Start–up and troubleshooting chapter 9 – Rockwell Automation 1771-KA2 Communication Adapter Module User Manual

Page 107

Start–up and Troubleshooting

Chapter 9

9-5

Table 9.A
SEARCH Functions - Industrial Terminal

Key Sequence

Response

Positions cursor on the following program instruction.

Positions cursor on preceding program instruction.

Displays previous rung.

Displays following rung.

Displays first rung of program.

Displays END statement of program.

Single rung display. (Press same key sequence to restore
multiple rung display.)

The specified instruction is displayed as it appears in one
location in the program. Press [SEARCH] to display other
locations where this instruction is used.

Displays output instructions which control the word xxx or any
of its 16 bits. After initially pressing this key sequence, simply
press [SEARCH] to display each other program location in
which word xxx or its individual bits are addressed. (EXAMINE
instructions not displayed by this SEARCH function.)

Legend:

A relay-type instruction which addresses a single bit. This
includes EXAMINE ON, EXAMINE OFF, OUTPUT ENERGIZE,
LATCH, and UNLATCH instructions.

An instruction which addresses a three-digit word. This includes all
Timer/Counter, GET/PUT, LES, EQU, IMMEDIATE I/O, and
Arithmetic Instructions.

Numeric key.

xxxxxx

xxx

xxxx

xxx

-[ B ]-

Display

Status Indication

The programming terminals provide a status indication for most program
instructions. For both the industrial terminal and the PLC program panel
(CRT), this status indication is similar. With these terminals, an
instruction symbol is intensified when the instruction is logically TRUE.
For an input instruction, this means that the condition specified by the
instruction has been met. For an output instruction, this means that the
instruction is being carried out.

An EXAMINE ON instruction, for example, is intensified when the
corresponding input device is ON. This means that the memory bit
addressed by the instruction is ON. Conversely, an EXAMINE OFF
instruction is intensified when the memory bit it addresses is OFF.