Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 541

Auxiliary Area Allocations
Address Name
Words Bits
A042 A04200 Duplex
to Communi-
A04207 cations
Switch
Cause
Flags
A04208
to
A04215
A043 to A04300
A049 to
A04915
Function
Duplex Communications Switch Cause
Flag for Communication Unit with unit
number 0
Active/Standby Communications Units
When an error occurs in the active Com-
munications Unit and operation is
switched to the standby Communications
Unit, an error code will be stored to show
the cause of the error in the active Com-
munications Unit. An error code is not
stored when an error occurs in the
standby Communications Unit.
Primary/Secondary Communications
Units (See Note)
When an error occurs in the primary Com-
munications Unit and operation is
switched to the secondary Communica-
tions Unit, an error code will be stored to
show the cause of the error in the primary
Communications Unit. When an error
occurs in the secondary Communications
Unit, an error code is stored in the words
for one unit number higher than the pri-
mary Communications Unit.
All Communications Units
The corresponding bit in A436 (Duplex
Communications Switched Flags) will also
turn ON.
Refer to the Operation Manual for the
Communications Unit for details on error
codes.
Note: Primary/Secondary Communica-
tions Units are supported by CPU
Unit Ver. 1.1 or later.
Communications Unit with unit number 1
Primary/Secondary Communications
Units
The error information of the secondary
Unit when an error occurs in the second-
ary Unit will be stored in the bits for unit
number 2 (A0400 to A0407).
Communications Units with unit numbers
2 to 15
Primary/Secondary Communications
Units
The error information of the secondary
Unit when an error occurs in the second-
ary Unit will be stored in the bits for the
unit number one higher than that of the
primary Unit.
Settings Status Status
after
mode startup
change
Refer to the Held Cleared When
Operation Man-
ual for the Com-
munications Unit
for details on
error codes.
Appendix B
Timing Related
at flags,
settings
A43600
duplex
communi-
cations
error
occurs
A43601
A43602
to
A43615
505