Rockwell Automation 1747-PTxx Getting Started Guide for HHT - Manual (Page 22)

Chapter 2
Control Basics
Getting Started Guide
for HHT
2–5
There are three ways in which an external I/O address appears in this guide:
•
The five keyboard entries you make to enter the address in the HHT:
O:2/7
Output Data File Slot 2 Terminal 7
Delimiter Delimiter
•
The full address, as it appears in the HHT displays:
O0:2.0/7
Output Data File Slot 2 Terminal 7
Word 0 Data File 0
•
The convention we use to show the address in the ladder diagrams:
( )
O:2.0
7
Terminal 7
Word 0 Slot 2 Output Data File
HHT Display of Instructions/Addresses
The HHT displays I/O addresses as shown below.
F1 F2 F3 F4 F5
>
2.0.0.0.2
INS_RNG MOD_RNG SEARCH DEL_RNG UND_RNG
OFL
NO FORCE OTE:O0:3.0/0
<END>
] [ ( )
These numbers provide you with the follow-
ing ladder program information:
When you locate the cursor on an instruction (as
shown below), the HHT displays the instruction
address in the upper left corner of the display.
file number
rung number
nest level
branch level
instruction number (An asterisk
(*) means the cursor is not on
an instruction.)
Your programming device displays the full address.
For example, when you assign the address O:3/0,
the programming device will show it as O0:3.0/0
(output file, file 0, slot 3, word 0, terminal 0).
External I/O Addressing
Formats