Omron CP1E CPU UNIT SOFTWARE User Manual page 86

5 I/O Memory
Applications
Applications of the bits and words in the Auxiliary Area are predefined. Ladder programs can be simpli-
fied and controllability can be improved by effectively using the bits and words in this area.
Details
• Some words or bits are set automatically by the system and others are set and manipulated by the
user.
The Auxiliary Area includes error flags set by self-diagnosis, initial settings, control bits, and status
data.
• Words and bits in this area can be read and written from the program or the CX-Programmer.
• The Auxiliary Area contains words that are read-only (A0 to A447) and words that can be read and
written (A448 to A753).
• Even the read/write bits in the Auxiliary Area cannot be force-set and force-reset continuously.
Auxiliary Area Words and Bits in the CX-Programmer's System-defined
Symbols
The following table gives the Auxiliary Area bits and words pre-registered in the CX-Programmer's
global symbol table as system-defined symbols.
Refer to A-2 Auxiliary Area Allocations by Address for details.
Word/Bit
A200.11
A200.12
A200.15
A262
A264
A401.08
A402.04
A500.15
5-18
Name
First Cycle Flag
Step Flag
First Cycle Task Flag
Maximum Cycle Time
Present Cycle Time
Cycle Time Too Long Flag
Battery Error Flag
Output OFF Bit
Name in CX-Programmer
P_First_Cycle
P_Step
P_First_Cycle_Task
P_Max_Cycle_Time
P_Cycle_Time_Value
P_Cycle_Time_Error
P_Low_Battery
P_Output_Off_Bit
CP1E CPU Unit Software User's Manual(W480)