User guide

Chapter 7
Creating and Editing a Program File
7–16
Modifying Instructions
In the previous example you modified a rung by adding an instruction to the
rung. Another function available in the HHT is the ability to modify
instructions. Instructions may be edited by changing the address and/or
changing the type of instruction. The following examples show you how to
do both.
Changing the Address of an Instruction
Change the address of the second examine if closed instruction, in the first
rung (rung 0) of the program, from I:1.0/2 to I:1.0/1. The new rung should
appear as follows:
] [
I:1.0
0
( )
O:3.0
0
] [
I:1.0
1
Change this address.
1. From the previous save and continue display, press [ENTER]. The
following display appears:
F1 F2 F3 F4 F5
>
2.0.0.0.*
INS_RNG MOD_RNG SEARCH DEL_RNG UND_RNG
OFL
] [
( )
] [
] [
] [
( )
<END>
2. To change the address of the second examine if closed instruction, press
[→] twice.
3. With the cursor positioned on the examine if closed instruction with
address
I1:1.0/2, press [F2], MOD_RNG. The following display
appears:
] [
F1 F2 F3 F4 F5
2.0.0.0.2
OFL
] [
( )
] [
] [
( )
<END>
>
INS_INST BRANCH MOD_INST ACP_RNG
XIC:I1:1.0/2
NO FORCE
II