Rockwell Automation 1785-Lx6B,D17856.5.13 MNL. PLC-5 PROTECTED PROCESSOR - Manual (Page 22)

3 Chapter
3-1
Configuring and Using Data-Table
Element Protection
If you want to read about: Go to page:
Creating a protection file 3-1
Setting up a protection file 3-2
Entering data-table ranges into a protection file 3-3
Screening commands 3-5
Protecting from offline changes 3-5
Understanding restrictions placed on the system 3-6
Testing the protection file 3-8
As system administrator, implement DTEP by:
• obtaining system-administrator (class-1) privileges
• creating an integer data-table file to serve as the DTEP file
• entering the chosen integer file’s number into the processor’s status file
(data-table file 2)
• entering the data-table ranges that need to be protected into the DTEP file
As system administrator, follow the steps on the left to create an integer
data-table file to be used as the DTEP file.
Make sure that this file is just large enough to contain the number of
elements that is three times the number of ranges you are protecting. See
page 3-3 for guidelines on determining the size of your protection file.
DATA TABLE MAP
FILE TYPE LAST ADDRESS SIZE (elements) SIZE (words)
0 O output O:177 128 134
1 I input I:177 128 134
2 S status S:127 128 134
3 B binary or bit B3/15 1 7
4 T timer T4:0 1 9
5 C counter C5:0 1 9
6 R control R6:0 1 9
7 N integer N7:30 31 37
8 F floating point F8:0 1 8
9 F floating point F9:0 1 8
10 unused 0 6
PROCESSOR MEMORY LAYOUT
853 words of memory used in 64 data table files
108 words of memory used in 16 program files
48191 words of unused memory available
Enter address to create
> N10:10
Rem Prog PLC–5/46 Series C Revision G 5/46 File PROTECT
6200
Main Menu
Online
Program
Memory
Create
F6
Map
General
Utility
Data-Table File
Enter Last Address
F1
F1
F7
Using this Chapter
Creating a Protection File