Omron NT11 - 01-2004 User Manual page 137

Memory Table Entries and Bar Graph
Application Example of Copying of a Character-String Memory Table Entry
124
This example gives a PLC program to switch the character-string display on
the screen by using the memory table entry copy operation as the allocated
bit is turned ON and OFF.
• Support tool settings
Allocate the memory as shown below by using the support tool.
PT status control area allocation: Word 0100
Contents registered to the screen: Character-string memory table entry
No. 4
Line 1
Character-string memory table entry 4
Character-string memory table entry settings
No. Contents
4 Normal
10 Error
11 Normal
• PLC ladder program
Create a PLC ladder program as follows:
09000
Error flag
09000
Error flag
• Program operation
1. When an error occurs (bit 09000 turns ON), the NT11 displays the mes-
sage "Error".
2. When the error is cleared (bit 09000 turns OFF), the NT11 display mes-
sage reverts to "Normal".
Normal
Number of
Character Digits
6 digits
6 digits
6 digits
(1)
@MOV(21)
#0004 Copy type, copy destination memory table entry No.
102 Copy destination word
@MOV(21)
Copy source memory table entry No.
#0010
Copy source word
101
(2)
@MOV(21)
Copy type, copy destination memory table entry No.
#0004
102 Copy destination word
@MOV(21)
Copy source memory table entry No.
#0011
Copy source word
101
Section 5-3