Rockwell Automation 2707-NP DTAM Programming Software - Manual (Page 127)

A–B
15
Chapter
15-1
DTAM Plus Background Monitor
This chapter describes how to use the Background Monitor function
(available on the DTAM Plus only).
Section Page
Background Monitor 15-1
Background Monitor Screen 15-2
Creating a Background Monitor 15-3
Background Monitor Register Selections 15-5
The Background Monitor allows the DTAM Plus to monitor registers in the
SLC or PLC and display the appropriate alarm screen or execute a printer
form when the register values exceed the assigned limits.
Note: If the Advisor or data entry screens are active, the Background
Monitor is ignored. Print forms and alarms are not triggered until the data
entry screen is no longer displayed.
The Background Monitor is similar to the DTAM Plus advisor with these
differences:
•
The response to Background Monitor registers is 5 times slower than
the Advisor register. For critical alarms, the Advisor should be used.
•
The message triggered to alert an operator of an existing condition is
generated within the DTAM Plus, not the SLC or PLC. This means no
ladder logic programming is required for the DTAM Plus to operate
independently.
•
The number of screens or forms that can be triggered is determined by
the data type. The background monitor allows a total of four
background registers to be monitored.
If triggered by a bit status change in the SLC or PLC, up to 64
individual alarm screens or printer forms can be executed (4 registers
x 16 bits = 64 screens/forms).
If triggered by an Integer or BCD register, one screen is displayed for
each register. These register types allow an alarm or print form to be
triggered if the value of the register is outside defined limits.
Chapter Objectives
Background Monitor