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Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) User Manual

Page 317

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Chapter 17
Entering and Editing Your Program

17–5

3. Press the key sequence shown below.

ENT

ENT

FUN

4. You are now able to change any or all of the current parameters for this

instruction. The table below describes your options.

If you want to:

Then you should:

accept the current parameters

press

ENT

.

change the current parameters

use

DEL

as a destructive

backspace, or

FUN-DEL

to delete

the entire displayed address. Then
key in the desired address and
press

ENT

.

Once the instruction is accepted, the instruction immediately after the
instruction you wrote over is displayed.

Overwriting an Instruction

The steps below describe how to write over an existing instruction.

1. Change the edit mode to overwrite (if you haven’t already).

OVR

2. Arrow to the instruction you want to replace.

Important: You cannot write over the Start of File, Start of Rung, or

End of File screens.

3. Press the instruction key or enter the function code corresponding to the

instruction you want to enter.

A. If this instruction is of the same instruction class as the instruction it is

overwriting (e.g., LD and LDI), the current parameters are loaded for
the new instruction. The table below describes your options.

If you want to:

Then you should:

accept the current parameters

press

ENT

.

change the current parameters

use

DEL

as a destructive

backspace, or

FUN-DEL

to delete

the entire displayed address. Then
key in the desired address and
press

ENT

.

B. If this instruction is of a different instruction class, no parameters are

loaded. Key in the desired address and press

ENT

.

Once the instruction is accepted, the instruction immediately after the
instruction you wrote over is displayed.