Allen-Bradley POINT I/O 1734-VHSC5 User manual

Very High-Speed
Counter Modules
1734-VHSC5 and 1734-VHSC24
User Manual

Important User Information
Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application,
Installation and Maintenance of Solid State Controls (Publication SGI-1.1
available from your local Rockwell Automation sales office or online at
http://literature.rockwellautomation.com) describes some important
differences between solid state equipment and hard-wired electromechanical
devices. Because of this difference, and also because of the wide variety of
uses for solid state equipment, all persons responsible for applying this
equipment must satisfy themselves that each intended application of this
equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect
or consequential damages resulting from the use or application of this
equipment.
The examples and diagrams in this manual are included solely for illustrative
purposes. Because of the many variables and requirements associated with any
particular installation, Rockwell Automation, Inc. cannot assume responsibility
or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to
use of information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without
written permission of Rockwell Automation, Inc., is prohibited.
Throughout this manual, when necessary we use notes to make you aware of
safety considerations.
POINT I/O, POINTBus, and RSLogix 5000 are trademarks of Rockwell Automation.
ControlNet is a trademark of ControlNet International, Ltd. DeviceNet is a trademark of Open DeviceNet Vendor Association, Inc.
WARNING Identifies information about practices or circumstances
that can cause an explosion in a hazardous environment,
which may lead to personal injury or death, property
damage, or economic loss.
IMPORTANT Identifies information that is critical for successful
application and understanding of the product.
ATTENTION Identifies information about practices or circumstances
that can lead to personal injury or death, property
damage, or economic loss. Attentions help you:
•identify a hazard
•avoid a hazard
•recognize the consequence
SHOCK HAZARD
Labels may be located on or inside the equipment (for
example, drive or motor) to alert people that dangerous
voltage may be present.
BURN HAZARD Labels may be located on or inside the equipment (for
example, drive or motor) to alert people that surfaces may
be dangerous temperatures.

1Publication 1734-UM003B-EN-P - August 2005
Summary of Changes
Summary of Changes
This publication contains new and revised information not in the last
release.
New and Revised Information
See the table for a summary of the major changes in this manual.
Change Bars
We marked with change bars (as shown with this paragraph) the areas
in this manual that differ from previous editions and indicate the
addition of new or revised information.
Chapter Change
Preface Update of list of publications
Indication that for specifications and safety approval information
refer to the installation instructions
2 Addition of Before You Begin section
Addition of attention and warning statements
Appendix A Update on how to configure modules in RSLogix 5000 software

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Summary of Changes 2
Notes:

vPublication 1734-UM003B-EN-P - August 2005
Table of Contents
Preface
Preface
Purpose of This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
Who Should Use This Manual . . . . . . . . . . . . . . . . . . . . . . P-1
Related Products and Documentation. . . . . . . . . . . . . . . . . P-1
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-3
Chapter 1
About the Modules
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 1-1
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Counter Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Encoder Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Period/Rate Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Operation of Scalar . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Rate Measurement Mode . . . . . . . . . . . . . . . . . . . . . . . 1-7
New Data Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Default Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Operating Mode Features . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Chapter 2
Install the Modules
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 2-1
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Install the Mounting Base Assembly. . . . . . . . . . . . . . . . . . 2-1
Install an I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Install the Removable Terminal Block . . . . . . . . . . . . . . . . 2-4
Remove a Mounting Base . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Wire the Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Chapter 3
Input and Output Data
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 3-1
Data Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Detailed Description of Data Table Information . . . . . . . . . 3-2
Stored/Accumulated Channel Data (Input Word 2) . . . . 3-2
Module/Channel Status and Programming Error Codes
(Input Words 3 and 4) . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

vi Publication 1734-UM003B-EN-P - August 2005
Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Counter Configuration (Configuration Word 1) . . . . . . . 3-5
Filter Selection (Configuration Word 2 . . . . . . . . . . . . . 3-5
Decimal Position (Configuration Word 3) . . . . . . . . . . . 3-6
Word 4 is reserved. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Time Base and Gate Interval (Configuration Words
5 and 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Scalar (Configuration Word 7) . . . . . . . . . . . . . . . . . . . 3-7
Scalar Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Rollover (Configuration Word 8). . . . . . . . . . . . . . . . . . 3-7
Preset (Configuration Word 9) . . . . . . . . . . . . . . . . . . . 3-7
Safe State Values (Configuration Word 10) . . . . . . . . . . 3-8
Communicate Real Time and Nonreal Time Information. . . 3-8
Chapter 4
Configure Your Module
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 4-1
Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Add the Adapter to Your Network . . . . . . . . . . . . . . . . 4-1
Add I/O Modules to Your Network. . . . . . . . . . . . . . . . 4-2
Set Counter Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Check I/O Status and View/Edit the EDS File. . . . . . . . . . . 4-6
Chapter 5
Access Instantiated Instances
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 5-1
Use Instantiated Instances . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Chapter 6
Troubleshoot with the Indicators
Use the Indicators for Troubleshooting . . . . . . . . . . . . . . . 6-1
Appendix A
Configure Modules in
RSLogix 5000
What This Appendix Contains . . . . . . . . . . . . . . . . . . . . . . A-1
Understand Data, Connection, and Communication Formats A-1
Configure Your Module. . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Use the Help Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Work with the Fault/Program Action Dialog. . . . . . . . . . . . A-4
Work with the Counter Configuration Dialog . . . . . . . . . . . A-6
Work with the Output Configuration Dialog. . . . . . . . . . . A-10
Index

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Preface
Purpose of This Manual
Read this manual for information about how to install, configure, and
troubleshoot your module.
Who Should Use This
Manual
You must be able to use RSNetWorx software or similar configuration
software to set up and calibrate these modules. You must have the
capability to download and use Electronic Data Sheet files.
We assume you know how to do this in this manual. If you do not,
refer to your software user manuals or online help before attempting
to use these modules.
For This Information See
About the Modules Chapter 1
Install the Modules Chapter 2
Input and Output Data Chapter 3
Configure Your Module Chapter 4
Access Instantiated Instances Chapter 5
Troubleshoot with the Indicators Chapter 6

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Preface 2
Related Products and
Documentation
For specification, safety approval, and other information refer to the
following.
•Publication Number 1734-IN003
5V and 24V Very High-speed Counter Modules
Installation Instructions
For related 1734 products and documentation see the table.
Description Cat. No. Publication
Analog Input Modules
Installation Instructions 1734-IE2C 17340IE2V 1734-IN027
Analog Output Modules
Installation Instructions 1734-OE2C 1734-OE2V 1734-IN002
DeviceNet Communication Interface
Installation Instructions 1734-PDN 1734-IN057
Field Potential Distributor
Installation Instructions 1734-FPD 1734-IN059
POINT I/O 24V dc Expansion Power Supply
Installation Instructions 1734-EP24DC 1734-IN058
POINT I/O Selection Guide 1734 series 1734-SG001
Protected Output Module s
Installation Instructions 1734-OB2E 1734-OB4E
1734-OB8E
1734-IN056
Relay Output Modules
Installation Instructions 1734-OW2 1734-OW4 1734-IN055
Sink Input Modules
Installation Instructions 1734-IB2 1734-IB4
1734-IB8
1734-IN051
Source Output Modules
Installation Instructions 1734-IV2 1734-IV4
1734-IV8
1734-IN052
Wiring Base Assembly
Installation Instructions 1734-TB 1734-TBS 1734-IN511
Wiring Base Assembly
Installation Instructions 1734-TB3 1734-TB3S 1734-IN013

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Preface 3
Definitions
The following define the intended operation of the module.
Term Definition
Lead Breakage Typically requires a shunt resistor (across the load) to detect
3 levels of current/input states -
•Open (Wire Off, Device = ?)
•Off (Wire OK, Device Off)
•On (Wire OK, Device On)
This method does not check the input against a time base,
only that the device wiring (current loop) is intact.
Missing Pulse Typically usesan inputpulsetoresetawatchdogtimer(fixed
or programmable HW). This method does detect Lead
Breakage, since a broken wire will time-out the watchdog.
Zero Frequency Typically uses an input pulse to calculate an input frequency
and verify it is above an error threshold. This method does
detect Lead Breakage, since a broken wire will generate a
0Hz frequency.
Missing Pulse or Zero Frequency will also detect a customer
devicestuckhighorlow,sincethecounterismonitoringfora
change in the input state. Currently, the Counter/Encoder
Modes do not have Zero Frequency Detection - the A and B
inputs are time independent, only looking for input edge
changes to increment/decrement the count value.
The Period/Rate and Continuous Rate modes do have Zero
Frequency Detection, since the Z input is monitored for Zero
Frequency in Firmware (A and B inputs are not used and not
monitored).
The Rate Measurement mode inherently has Zero Frequency
Detection, since no A pulses in any sample period are = 0Hz
(B and Z inputs are not used and not monitored).

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Preface 4
Operational Mode Zero Frequency Detection Input Monitored
Counter No None
Encoder No None
Period/Rate Yes Z Only
Rate Measurement Y A Only

1Publication 1734-UM003B-EN-P - August 2005
Chapter 1
About the Modules
What This Chapter Contains
Read this chapter to learn about types, features, and capabilities of the
encoder/counter modules.
Module Description and
Features
The modules install into the POINT I/O terminal base (1734-TB or
1734-TBS) and interface with the Point I/O DeviceNet Pass-through
(1734-PDN) or the Point I/O DeviceNet Adapter (1734-ADN).
A module serves as a signal conditioner, function block, and counter
between the customer process signals on the terminal base and the
POINTBus containing the command information. The main functional
blocks are the following.
•Customer digital I/O interface
•Counter ASIC
•Microprocessor
The module accepts feedback from the following.
•Encoders (either single ended or differential)
•Pulse generators
•Mechanical limit switches
•Frequencies up to 1 MHz
A filter is available with the following settings.
•50 Hz
•500 Hz
•5 kHz
•50 kHz)
Turn the filter off to achieve the fastest counting rate. The input
voltage range is 5Vdc (VHSC5) or 15-24V dc (VHSC24). The module
returns the count or frequency in the form of a 24 bit binary number
(0 - 16,777,215) expressed in a 32 bit long word.
Each counter has a user-selectable preset and rollover value
associated with it.
The module has 2 outputs that access customer power from the
POINTBus to facilitate various output device voltage requirements.

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1-2 About the Modules
The outputs are rated to source 0.5A at 10 to 28.8V dc. The output
may be tied to an input. This lets you cascade counters of multiple
1734-VHSC modules. The counter has 4 user-selectable On-Off values
(windows) associated with it. Tie either output to any or all of the
window signals.
Operating Modes
The modules operate in the modes shown in the table.
The operation of the counter and encoder modes is nearly identical.
The difference between the two modes is in the type of feedback
(single-phase versus two-phase) for the count direction (up or down).
In encoder mode, a transition is expected on the B input for
counting to proceed in a direction; whereas, in counter mode, the B
input may be left at a static level.
You select all operating modes by writing appropriate configuration
data to the module.
Counter Mode
The counter mode reads incoming pulses and returns a binary
number (0 - 16,777,215max) to the POINTBus. The counter mode only
accepts single-phase inputs. The module determines the Phase B
input state, and counts up or down accordingly.
Mode Description
Counter Mode Read read incoming single-phase pulses, return a
binary count.
Encoder Mode Read incoming two-phase quadrature pulses, return
a binary count.
Period/Rate Mode Count internal clocks during the On period, return a
frequency. Outputs updated only at the end of the
period.
Continuous/Rate Mode Count internal clocks during the On period, return a
frequency. Outputs are updated continuously during
the period.
Rate Measurement Mode Read pulses during the sample period, return a
frequency.
PWM Mode (pulse width
modulation) Generate a pulse width modulated signal.

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About the Modules 1-3
Channel A input is used as the counting pulse while channel B is used
to determine the direction.
[B = High, Count = Down; B = Low or floating (not connected), Count
= Up]
The Channel B input may be tied high or low for unidirectional
counting, or toggled for bidirectional counting.
EXAMPLE
Example of Counter Mode
Encoder Modes
The encoder mode reads incoming pulses and returns a binary
number (0 - 16,777,215max) to the POINTBus. The encoder mode
only accepts two-phase quadrature inputs. The module senses the
relationship between the 2 phases, and counts up or down
accordingly.
There are two basic encoder types, absolute and incremental. A
single-output incremental encoder is called a tachometer encoder. A
dual channel incremental encoder with one channel leading the other
by 90°is called a quadrature encoder.
A system using a quadrature encoder may include an optional zero
pulse, or index, serving as a reference mark for system reset. The
principal disadvantage of a system using incremental encoders is that
a power interruption causes the loss of position reference, so a system
must be reinitialized or returned to a known zero position.
A Input
B Direction
Z (StoreCount)
S
inglePhase Pulse Generator 1734-VHSC
InputA
InputB
123
A
Input
B
Input
C
ount
(Gate / Reset )
210
CountUp CountDown
InputZ
0
Outputs
Updated
Continuously

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1-4 About the Modules
Absolute encoders typically have higher speed requirements (200 KHz
typical) for motion control applications. An absolute encoder has a
unique code associated with each position, so the exact position is
always known, even if the system power is turned off.
EXAMPLE
Example of Multiplying Encoder Mode X1, X2 and X4
X1 Multiplying Encoder Mode
Quadrature input signals are used to count on the leading (up
direction) or trailing (down direction) edge of A for a bidirectional
count, and channel B is used to determine the direction.
[ B = leads A, Count = Down; B = follows A, Count = Up ]
X2 Multiplying Encoder Mode
Quadrature input signals are used to count on leading and trailing
edges of A for a bidirectional count, and channel B is used to
determine the direction.
[ B = leads A, Count = Down; B = follows A, Count = Up ]
A
B
Quadrature Encoder 1734-VHSC
Input A
Input B
123
135246
1352467 10981211
A
Input
B
Input
X
1 Count
X
2 Count
X
4 Count
210
531420
11 9 710 8 6 5 23401
Forward Rotation Reverse Rotation
Input Z
Outputs
Updated
Continuously
Z (Store Count)
(Gate /Reset )

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About the Modules 1-5
X4 Multiplying Encoder Mode
Quadrature input signals are used to count on leading and trailing
edges of A and B for a bidirectional count, and channel B is used to
determine the direction.
[ B = leads A, Count = Down; B = follows A, Count = Up ]
Period/Rate Mode
The Period/Rate mode returns an incoming frequency and a total
accumulated count to the POINTBus, by gating an internal 5 MHz
internal clock with an external signal.
This mode determines the frequency and total number of input pulses
by counting the number of internal 5MHz clock pulses over a
user-specified number of input signal pulses. At the end of the
specified number of pulses, the module returns the frequency
(0 - 1 MHz). When the frequency is updated, both outputs are
checked against their associated presets.
EXAMPLE
Example of Period/Rate Mode
A ( Not Used )
B ( Not Used )
Encoder / PulseGenerator
1734-VHSC
Input A
Input B
Z Input( Pulse )
5 MHz Internal
(Gate /Reset ) Input Z
Z
Accumulated Count
1
Scalar
5 MHzClk
SamplingClock
A
ssumes symmetrical pulse, 50% dutycycle, soPeriod = SampleTime On X 2 {On & Off}
10 20
F
requency= 1 /Period If Count = 20, Scalar = 1, and Clock Period = ( 1 / 5 MHz )
F
requency= 1 /[ ( 20 / 1 ) X ( 1 / 5 MHz ) X 2 ] = 125 kHz
Frequency& Outputs
Updated Here

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1-6 About the Modules
As the frequency of the incoming pulse train at the Z (Gate/Reset)
terminal increases, the number of sampled pulses from the 5MHz
clock decreases. Since accuracy is related to the number of pulses
received over the sample period, the accuracy decreases with
increasing frequencies at the Gate/Reset terminal. Refer to the
following Scaling table.
Scaling the input frequency through the use of a scalar can lessen the
decrease in accuracy. A scalar value of 1 returns an accurate input
frequency if incoming input pulses have a 50% duty cycle.
Operation of Scalar
In the Period/Rate mode, the scalar lets the incoming pulse train at the
Z Gate/Reset pin be divided by a user-defined number. There is one
scalar value for each counter. Acceptable values for the scalar are 1,
2, 4, 8, 16, 32, 64, and 128. The default value for each scalar is 1.
Note that a 0 scalar is equivalent to a 1.
The product of the Sample Period times the scalar should be less than
6.71 seconds in order to avoid a zero frequency detect indication.
(5 MHz sample time = 200ns; 16,777,216 counts x 200ns x 2 half cycles
of Z = 6.71 seconds)
Relationship Between Sampled Pulses and Input Frequency
Input Frequency at Z Gate/Reset Terminal Sample Pulses for 1/2 Cycle of Z Gate/Reset Pulse
2.5 Hz 1 M
5 Hz 500 k
10 Hz 250 k
20 Hz 125 k
50 Hz 50 k
100 Hz 25 k
200 Hz 12.5
500 Hz 5 k
1k Hz 2.5 k
2 Hz 1.25 k
5 kHz 500
10 kHz 250
20 kHz 125
50 kHz 50
100 kHz 25

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About the Modules 1-7
Continuous/Rate Mode
The Continuous/Rate Mode returns an incoming frequency and a total
accumulated count to POINTBus, by gating an internal 5 MHz internal
clock with an external signal.
Similar to the Period/Rate mode except outputs in this mode are
updated continuously. This mode determines the frequency and total
number of input pulses by counting the number of internal 5 MHz
clock pulses over a user-specified number of input signal pulses. Each
output is turned on as soon as the turn-on count is reached, and
turned off as soon as the turn-off count is reached. As the internal 5
MHz clock is counted, the outputs dynamically track the 5 MHz count.
EXAMPLE
Example of Continuous/Rate Mode
As the frequency of the incoming pulse train at the Z Gate/Reset
terminal increases, the number of sampled pulses from the 5 MHz
clock decreases. Since accuracy is related to the number of pulses
received over the sample period, the accuracy decreases with
increasing frequencies at the Gate/Reset terminal. (Refer to the
“Operation of Scalar” information and table in the Period/Rate Mode.)
A( Not Used )
B ( Not Used )
E
ncoder / PulseGenerator
1734-VHSC
Input A
Input B
Z
Input( Pulse )
5
MHz Internal
(Gate /Reset ) Input Z
Z
A
ccumulated Count 1
Scalar
5 MHzClk
S
amplingClock
Assumes symmetrical pulse, 50% duty cycle, so Period = Sample Time On X 2 {On &Off}
10 20
Frequency= 1 /Period If Count = 20, Scalar = 1, and Clock Period = ( 1 / 5 MHz )
Frequency= 1 / [ ( 20 / 1 ) X ( 1 / 5 MHz ) X 2 ] = 125 kHz
Outputs Updated
Continuously
Frequency
Updated Here

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1-8 About the Modules
Rate Measurement Mode
The Rate Measurement mode determines the frequency and total
number of input pulses over a user-specified sample period. At the
end of the interval, the module returns a value representing the
sampled number of pulses and a value indicating the incoming
frequency.
When you update the count and frequency, you check any associated
outputs against their associated presets. Frequency is calculated by
dividing the accumulated count by the user-selected time period, and
is returned in the read data. Allowable time periods are 10 ms to 3 s in
10 ms increments, with a default value of 1 s. Note that a 0 time
period is equivalent to the 1 s default.
EXAMPLE
Example of Rate Measurement Mode
Pulse Width Modulation (PWM) Mode
The Pulse Width Modulation mode uses the counter to generate a
continuous rolling sequence of numbers. The real-time PWM value
written to the module is converted to a window edge so that a
variable duty-cycle signal can be generated. The counter resets to zero
based upon the PWM period programmed into the module. Any
output tied to Window 0 transmits the PWM signal.
A Input
B ( Not Used )
Encoder/Pulse Generator
1734-VHSC
Input A
Input B
A Input( Pulse )
Internal Sampling Gate
(Gate /Reset ) Input Z
Z ( Not Used )
User Selectable Sample Period,
If Sample Period is 50ms, and Count = 3, then Frequency= 3 /50ms = 60Hz
Accumulated Count 1
Time Base
23
FrequencyCalculated,
Outputs Updated Here
10ms to 2s in 10ms increments.

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About the Modules 1-9
New Data Indicator
A two-bit counter, C1 and C0, is updated every time an event occurs,
indicating that new data is available in the Stored/Accumulated Count
words. Events are defined as:
Any active gate transition in any of the Store Count (Counter or
Encoder) modes
The end of the gate sample period in either the Period / Rate,
Continuous / Rate or PWM modes
The end of the programmed sample period in the Rate
Measurement mode
To use these bits reliably, acquisition of data from the counter module
must occur faster than the events, which cause C1/C0 to increment.
When C1/C0 is updated, a change of state (COS) message can be sent.
Default Configuration
The module default configuration on startup are the following.
•Counter mode
•50 Hz filter on A, B, and Z
•No time base
•Active Output Assembly = 105
•Rollover = 0x00FFFFFF
•Preset = 0
•No scalar
•Output 0 untied
•Output 1 untied
•Window comparators = 0
•Counter Control Safe State = 0
•Output Control Safe State = 0
To modify the default settings to those required for your application,
refer to the appropriate section of this publication.

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1-10 About the Modules
Operating Mode Features
See the table for a summary of features active in each mode.
Operating Mode Features
The Z Gate/Reset Terminal operates in one of four modes when the
Store Count feature is in use. The four figures below detail the
operation in each mode.
Store Count Mode 1: Store/Continue
In mode 1, the rising edge of a pulse input on the Z Gate/Reset
terminal causes the current counter value to be read and stored in the
Read Data file. The counter continues counting. The stored count is
available in the Stored/Accumulated Count word. The stored count
information remains until it is overwritten with new data.
Store/Continue
Operating Feature Counter
Up / Down Encoder X1, X2 & X4 Period /Rate Continuous /Rate Rate Measurement PWM
Preset Y Y N N N N
Rollover Y Y N N N N
Software Reset Y Y Y Y Y Y
Store Count -
Z Gate / Reset
4 modes
YYNN N N
Scale Input Count at
Z Gate / Reset NNYY N N
Z Gate / Reset Invert Bit Y Y Y Y N N
Enable /Force Outputs Y Y Y Y Y Y
Assign Outputs Y Y Y Y Y Y
Operate Outputs
(Based On) Y (Count) Y (Count) Y (Count) Y (Count) Y (Count) Y (PWM Value)
Sample Period N N N N Y Y
R
ead, Store Count,
a
nd Continue Counting