Online Data Change - Allen-Bradley Mini-PLC Mini-PLC-2/16 User Manual

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Chapter 24
Program Editing

Online Data Change

24-6
Change the address of a word or block instruction by performing the
following steps.
1.
Position the cursor on the instruction you want to change.
2.
Press [Insert].
The cursor, although not displayed, positions itself on the first data digit.
Enter that digit to display the cursor.
3.
Cursor back to the address digits using the [ ] key.
4.
Change <address> as needed. Use a leading zero if required.
Certain data of a word or block instruction, excluding Mathematics and Put
instructions, can be changed while the processor is in the
Run/Program mode.
Change data while the processor is in the Run/Program mode by
performing the following steps.
1.
Position the cursor on the appropriate instruction.
2.
Press [Search] 51.
The key sequence displays the message ON-LINE DATA CHANGE,
ENTER DIGITS FOR: <Required information> near the bottom of the
screen. The new digits are displayed in a command buffer as they are
entered. After the new data is displayed:
3.
Press [Insert] to enter the data into memory.
4.
You can terminate this function by pressing [Cancel Command].
ATTENTION: When the address of an instruction whose data
is to be changed duplicates the address of other instructions in
the user program, this could cause unwanted machine motion.
This could result in damage to the equipment and/or injury to
personnel. The consequences of the change of each instruction
should be thoroughly explored.

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