operation
Unit with
error
A40112
in CPU
Unit with
error
A40115
in CPU
Unit with
error
When
---
operation
is
switched
from
duplex to
simplex
operation
---
duplex
communi-
cations
mode is
changed
A034
Unit is
replaced
online
503
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