Allen-Bradley PLC-5 User Manual page 58

4-14 Addressing I/O and Controller Memory
File Type File-Type File
Identifier Number
Output image O 0
Input image I 1
Status S 2
Bit (binary) B 1
3
Timer T 1
4
Counter C 1
5
Control R
1
6
Integer N 1
7
Floating-point F 1
8
ASCII A 3-999
BCD D 3-999
Block-transfer BT 3-999
Message MG 3-999
PID PD 3-999
SFC status SC 3-999
ASCII string ST 3-999
Unused -- 9-999
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
Publication 1785-UM012D-EN-P - July 2005
Data Table File Types and Memory Usage for PLC-5 Controllers Series E/Revision C
and Earlier
Maximum Size of File
16-bit Words and Structures
PLC-5/11, PLC-5/30 PLC-5/40,
-5/20, -5/40E,
-5/20E -5/40L
32 64 128
32 64 128
128 128 128
1000 words
3000 words/1000 structures
3000 words/1000 structures
3000 words/1000 structures
1000 words
2000 words/1000 structures
1000 words
1000words
6000 words/1000 structures
2
32760 words/585 structures
2
32718 words/399 structures
3000 words/1000 structures
2
32760 words/780 structures
6
Memory Used in
Overhead for Each
File
PLC-5/60,
(in 16-bit Words)
-5/60L,
-5/80, -5/80E
192 6
192 6
128 6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
Memory Used
(in 16-bit Words)
per Word,
Character, or
Structure
1/word
1/word
1/word
1/word
3/structure
3/structure
3/structure
1/word
2/structure
1/2 per character
1/word
6/structure
56/structure
82/structure
3/structure
42/structure
0