User guide

Chapter 12
Monitoring Controller Operations
12–2
True/False Indication
Once the processor is operating in the Run or Test mode, the ladder program
indicates the logical state of the instructions, either true or false.
In the previous display and on the following pages, true instructions and the
program cursor appear as follows:
• true instructions are intensified (heavier line weight)
• the cursor is the blinking reverse video block
• a true instruction at the cursor location flashes between the intensified
instruction and the reverse video block
This section describes the types of data files, where to access them in the
HHT, and how to monitor them.
Data Files
These files contain information used in your ladder program. Data table files
include:
• Data File 0 – Output
• Data File 1 – Input
• Data File 2 – Status
• Data File 3 – Binary or Bit
• Data File 4 – Timer
• Data File 5 – Counter
• Data File 6 – Control
• Data File 7 – Integer
• Data File 8– Reserved file
• Data Files 9–255 – User created files. They can be bit, timer, counter,
control, and integer files.
When offline, use data files 3–255 to set up sequencers, math routines,
“recipes,” and look-up tables. When online, use data files to reset timers and
counters, and sequencers to test and/or troubleshoot.
Monitoring Data Files