Contec F&eIT Series User manual

F&eIT Series
Isolated Counter Module
CNT24-2(FIT)GY
User’s Manual
CONTEC CO., LTD.

CNT24-2(FIT)GY i
Check Your Package
Thank you for purchasing the CONTEC product.
The product consists of the items listed below.
Check, with the following list, that your package is complete. If you discover
damaged or missing items, contact your retailer.
Product Configuration List
- Module …1
- First Step Guide …1
- Disk *1 [F&eIT Series Setup Disk] …1
- Interface connector plugs …2
- Warranty Certificate…1
- Serial Number Label …1
*1 The bundled disk contains various software and User’s Manual (this manual)
Interface connector plugs
Module
Disk
First step guide [F&eIT Series Setup Disk]
CN T24- 2
Devic e
ID
ABZ D1
CH0
PCOM
PA
PB
PZ
PD1
EQ.P
EQ
EQ.N
0
4
0
4
6
2
PCOM
PA
PB
PZ
PD1
EQ.P
EQ
EQ.N
CH0
CH1
CH1
Warranty
Certificate
Serial Number
Label

ii CNT24-2(FIT)GY
Copyright
Copyright 2001 CONTEC CO., LTD. ALL RIGHTS RESERVED
No part of this document may be copied or reproduced in any form by any means
without prior written consent of CONTEC CO., LTD.
CONTEC CO., LTD. makes no commitment to update or keep current the information
contained in this document.
The information in this document is subject to change without notice.
All relevant issues have been considered in the preparation of this document. Should
you notice an omission or any questionable item in this document, please feel free to
notify CONTEC CO., LTD.
Regardless of the foregoing statement, CONTEC assumes no responsibility for any
errors that may appear in this document or for results obtained by the user as a result
of using this product.
Trademarks
F&eIT is a registered trademark or trademark of CONTEC CO., LTD. Other company
and product names that are referred to in this manual are generally trademarks or
registered trade trademark.

CNT24-2(FIT)GY iii
Table of Contents
Copyright ..........................................................................ii
Trademarks.......................................................................ii
Table of Contents.............................................................iii
Introduction ........................................................................1
Features ........................................................................ 1
Functions and control method by controller connected2
Limited One-Year Warranty ........................................ 4
How to Obtain Service ................................................. 4
Liability......................................................................... 4
Handling Precautions .................................................. 5
About the Manual......................................................... 6
Module Nomenclature and Settings ...................................7
Nomenclature of Module Components ............................ 7
Setting a Device ID........................................................... 8
Setup Method................................................................ 8
LED Indicator ................................................................... 8
Connecting to an External Device ......................................9
Interface Connector .......................................................... 9
How to Connect an Interface Connector ..................... 9
Signal Layout on the Interface Connector................ 10
Connecting an External Signal...................................... 11
Connecting to a Opto-Isolated Input Circuit ............ 11
Output Circuit and an Example Connection ............ 12
Connecting to a Rotary Encoder................................ 12
Surge Voltage Countermeasures ................................... 13
Using the I/O Address Map...............................................15
Starting I/O Address....................................................... 15
List of I/O Address Maps................................................ 16
Specifications Common to F&eIT Products .................. 18
Bit Assignments for I/O Ports........................................ 20
Flow of Count Values...................................................... 21
Operation Commands..................................................... 22
Description of Input Commands.................................... 23

iv CNT24-2(FIT)GY
Reading a Count (command CH0: 00h, CH1: 05h)... 23
Status Data (command CH0: 01h, CH1: 06h) .......... 24
Interrupt Mask (command 15h) ................................ 25
Sense Port (command 16h) ........................................ 25
Description of Output Commands................................. 26
Initial Count Value (command CH0: 00h, CH1: 05h)26
Operating Mode (command CH0: 01h, CH1: 06h).... 26
Counter Operating Modes ......................................... 27
Z Phase /CLR Input (command CH0: 02h, CH1: 07h)31
Compare Register (command CH0: 03h, CH1: 08h). 32
Digital Filter (command CH0: 04h, CH1: 09h)......... 33
Count Value Latching (command 14h) ..................... 34
Interrupt Mask (command 15h) ................................ 35
Sense Reset (command 16h) ...................................... 35
Programmable Timer (command timer data: 17h,
timer start: 18h) 36
One-Shot Pulse (command 19h) ................................ 38
Initialization ................................................................... 39
Examples ........................................................................ 40
2-Phase Pulse Count (no interrupts) ........................ 40
2-Phase Pulse Count (with interrupts)..................... 43
Using the Memory Address Map ...................................... 47
Module Settings Area..................................................... 48
Module Information Area............................................... 60
Basic Input Data Area.................................................... 63
Basic Output Data Area................................................. 65
Examples ........................................................................ 66
System Reference ............................................................. 71
Block Diagram ................................................................ 71
Specifications.................................................................. 72
External Dimensions...................................................... 74

Introduction
CNT24-2(FIT)GY 1
Introduction
Congratulations on your recent purchase of an Insulator Counter Module.
The CNT24-2(FIT)GY can be constructed by connecting the stack controller to our
controller, you can connect to CNT24-2(USB)GY and add input channels. The
controllers that you can connect to are shown below.
- Box computer [BX-320 Series etc]
- I/O controller unit [CPU-CAxx Series]
As such, the CNT24-2(FIT)GY can be used for position alignment control in
combination with an encoder. The insulation between external signals and the
Controller Module permits the use of the Controller Module without compromising the
communications features of the latter.
Please read this manual carefully to create application programs and configure the
system, such as setting the switches and connecting it to external devices.
Features
-The CNT24-2(FIT)GY can perform 24-bit up and down counting covering two
channels.
-The CNT24-2(FIT)GY can count two-phase signals, such as rotary encoders and
linear gauges.
-The CNT24-2(FIT)GY is equipped with general-purpose input signals, with one point
per channel.
-A rotary switch allows you to set device IDs to help you keep track of device
numbers.
-The system incorporates a screw less connector plug that allows you to easily attach
and detach wires without using any special tools.
-Similar to other F&eIT series products, the system, in the module itself, incorporates
a 35mm DIN rail mounting mechanism as a standard item. A connection to a
controller module can be effected on a lateral, stack basis in a unique configuration,
which permits a simple, smart system configuration without the need for a
backplane board.

Introduction
2 CNT24-2(FIT)GY
Functions and control method by controller connected
The CNT24-2(FIT)GY can be connected to a variety of controllers.
Box Computer : BX-320 Series
I/O Controller Module : CPU-CAxx Series
Isolated Counter Module for USB : CNT24-2(USB)GY
I/O Controller Module with USB : CPU-CA10(USB)GY
The functions and control of the CNT24-2(FIT)GY vary with the controller to which
the CNT24-2(FIT)GY is connected.
Functions available with each controller connected
BX-320 Series
CPU-CA Series
CNT24-2(USB)GY
CPU-CA10(USB)GY
οο ο ο
ο ο ο ο
ο ο ο ο
ο ο ο ο
Digital filter
ο ο ο ο
Interrupt function
ο
Programmable timer
ο
Count match pulse output
ο ο ο
General-purpose digital input
ο ο ο ο
Device ID setting range 0 - 7 0 - 7 1 - 3 0 - 7
2-phase input; asynchronous clear; multiplication by 1/2/4
2-phase input synchronous clear, multiplication by 1/2/4
Single-phase input, asynchronous clear, multiplication by 1
Single-phase input with gate control, multiplication by 1/2

Introduction
CNT24-2(FIT)GY 3
Control method by controller connected
* The API-SBP(W32) is included in the development kit
DTK-SBxx(FIT)GY; the other drivers are bundled with each controller.
Control using the I/O address map
When connected to the box computer [BX-320 Series etc], the CNT24-2(FIT)GY can
receive I/O instructions directly from the controller module. For details, see Chapter 4
“Using the I/O Address Map”.
Control using the memory address map
When connected to the I/O controller unit [CPU-CAxx Series], the CNT24-2(FIT)GY
can be accessed from the host computer over the network.
The CNT24-2(FIT)GY is assigned with its device ID in the memory managed by the
controller module. The application running on the host computer controls the module
by reading/writing the memory managed by the controller module. For details, see
Chapter 5 “Using the Memory Address Map”.
Control via the Windows driver
For the functions and settings available when using the Windows driver, refer to the
reference manual and online help for each module.
Control over the web
You can monitor collected data and manage the log over the web. You can use your
familiar browser to easily make various settings. For details, refer to the reference
manual for the SVR-MMF2(FIT), SVR-MMF(FIT)GY.
BX-320 Series
CPU-CA Series
CNT24-2(USB)GY
CPU-CA10(USB)GY
Control using the I/O address map
ο
Control using the memory address map
ο
FIT Protocol
ο
API-CAP(W32)
ο
API-SBP(W32)
ο
API-USBP(WDM)
οο
Control over the web
Control via the Windows driver *

Introduction
4 CNT24-2(FIT)GY
Limited One-Year Warranty
CONTEC F&eIT series products are warranted by CONTEC CO., LTD. to be free
from defects in material and workmanship for up to one year from the date of purchase
by the original purchaser.
Repair will be free of charge only when this product is returned freight prepaid with a
copy of the original invoice and a Return Merchandise Authorization to the distributor
or the CONTEC group office, from which it was purchased.
This warranty is not applicable for scratches or normal wear, but only for the
electronic circuitry and original products. The warranty is not applicable if the device
has been tampered with or damaged through abuse, mistreatment, neglect, or
unreasonable use, or if the original invoice is not included, in which case repairs will
be considered beyond the warranty policy.
How to Obtain Service
For replacement or repair, return the device freight prepaid, with a copy of the original
invoice. Please obtain a Return Merchandise Authorization Number (RMA) from the
CONTEC group office where you purchased before returning any product.
* No product will be accepted by CONTEC group without the RMA number.
Liability
The obligation of the warrantor is solely to repair or replace the product. In no event will the
warrantor be liable for any incidental or consequential damages due to such defect or
consequences that arise from inexperienced usage, misuse, or malfunction of this device.

Introduction
CNT24-2(FIT)GY 5
Handling Precautions
Take the following precautions when handling this module.
-Do not modify the module. CONTEC will bear no responsibility for any problems,
etc., resulting from modifying this module.
-Do not use or store the equipment in a hot or cold place, or in a place that is subject to
severe temperature changes. (Operating temperature range: 0 - 50°C)
-Do not use or store the equipment in a place subject to direct sunlight or near a
heating device, such as a stove.
-Do not use or store the equipment in a dusty or humid place. (Operating humidity
range: 10 - 90%RH, No condensation)
-As this product contains precision electronic components, do not use or store in
environments subject to shock or vibration.
-Do not use or store the product near equipment generating a strong magnetic field or
radio waves.
-If you notice any strange odor or overheating, please unplug the power cord
immediately.
-In the event of an abnormal condition or malfunction, please consult the dealer from
whom the equipment was purchased.
-To avoid electric shock, please do not touch the system with a wet hand.
-Do not open the module casing. CONTEC will disclaim any responsibility for
equipment whose casing has been opened.
-To prevent damage, please do not subject the module to impact or bend it.
-To prevent contact malfunction, please do not touch the metallic pins on the external
module connector.
-The module contains switches that need to be properly set. Before using the module,
please check its switch settings.
-To avoid malfunction, please do not change the module switch settings in an
unauthorized manner.
-Do not operate the device module when the power for the Controller Module is on.
To avoid malfunction, please be sure to turn off the power for the Controller
Module.
-Regarding “CE EMC Directive Notice”.
Please see the “Hardware specification” to meet the mentioned standard above.

Introduction
6 CNT24-2(FIT)GY
FCC PART 15Class A Notice
About the Manual
This manual consists of the following chapters:
Chapter 1 Introduction
Chapter 2 Module Nomenclature and Settings
Explains the nomenclature of the components of the Module and their
switch settings.
Chapter 3 Connecting to an External Device
Explains interface connectors and external I/O circuits.
Chapter 4 Using the I/O Address Map
Explains I/O port bit assignments and the definitions of the bits when
the Module is used as a CPU-SBxx(FIT)GY module.
Chapter 5 Using the Memory Address Map
Explains the module settings area, the information area, and the I/O
data area when the Module is used as a CPU-CAxx(FIT)GY module.
Chapter 6 System Reference
Explains module specifications and circuit block diagrams.
This equipment has been tested and found to comply with the limits for a ClassA digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
NOTE
FCC WARNING
Changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment.

Module Nomenclature and Settings
CNT24-2(FIT)GY 7
Module Nomenclature and Settings
Nomenclature of Module Components
Figure 2.1. shows the names of module components. In the figure, the indicated
switch settings represent factory settings.
Figure 2.1. Names of Module Components
LED Indicator
Device ID
Interface connector
CNT24-2
Device
ID
AB Z D1
CH0
PCOM
PA
PB
PZ
PD1
EQ.P
EQ
EQ.N
0
4
0
4
6
2
5
1
3
7
PCOM
PA
PB
PZ
PD1
EQ.P
EQ
EQ.N
CH0
CH1
CH1

Module Nomenclature and Settings
8 CNT24-2(FIT)GY
Setting a Device ID
The controller module distinguishes and keeps track of the modules that are connected
to it by assigning device IDs to them.
Each module, therefore, should be assigned a unique ID.
A Device ID can be assigned in a 0 - 7 range, so that a maximum of eight modules can
be distinguished.
To connect the CNT24-2(FIT)GY to the CNT24-2(USB)GY, assign a device ID
between 1 and 3.
The factory setting for the Device ID is [0].
Setup Method
A Device ID can be set by turning the rotary switch that is located on the module face.
A Device ID can be assigned by turning the switch.
Figure 2.2. Setting a Device ID (SW1)
LED Indicator
A: Turns on when a current flows from pin PA
(low level, negative logic). (green)
B: Turns on when a current flows from pin PB
(low level, negative logic. (green)
Z: Depends on the logic setting on the Z phase.
Z phase set to positive logic: turns on when pin PZ is open (high level, positive
logic). (green)
Z phase set to negative logic: turns on when a current flows from pin PZ. (low
level, negative logic).(green)
DI: turns on when a current flows from pin PD.
(low level, negative logic).(green)
Device
ID
0
4
0
4
6
2
5
1
3
7
Default:
(Device ID = 0)

Connecting to an External Device
CNT24-2(FIT)GY 9
Connecting to an External Device
Interface Connector
How to Connect an Interface Connector
When connecting the Module to an external device, you can use the supplied
connector plug. When wiring the Module, strip off approximately 7 - 8 mm of the
covering for the cable, and insert the bare wire by pressing the orange button on the
connector plug. Releasing the orange button after the wire is inserted to fix the cable.
Compatible wires are AWG 28 - 20.
Figure 3.1. Connecting an Interface Connector and Connectors That Can
Be Used
Note! Removing the connector plug by grasping the cable can break the wire.
Press this section to insert
the wire material.
7 - 8mm
CNT24-2
Device
ID
A B Z D1
C H
PCOM
PA
PB
PZ
PD1
EQ.P
EQ
EQ.N
0
4
0
4
6
2
5
1
3
7
PCOM
PA
PB
PZ
PD1
EQ.P
EQ
EQ.N
CH
CH
C H
- Connector used:
2.5mm pitch, 9-pin type, 4.0A nominal current
MC0,5/9-G-2,5 connector (made by Phoenix Contact Corp.)
- A pplicable plug:
Front-operable spring gauge type
FK-MC0,5/9-ST-2,5 plug (made by Phoenix Contact Crop.)
Applicable wire: AWG 28 - 20

Connecting to an External Device
10 CNT24-2(FIT)GY
Signal Layout on the Interface Connector
The Module can be connected to an external device using a 9-pin
(1 group) connector that is provided on the Module face.
Figure 3.2. Signal Layout on the Interface Connector
9
8
7
6
5
4
3
2
1
CH0
PCOM(0)
PA(0)
PB(0)
PZ(0)
PDI(0)
EQ.P(0)
EQ(
0)
EQ.N(0)
N.C.
Pluscommonforchannel0 input signals
Channel 0 phaseA input
Channel 0phaseBinput
Channel 0phaseZinput
Channel0 general-purpose digital input
Plus commonfor channel 0 output signals
Channel 0 count-matchoutput
Minuscommonforchannel0 output signals
Not connec
ted
9
8
7
6
5
4
3
2
1
CH1
PCOM(1)
PA(1)
PB(1)
PZ(1)
PDI(1)
EQ.P(1)
EQ(1)
EQ.N(1)
N.C.
Plus common for channel 1 input signals
Channel 1 phase A input
Channel 1 phase B input
Channel 1 phase Z input
Channel 1 general-purpose digital input
Plus common for channel 1 output signals
Channel 1 count-match output
Minus common for channel 1 output signals
Not connected

Connecting to an External Device
CNT24-2(FIT)GY 11
Connecting an External Signal
Connecting to a Opto-Isolated Input Circuit
Figure 3.3. Isolated input Circuit and an Example of a Connection
Notes! -The general-purpose input signal also has a similar circuit configuration.
-When an external power supply other than 5V is used, insert a current-limiting
resistor at position R. If PV denotes an external power supply, the current-limiting
resistor R can be calculated as follows:
For example, P = 12V will require the following resistance:
350
Ω < R < 470 Ω .
220Ω
Opto-coupler
Module External circuit
Input
pin
+5V
Plus common
External device
signal output
220Ω
Opto-coupler
Input
pin
+12V
External device
signal output
400Ω
R
Plus common
P - 5
20 < RkΩ<P - 5 15

Connecting to an External Device
12 CNT24-2(FIT)GY
Output Circuit and an Example Connection
When there is a match between a channel count and a specified value, a one-shot (one
pulse) match signal is output to the outside. The signal output section has an open
collector configuration based on opto-isolation. Driving the output of this module
requires an external power supply.
Figure 3.4. Connecting to an Output Circuit
Note! A surge voltage protection circuit is not provided on the output transistors for this
Module. Therefore, when driving relays, lamps, and other induction loads using this
Module, a surge voltage countermeasure should be provided on the load side.
For a description of how to deal with surge voltages, see "Surge Voltage
Countermeasures".
Connecting to a Rotary Encoder
Figure 3.5. Connecting to a Rotary Encoder
Output
pin
Opto-coupler
Plus
common
Minus
common
Load External
power
supply
5V - 12VDC
Vcc Module External circuit
CNT24-2
Device
ID
A B Z D1
CH0
PCOM
PA
PB
PZ
PD1
EQ.P
EQ
EQ.N
6
PCOM
PA
PB
PZ
PD1
EQ.P
EQ
EQ.N
CH0
CH1
CH1
* A 400Ωresistor is required at position R when used at 12V, but not at 5V.
Power supply
0V
Shield
Encoder
Phase A
Phase B
Phase Z
Plus common
R
R
R
Pin PA
Pin PB
Pin PZ

Connecting to an External Device
CNT24-2(FIT)GY 13
Surge Voltage Countermeasures
When connecting a load that generates surge voltages and inrush currents, such as an
induction load (relay coil) or an incandescent light bulb, to the one-shot pulse output,
appropriate protection must be provided in order to prevent damage to the output stage
or a malfunction due to noise. The rapid shutoff of a coil, such as a relay, generates a
sudden high-voltage pulse. If this voltage exceeds the voltage tolerance level of the
output transistor, it can cause the transistor to gradually deteriorate, or even completely
damage the transistor. Therefore, when driving an induction load, such as a relay coil,
you should always connect a surge-absorbing device. The following illustrates a surge
voltage countermeasure that can be employed:
Figure 3.6. Surge Voltage Countermeasure
Note! In order for a protection circuit to operate effectively, it must be connected within 50
cm of a load and a contact point.
Using a relay coil
Diode Relay coil
Using a lamp
Inrush current
prevention resistance Dark point-lighting
bypass resistance
Zener diode
Relay coil
External supply voltage < Zener diode voltage

Connecting to an External Device
14 CNT24-2(FIT)GY

Using the I/O Address Map
CNT24-2(FIT)GY 15
Using the I/O Address Map
Starting I/O Address
When connected to the Box computer [BX-320 Series etc], the CNT24-2(FIT)GY can
directly receive I/O commands from the controller module. Depending on how the
Device ID is set, the I/O addresses indicated below will be used exclusively by the
CNT24-2(FIT)GY.
Because the address bus on which the I/O address space is specified is not fully
decoded in continued 16 bits, four starting I/O addresses exist in each Device ID.
If the Device ID is set to 0h, one of the four addresses (0800h, 0840h, 0880h, or
08C0h) will be used as a starting I/O address.
Table 4.1. List of Starting I/O Addresses
For detailed specifications on the I/O space that is controlled by the controller module,
see the controller module manual.
ID No.
00800h - 081Fh(recommend) 0840h - 085Fh 0880h - 089Fh 08C0h - 08DFh
11800h - 181Fh(recommend) 1840h - 185Fh 1880h - 189Fh 18C0h - 18DFh
22800h - 281Fh(recommend) 2840h - 285Fh 2880h - 289Fh 28C0h - 28DFh
33800h - 381Fh(recommend) 3840h - 385Fh 3880h - 389Fh 38C0h - 38DFh
44800h - 481Fh(recommend) 4840h - 485Fh 4880h - 489Fh 48C0h - 48DFh
55800h - 581Fh(recommend) 5840h - 585Fh 5880h - 589Fh 58C0h - 58DFh
66800h - 681Fh(recommend) 6840h - 685Fh 6880h - 689Fh 68C0h - 68DFh
77800h - 781Fh(recommend ) 7840h - 785Fh 7880h - 789Fh 78C0h - 78DFh
Occupied I/O address