High Speed Counter Types

High Speed Counter Types
1
Special Applications Modules
IC697HSC700
59
High Speed Counter
GFK-1057D
August 1997
Special Applications Modules
High Speed Counter (IC697HSC700)
datasheet GFK-1057D
Features
D
D
D
D
a45425
Single slot module
Five selectable counter types
12 single-ended or differential inputs
TTL, Non-TTL and Magnetic Pickup input
thresholds
OK
O1
O2
O3
O4
D Four positive logic (source) outputs with LED
D
D
D
D
D
D
indicators
HIGH SPEED
COUNTER
External oscillator
Built-in +5 VDC output
Software configuration
5/12/24 VDC
Internal module diagnostics
Module OK and Output State LEDs
Removable terminal strip for field wiring
connections
Configuration is done using the configuration function
of the MS-DOSr or Windowsr programming software
running on Windowsr 95 or Windows NTr over Ethernet TCP/IP or through the SNP port. The Programming
Software configuration function is installed on the programming device. The programming device can be an
IBMr XT, AT, PS/2r or compatible Personal Computer.
I1
I2
I3
I4
I5
I6
I7
I8
I9
I10
I11
Functions
The IC697 High Speed Counter (HSC) module, catalog
number IC697HSC700, directly processes rapid pulse
signals up to 200 KHz (800 KHz for Type E in A Quad B
mode). The module is able to sense inputs, process
input count data, and control its outputs without
communicating with the PLC CPU. The HSC has a
simple and user-friendly PLC interface that makes it
extremely useful in industrial applications such as:
h
h
h
h
h
h
I12
O1
O2
O3
O4
01–04 1.0A @ 12/24VDC
01–04 0.02A @ 5 VDC
4.0A MODULE
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OK
O1
O2
O3
O4
HIGH SPEED COUNTER
5/12/24 VDC
1
I1
2
3
I2
4
5
I3
6
7
I4
8
SHIELD
9
INCOM
10
11
I5
12
13
I6
14
15
16
I8
I7
17
18
SHIELD
I9
INCOM
20
21
I9
22
23
I10
24
25
I11
26
27
I12
28
SHIELD
29
INCOM
30
31
5V
32
OSC
SHIELD
33
UNUSED
34
V L+ 35
Î
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V
O1
36
37
O2
O3
38
39
O4
OUTCOM 40
MODULE IC697HSC700
LABEL 44A726758–030R01
Turbine flowmeter
Meter proving
Velocity measurement
Material handling
Motion control
Process control
r IBM and PS/2 are registered trademarks of International Business Machines Corporation.
r MS-DOS, Windows, Windows 95, and Windows NT are registered trademarks of Microsoft Corporation.
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
59-1
Special Applications Modules
2
GFK-1057D
August 1997
High Speed Counter
Product Compatibility Requirements
Product
Version
IC697 CPU
5.50 or later (CPU models 781, 782,
914, 924)
MS-DOS Programming Software
5.0x or later
Windows Programming Software
1.0 or later
High Speed Counter Types
The High Speed Counter can be configured as one of
five types: A, B, C, D, or E. All counters have 12 inputs,
four preset outputs, and optional PLC ladder interrupt
capability.
Type A
In Type A configuration, the HSC has four identical and
independently programmable unidirectional 16-bit
counters, which can be configured for up or down
operation. Each counter has three inputs: Preload, Count
Pulse and Strobe.
Type B
In Type B configuration, the HSC has two identical and
programmable bi-directional 32-bit counters.
Each
counter can be independently configured to operate in
Up/Down, Pulse/Direction or A Quad B mode. Both
counters have two independent Strobe inputs and Strobe
registers. Each counter has a single Preload input to set
the accumulator and a Disable input to suspend counting.
This counter type can be configured to link strobes. In
this mode, a count on the Counter 2 inputs will strobe
both Counter 1 and Counter 2 Accumulator values into
their respective Strobe 1 registers. This feature can be
used to accurately measure a pulse rate against a
reference pulse or to compare two different pulse rates.
Type C
In Type C configuration, the HSC has one differential
bi-directional 32-bit counter with a Disable input to
suspend counting. It also provides a Home cycle to
initialize the accumulator to a pre-defined Home
Position. A Home Switch input and a Marker input are
used to indicate the Home Position to each counter
input. The configured Home value specifies the
accumulator value at the Home Position.
59-2
Two sets of bi-directional counter inputs can be
connected differentially. Each pair of inputs can be
configured for Up/Down, Pulse/Direction or A Quad B
mode. The Type C configuration has three Strobe
registers with Strobe inputs and two Preload values
with Preload inputs.
Type D
In Type D configuration, the HSC has four bi-directional
32-bit counters that can be configured to count in
Up/Down, Pulse/Direction, A Quad B x1, A Quad B x2, or
A Quad B x4 mode. Each counter has a marker input
which can be used to set its accumulator value to the
counter’s Home Position value. When configured in A
Quad B mode, the High Speed Counter detects and
reports quadrature errors.
Type E
The Type E counter contains two identical 16-bit
counters with Strobe and Preload inputs capable of
counting Up/Down or A Quad B signals. Each has a
Count Disable and a Strobe Disable input. The Type E
counter is designed primarily as a Down counter, but
can handle up counts to account for A Quad B jitter.
When a counter counts down to zero, it turns on a
dedicated preset output with a 5µs response.
Type A, B, C, and D
Operating Features
Operating features of the High Speed Counter for Types
A, B, C, and D are described below. Features that have
selectable parameters are configured using the MS-DOS
or Windows programming software configurator
function that has been installed on your programming
computer. For detailed information about selectable
features, refer to the High Speed Counter User’s Manual,
GFK-1062.
Count Rate
Maximum count rates are 200 KHz with the high
frequency filter and 30 Hz with the low-frequency filter.
Selectable Input Filters
The Count, Count Disable, and Preload inputs for
each counter can be configured for a high frequency
filter (2.5 microseconds) or a low-frequency filter
(12.5 milliseconds).
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
Special Applications Modules
3
GFK-1057D
August 1997
High Speed Counter
Continuous or Single-Shot counting
Each counter can be configured to operate in either
continuous or single-shot mode.
Continuous Counter Mode: If either the upper or lower
count limit is exceeded the counter wraps around to the
other limit and continues.
Single-shot Counter Mode: The counter counts to either
the upper or lower limit and stops. When the counter
is at the limit, counts in the opposite direction back it off
from the limit.
On and Off Preset values. There are four On/Off Preset
outputs which can be independently assigned to any
counter. An assigned output’s state indicates when the
counter Accumulator is between the defined On and
Off points. Output polarity can be configured to On
only between points or Off only between points by the
relative location of the On/Off Presets.
Selectable Preset Interrupts
Each Preset output can generate PLC interrupts from
On and/or Off transitions. Interrupts can be enabled for
either or both transitions of each Preset output.
Counter Accumulator
The Accumulator contains the current count value of
each counter. The CPU can read the accumulator value
or set it from the application program.
Counts per Timebase Register
Each counter stores the number of counts that have
occurred in a specified period of time. A timebase value
from 1 ms to 65535 ms can be configured.
Oscillator
The module provides an external oscillator output that
can be wired as a count input to any counter and used
as a timing reference for measurement. The 5V square
wave oscillator output can be configured to operate at
frequencies from 15 Hz to 1 MHz. This output has a
CMOS buffer with a 47 ohm output impedance.
Data Commands
Strobe Register
Type A, B and C counters have one or more Strobe
registers that capture the current Accumulator value
when a Strobe input transitions. The Strobe inputs are
edge-triggered and can be configured for positive-edge
or negative-edge response. The Strobe registers can be
configured to update at any Strobe trigger or only on
the first strobe trigger
The PLC can send data commands to the HSC through
%AQ data or with a COMMREQ. These commands
allow the user to dynamically modify counter operation
and configuration parameters.
Configuration
parameters that can be dynamically modified include:
accumulator value, counter limits, Preload values, On
and Off Preset values and Home Position.
Velocity Command
Preloads
Counters A, B and C have one or more Preload inputs.
The Preload inputs set the accumulator to a configured
Preload value. %Q bits sent from the PLC can also be
used to generate Preload and set the accumulator to the
configured Preload value.
A %AQ or COMMREQ Data Command can be used to
generate an internal velocity of up to 100,000 counts per
second. The counter accumulator will increment or
decrement at the commanded velocity.
Counts
generated by the user count inputs will be accumulated
in addition to the Velocity Command counts.
Selectable On/Off Output Presets
Accumulator Adjust
Counter output signals can be configured to be On or
Off when the count Accumulator reaches configured
A data command can be used to adjust the accumulator
value from –128 to +127 counts at any time.
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
59-3
Special Applications Modules
4
GFK-1057D
August 1997
High Speed Counter
Type E Operating Features
Counter Outputs
Operating features of the High Speed Counter for Type
E are described below.
The Type E counter supports two types of output
presets, Fast Response and Standard.
Count Rate and Input Filters
The maximum count rate with the low-frequency filter
(12.5 milliseconds) is 30 Hz; with the high-frequency
filter (2.5µs), the maximums are 200 KHz inUp/Down
mode and 800 kHz in A Quad B mode. The Count,
Count Disable, and Preload inputs for each counter can
use either filter, but the Strobe and Strobe Disable inputs
use only the high-frequency filter.
Continuous or Single-Shot Counting
Each counter can be configured to operate in either
continuous or single-shot mode.
Continuous Counter Mode:
When the counter
decrements to zero, it turns on the fast response output
and automatically preloads itself to the preload value
and continues counting.
Single-shot Counter Mode: When the counter counts to
zero, it turns on the fast response output and ignores
count pulses until a preload occurs.
Preloads
A rising edge on the Preload input, a rising edge on the
%Q Preload Accumulator bit, or the counter
decrementing to zero in Continuous mode will set the
accumulator to a configured Preload value. Preloads
caused by the Preload input and count decrementing to
zero will set a %I bit in the PLC to indicate a preload
occurred.
Fast Response: There is one dedicated fast response
output for each accumulator. The fast response output
turns on within 15µs of the associated counter
decrementing to zero, with less than 2µs variation. In
addition, two output modes are supported for the fast
response outputs.
Pulse Output Mode: The output turns on when the
Accumulator counts down to zero and stays on for a
configured duration, from 1 to 1000 milliseconds.
Latched Output Mode: (Single Shot mode only) The
output turns on when the Accumulator counts down to
zero and stays on until a Preload occurs.
Standard Output Presets: Outputs 3 and 4 can be
assigned to either counter and configured to be On or
Off when the count Accumulator reaches configured
On and Off values. An assigned output’s state indicates
when the counter Accumulator is between the defined
On and Off points.
Output Interrupts
Interrupts can be enabled or disabled for Off to On
transitions of the fast response outputs. Interrupts can
be enabled or disabled for either transition of the
standard preset outputs.
Oscillator
The module provides an external oscillator output that
can be wired as a count input to any counter and used
as a timing reference for measurement. The 5V square
wave oscillator output can be configured to operate at
frequencies from 15 Hz to 1 MHz. This output has a
CMOS buffer with a 47 ohm output impedance.
Strobe Register Stack
Each counter has a Strobe Register stack which will
store up to four strobe values. Strobes can be configured
to occur on rising, falling, or both edges of the Strobe
input. %I bits indicate how many strobes have
occurred. A Reset Strobes %Q bit or a Preload clears the
Strobe Register stack and %I indicators. A Strobe
Disable input causes all Strobe input transitions to be
ignored.
59-4
Data Commands
The PLC can send data commands to the HSC through
%AQ data or with a COMMREQ. These commands
allow the user to dynamically modify counter operation
and configuration parameters.
Configuration
parameters that can be dynamically modified include:
Preload values, On and Off Preset values, and Fast
Response output duration.
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
Special Applications Modules
5
GFK-1057D
August 1997
High Speed Counter
Location in a System
A High Speed Counter module can be installed in any I/O
slot in the CPU rack or in any I/O slot in an expansion rack
in a system. For interrupts to work, there can be no empty slots
between the CPU and the HSC. The following figure shows
two typical installations: (A) a High Speed Counter
installed in the CPU rack in a single rack installation and
(B), multiple High Speed Counter modules installed in an
expansion rack in a multiple rack system.
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SINGLE RACK CONFIGURATION
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CPU RACK
B
a47028
P
S
EXPANSION RACK
C B
P T
U M
P
S
B
R
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H H
S S
C C
EXPANSION RACK CONFIGURATION
Figure 1. Example of High Speed Counter Module Installation Configurations
Table 1. MODULE OK LED Status
Installing a High Speed Counter
State
For detailed instructions on how to install a High Speed
Counter module. refer to Installation Procedures in the
applicable Programmable Controller Installation Manual.
Also refer to the High Speed Counter User’s Manual.
Following is a basic description of the module (refer to
Figure 2 for location of hardware features).
Status Indication
Five status LEDs are viewable on the module as shown in
Figure 2. The function of each LED is as follows:
MODULE OK LED
The MODULE OK LED indicates current status of the
High Speed Counter module as described in Table 1.
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
OFF
ON
Description
When the MODULE OK LED is off, the High
Speed Counter module is not functioning. This
is the result of a hardware malfunction; for example, the diagnostic checks detected a failure,
or the PLC CPU is not present. Corrective action is required in order to get the module
functioningagain.
When the LED is on steadily, the High Speed
Counter module is functioning properly.
Normally, this LED should always be on,
indicating that the diagnostic tests were
successfully completed and the programming
software configuration data for the module is
correct.
The LED flashes at a 1 Hz rate when power-up
Flashing diagnostics have completed successfully and
the module is waiting for configuration. It also
flashes at a 4 Hz rate when an error
occurs. When the error is cleared, the LED will
return to being on steadily.
59-5
Special Applications Modules
6
GFK-1057D
August 1997
High Speed Counter
Output LEDs (O1 - O4)
a47050
These four LEDs indicate the ON/OFF state of the
corresponding module output circuit. The output
circuits can be used to drive indicating lights, solenoids,
relays, and other such similar devices. The LEDs are
either ON or OFF (output activated or not activated).
MODULE OK
OK
O1
O2
O3
O4
OUTPUT
CIRCUIT
STATUS
User Terminal Connector
HIGH SPEED COUNTER
5/12/24 VDC
The removable terminal strip has 40 screw terminals for
connection to field devices to the High Speed Counter
inputs and outputs. Pin assignments for field wiring
connections are provided in the following table. For
detailed information on how each signal applies to the
different counter types, refer to the High Speed Counter
User’s Manual.
1
I1
2
3
I2
4
5
I3
6
7
I4
8
SHIELD
9
INCOM
10
11
I5
12
Table 2. User Terminal Connector Pin Assignments
Pin
Number
Signal
Name
Pin
Number
Signal
Name
DETACHABLE TERMINAL
13
I6
14
STRIP FOR FIELD WIRING
CONNECTIONS
15
16
I8
I7
17
18
1
IN1P
21
IN9P
2
IN2P
22
IN10P
3
IN1M
23
IN9M
4
IN2M
24
IN10M
5
IN3P
25
IN11P
6
IN4P
26
IN12P
7
IN3M
27
IN11M
8
IN4M
28
SHIELD
I9
INCOM
20
21
I9
22
23
I10
24
25
I11
26
27
I12
28
SHIELD
29
INCOM
30
31
5V
IN12M
32
OSC
SHIELD
33
UNUSED
34
9
SHIELD
29
SHIELD
V L+ 35
10
INCOM
30
INCOM
11
IN5P
31
OSC
12
IN6P
32
5VP
13
IN5M
33
SHIELD
14
IN6M
34
not used
15
IN7P
35
OUTPWR
16
IN8P
36
OUT1
17
IN7M
37
OUT2
18
IN8M
38
OUT3
19
SHIELD
39
OUT4
20
INCOM
40
OUTCOM
59-6
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O1
36
37
O2
O3
38
39
O4
OUTCOM 40
MODULE IC697HSC700
LABEL 44A726758–030R01
Figure 2. High Speed Counter Module - User Features
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
Special Applications Modules
7
GFK-1057D
August 1997
High Speed Counter
Recommended Field Wiring Procedures
The following procedures are recommended when connecting field wiring to the detachable terminal board on the High
Speed Counter module. Module features referenced in the
following procedures which are common to most IC697 I/O
modules are illustrated in the following figure.
a43855
JACKSCREW
HINGED
DOOR
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TERMINAL
BOARD
CORD
TIE
CORD
TIE
CLEAT
JACKSCREW
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CORD
TIE
CLEAT
CORD
TIE
STRAP
CLEAT
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STRAP
STRAP
Figure 3. I/O Module Features
1. Turn off power before removing or installing terminal boards. Open the hinged door on the module to access a jackscrew which holds the terminal
board securely in place. The detachable field wiring terminal board can now be removed from the
module by turning the jackscrew counter-clockwise until it is fully disengaged.
2. To remove the terminal board, grasp the top of the
terminal board and swing it outward.
Caution
Do not use the hinged door to remove the
terminal board. The hinged door could
be damaged if this is done.
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
3. The terminal board is designed to accept wire sizes
from AWG #22 (0.36 mm2) through AWG #14 (2.1
mm2). It is important that when using AWG #14
(2.1 mm2) wire for wiring all points, that a maximum insulation diameter of .135 inch (3.43mm)
not be exceeded. To ensure proper connection,
two wires may be terminated on any one terminal
only if both wires are the same size.
4. The terminal board is designed to accept a maximum of (40) AWG #14 (2.1 mm2)wires. If AWG
#14 (2.1 mm2) wires are to be used, then wire
markers should be placed at least 8 inches (203
mm) from termination end to provide sufficient
space for the hinged door to close.
59-7
Special Applications Modules
8
GFK-1057D
August 1997
High Speed Counter
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a43747
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DO NOT
PULL
ON DOOR
WIRE BUNDLE CABLE TIE CLEAT
Figure 4. Removal of I/O Terminal Board
5. After completing connections to all modules in a
rack, the wire bundle must be secured. To ensure
that the wire bundle is secured properly, it is recommended that a cable tie be wrapped around the
wire bundle and tightly secured through the cable
tie cleat located at the lower right corner of the
terminal board. For extremely large wire bundles,
additional cable ties should be used.
6. A door label insert is included with each module to
indicate circuit wiring information and provide
space to record user circuit wiring identification.
A slot is provided on the hinged door to allow for
insertion of this label. If the label is difficult to insert, crease the scored edge before insertion. The
outside label has a color coded stripe to allow
quick identification of the module voltage type
(blue: low voltage; red: high voltage).
7. After field wiring is completed, the terminal board
should be securely fastened to the rack by inserting the terminal board strap (attached to each
module) into the small rectangular slots in the bottom card guide grill on the rack. This strap not
59-8
only secures the terminal board to the rack, it also
provides a way of identifying the wired terminal
board with its correct mating rack slot location.
8. For adequate module ventilation, it is recommended that at least a 6 inch (152mm) clearance be
allowed above and below the rack grill. Wire
bundles should not obstruct the rack grill work.
Removing an I/O Module
The instructions below should be followed when removing an I/O module from its slot in a rack.
D Grasp the board firmly at the top and bottom of
D
D
the board cover with your thumbs on the front of
the cover and your fingers on the plastic clips on
the back of the cover.
Squeeze the rack clips on the back of the cover
with your fingers to disengage the clip from the
rack rail and pull the board firmly to remove it
from the backplane connector.
Slide the board along the card guide and remove it
from the rack.
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
Special Applications Modules
9
GFK-1057D
August 1997
High Speed Counter
Table 3. Specifications for IC697HSC700 [
General:
ModuleOperating Voltage
5 VDC (from backplane)
ModuleCurrent Drain
1A + (10 mA x number of ON outputs) + (1.6 x
encoder current)
Maximum Count Rate
Types A - D, and Type E in Up/Down mode
Type E in A Quad B mode
200 KHz
800 KHz
Output Points
Powered by user supplied 5V, or 10 to 30 VDC
LEDs
MODULE OK and O1 - O4 (Output circuit. status)
Input and Output Isolation
Peak (1 second)
SteadyStatus
1500 volts
30 V AC/DC
Inputs
VoltageRange
TTL
5 VDC
Non-TTL
10 to 30 VDC
Magnetic Pickup (I1 to I4 only)
400 mV
TTL
Non-TTL
Von
1.4V
8.0V
400 mV
Voff
0.8V
5.0V
200 mV
Input Thresholds (I1 to I12)
Encoder Power
Magnetic Pickup
5 VDC, 500 mA @40°C (104°F), 300 mA @60°C
(140°F)
Input Filter Delay
IN1 to IN8
10 ms or 2 µs selectable
IN9 to IN12
2 µs
Input Impedance
6000 ohms
Input Hysteresis
250 mV typical
Input Cable
Shielded cable recommended
Maximum length: 30 meters (100 feet)
Outputs
t
Output Type
Positive Logic, optically isolated
Maximum Supply Voltage
30.0 VDC
Maximum Output Current at 60°C (140°F)
1.0 A for each output using 10 to 30 VDC supply
Output Current using 5 VDC supply
20 mA typical
Inductive Load Clamp Voltage
–8.0 V typical
OFF State Leakage Current
10 µA for each output
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
59-9
Special Applications Modules
10
GFK-1057D
August 1997
High Speed Counter
Table 3. Specifications for IC697HSC700 (continued)
Output Response Time
Type A - D, Type E Slow Response
300 µs typical
650 µs worst case
24 Volts:
Type E Fast Response
On:
Off:
5 Volts
On:
Off:
Output Response Variation
Slow Response
Fast Response
7 µs typical
10 µs worst case
56 µs typical
10 µs typical
15 µs worst case
63 µs typical
650 µs worst case
1 µs worst case
Output Protection
5.0 A fuse (5x20mm replaceable) common to all
outputs
VME
System designed to support the VME standard C.1
[ Refer to GFK-0867B, or later for product standards and general specifications. For installations requiring
compliance to more stringent requirements (for example, FCC or European Union Directives), refer to
InstallationRequirements for Conformance to Standards.
Table 4. Ordering Information
Description
Catalog Number
High Speed Counter Module
IC697HSC700
Note: For Conformal Coat option, or Low Temperature Testing option please consult the
factory for price and availability.
59-10
t
Series 90 -70 Programmable Controller Data Sheet Manual
GFK-0600F
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