Publication 1757-RM810A-EN-P - May 2002
Functional Blocks 3-73
Pulse Input Channel/Module Blocks
PICFASTCUTOFF (Pulse Input Channel with Fast Cutoff)
Description Standard Interface to channels 6-7 of the Pulse Input IOM.
Function The three main functions of channels 6-7 are:
• Pulse Count (PULSECOUNT) – both raw count and Engineering Unit converted values.
• Frequency value (PV) in Engineering Units
• Digital Output (fast cutoff)
Inputs If the Pulse Input Channel with Fast Cutoff is running it fetches AVRAW, AV, PV, TV and SO from its associated Pulse
Input Module. If the associated IOM does not exist in the CPM, fail-safe values are set.
Outputs After Input Processing, the Pulse Input Channel with Fast Cutoff will send commands to the IOM function block.
If multiple commands are sent to the device, the execution order in the Pulse Input firmware will be:
1. Reset Counter
2. Write Output Value
3. Write Target Value
Associated
Block
1757-PIM and Pulse Input Totalizer.
Parameters AV
AVRAW
AVRAWSTS
AVSTS
BADCODE
BADSO
C1
C2
C3
DEBUG
EDGEDETECT
EXECCOUNT
FETCHMODE
FREEZETIME
FREQPERIOD
IOCNUMBER
IOCTYPE
IOMCONN
ORDERINCM
PULSEMODE
PV
PVSTS
PVVALSTS
RESETFL
SAFEOUTPUT
SO
SOCMDOFF
SOCMDON
TIMEBASE
TV
TVPROC
VOLTAGE
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