Addressing file types -13, Addressing file types – Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers User Manual
Page 57

Publication 1785-UM012D-EN-P - July 2005
Addressing I/O and Controller Memory 4-13
Addressing File Types
The following two tables show the available file types and the amount of
memory used by each.
Data Table File Types and Memory Usage for PLC-5 Controllers Series E/Revision D
and Later
File Type
File-Type
Identifier
File
Number
Maximum Size of File
16-bit Words and Structures
Memory Used in
Overhead for Each
File
(in 16-bit Words)
Memory Used
(in 16-bit Words)
per Word,
Character, or
Structure
PLC-5/11,
-5/20,
-5/20E
PLC-5/30 PLC-5/40,
-5/40E,
-5/40L
PLC-5/60,
-5/60L,
-5/80, -5/80E
Output image O
0
32
64
128
192
6
1/word
Input image
I
1
32
64
128
192
6
1/word
Status
S
2
128
128
128
128
6
1/word
Bit (binary)
B
3
1
2000 words
6
1/word
Timer
T
4
1
6000 words/2000 structures
6
3/structure
Counter
C
5
1
6000 words/2000 structures
6
3/structure
Control
R
6
1
6000 words/2000 structures
6
3/structure
Integer
N
7
1
2000 words
6
1/word
Floating-point F
8
1
4000 words/2000 structures
6
2/structure
ASCII
A
3-999
2000 words
6
1/2 per character
BCD
D
3-999
2000words
6
1/word
Block-transfer BT
3-999
12000 words/2000 structures
6
6/structure
Message
MG
3-999
32760 words/585 structures
2
6
56/structure
PID
PD
3-999
32718 words/399 structures
2
6
82/structure
SFC status
SC
3-999
6000 words/2000 structures
6
3/structure
ASCII string
ST
3-999
32760 words/780 structures
2
6
42/structure
Unused
--
9-999
6
6
0
1
This is the default file number and type. For this file type, you can assign any file number from 3 through 999.
2
The maximum size of a data table file is 32K words. The maximum size of the entire data table is 64K words