Rockwell Automation 1771-CFM,D17716.5.99 CONFIGURABLE FLOWMET - Manual (Page 18)

1–8 Overview of the CFM Module
Publication 1771Ć6.5.99 - December 1995
Implementing Application Features
You can use the CFM module to implement programmable
application features that are usually initiated by your PLC processor.
This frees the PLC processor to do other tasks and helps increase the
overall throughput of your PLC system.
This feature Is used in these modes To Alarm is ON when
overflow indication Totalizer
set an overflow flag when the count is greater
than the highest allowable count
(programmable Ċ rollover). This bit will toggle count = rollover
overflow indication Totalizer
Nonresettable Totalizer
(programmable rollover). This bit will toggle
with each successive rollover (0Ć1Ć0Ć1Ć0Ć1).
The count continues from zero. This bit can be
reset in the BTW configuration block.
count rollover
(default 10,000,000)
l ll
activate overrange alarm when rate is greater
f 100kH overrange alarm all
activate overrange alarm when rate is greater
than allowable Hertz (fixed at 100kHz)
frequency > 100kHz overrange alarm all
than allowable Hertz (fixed at 100kHz).
frequency > 100kHz
overspeed alarm all
activate overspeed alarm when frequency is
higher than userĆspecified frequency value.
frequency > userĆspecified value
acceleration alarm all
activate acceleration alarm when acceleration is
greater than userĆspecified acceleration value.
|acceleration| >
userĆspecified value
Install the
CFM Module
2
What's Next