Rockwell Automation 9323-S5500D A.I. SERIES MICROLOGIX 1000 AND PLC-500 SOFTW - Manual (Page 38)

MicroLogix 1000 and PLC-500 A.I. Series Software Reference
2-4
MicroLogix
The MicroLogix controller provides 8 default data files (0-7) and no user-defined data
files. Data file types are listed below.
Fixed, SLC 5/01, SLC 5/02, and 5/03 OS300
The first eight data files (0-7) have default types. File 8 is reserved for future use. You
designate the file types for the remainder of the files (9-255).
SLC 5/03 OS301 and up, and SLC 5/04
The first nine data files (0-8) have default types. You designate the file types for the
remainder of the files (9-255).
Data File Types
The default data file types are:
•
O Output (file 0): This file stores the state of the output terminals for the
controller.
•
I Input (file 1): This file stores the status of the input terminals for the controller.
•
S Status (file 2): This file stores controller operation information. This file is
useful for troubleshooting controller and program operation.
•
B Binary or Bit (file 3): This file is used for internal relay logic storage.
•
T Timer (file 4): This file stores the timer accumulated and preset values and
status bits.
•
C Counter (file 5): This file stores the counter accumulated and preset values and
the status bits.
•
R Control (file 6): This file stores the length, pointer position, and status bits for
specific instructions such as shift registers and sequencers.
•
N Integer (file 7): This file is used to store numeric values or bit information.
Values range from -32768 to 32767.
•
F Floating Point (file 8): Only SLC 5/03 OS301 and SLC 5/04 OS400 processors
and higher use floating point. This file stores single precision non-extended 32-bit
numbers. The valid range is
±
1.1754944e -38 to
±
3.40282347e +38 .