Contec CNT24-2GY User manual

PC-HELPER
Isolated 24-bit Up/Down Counter Module
for USB
CNT24-2(USB)GY
User’s Guide
CONTEC CO.,LTD.

CNT24-2(USB)GY i
Copyright
Copyright 2013 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
All company and product names that are referred to in this manual are generally
trademarks or registered trade.

ii CNT24-2(USB)GY
Product Configuration
-Module (one of the following products)
[CNT24-2(USB)GY]…1
-First step guide…1
-Disk *1 [API-USBP(WDM)]…1
-Interface connector (plugs) FK-MC0,5/9-ST-2.5…2
-AC adapter (1.5m)…1
-AC cable (1.5m)…1
-USB cable (1.8m)…1
-Rubber feet…4
-Magnet…2
-Warranty Certificate …1
-Serial Number Label …1
*1 The bundled disk contains the driver software and User’s Guide (this guide)
Check the contents to make sure that you have everything listed below. If you do
not have all the items or have any damage, contact your distributor or CONTEC
group office where you purchased.
1
2
3
5
7
9
B
F
8
1
2
3
5
7
9
B
F
8
System unit
Disk
[API-USBP(WDM)]
USB cable
Interface connector plugs
Protective Rubber
First step guide
AC adapter
AC cable
Magnet Warranty
Certificate
Serial Number
Label

CNT24-2(USB)GY iii
Table of Contents
Copyright ...........................................................................i
Trademarks........................................................................ i
Product Configuration......................................................ii
Table of Contents.............................................................iii
Copyright ...........................................................................i
Trademarks........................................................................ i
Product Configuration......................................................ii
Table of Contents.............................................................iii
1. Introduction .................................................................... 1
Summary........................................................................... 1
Features ........................................................................ 2
Support Software.......................................................... 5
Accessories (Option) ..................................................... 5
Customer Support ............................................................ 6
Web Site ........................................................................ 6
Limited One-Year Warranty ............................................ 6
How to Obtain Service...................................................... 7
Liability............................................................................. 7
Safety Precautions............................................................ 7
Safety Information ....................................................... 7
Handling Precautions .................................................. 8
Environment................................................................. 9
Inspection.................................................................... 10
Storage ........................................................................ 10
Disposal....................................................................... 10
2. Module Nomenclature....................................................11
Module Nomenclature .................................................... 11
3. Setup ............................................................................. 13
Connection-Overall Diagram ......................................... 13
Setting a Module ID ....................................................... 13
Setup Flow ...................................................................... 14
Software Installation...................................................... 14
Illustration of Menu Screen....................................... 14
Installation of API-USBP(WDM) Development

iv CNT24-2(USB)GY
Environment............................................................... 15
Installing the Utility.................................................. 16
Connecting to a PC......................................................... 16
Setting Properties Using Device Manager.................... 18
Connecting to an External Device................................. 19
Signal Layout ............................................................. 19
Connection Method .................................................... 20
Counting Function ......................................................... 22
Counter Operating Modes ......................................... 22
Clearing Count Value................................................. 26
Digital Filter............................................................... 28
Count-match Output.................................................. 29
Connecting an External Power Supply Such as the AC
Adapter in Self-powered Mode ...................................... 30
Installing the Module..................................................... 33
Installation Orientation............................................. 33
Mounting with magnets............................................. 34
Mounting on a DIN Rail ............................................ 35
Using Several Products of the same Model .................. 38
Setting a Module ID................................................... 38
4. Application Development ..............................................39
Reference to Online Help............................................... 39
Printing Function Reference.......................................... 39
Sample Program............................................................. 40
Distributing Developed Application .............................. 40
Utility.......................................................................... 40
5. Troubleshooting.............................................................41
Troubleshooting .............................................................. 41
Q & A............................................................................... 42
Diagnostic Program........................................................ 44
Version Upgrade ............................................................. 45
How to Upgrade the Firmware.................................. 45
Returning to Initial State .............................................. 47
6. Connecting with Expansion Accessories .......................49
Setting a Device ID ........................................................ 50
Connection between Modules ........................................ 51

CNT24-2(USB)GY v
Stack Connection Locking Devices............................ 51
How the Stack Connection Locking Device Works... 52
Connecting the Module .............................................. 53
Removing the Module................................................. 54
7. Product Specification .................................................... 55
Hardware Specification .................................................. 55
Software Specification.................................................... 58
Circuit Block Diagram.................................................... 59
Physical Dimensions ...................................................... 60
External Input and Output Circuit ........................... 61
Protection Circuit Introduction ..................................... 63
Surge Voltage Countermeasures ............................... 63
8. Appendix ....................................................................... 65
Glossary........................................................................... 65

vi CNT24-2(USB)GY

1. Introduction
CNT24-2(USB)GY 1
1. Introduction
Summary
Before, the measurement and control was realized by way of inserting PCI interface
boards into expansion slots of a desktop computer in case of configuring system using
computers. However, because of the limit on number of expansion slots, it is difficult
to configure system sometimes, or it is difficult to perform the same measure and
control as PCI interface boards for a note PC. The USB module can be used to resolve
that kind of problems.
CNT24-2(USB)GY is compact isolated up-down counter module which is applied to
USB and can be used easily.
It not only counts high-speed pulses but also can be used for position alignment
control in combination with an encoder. In addition, external electric do not have
direct effect on the host computer because of the isolation between control external
signals and the CPU of the controller module by Optocoupler.
Now serviceable with USB-compatible PCs, this module is best suited for use with
notebook PCs with no PCI bus expansion slot.
When using it on a desktop computer, you can perform simple connection without the
need for opening the host cover.
Corresponding to USB
Desktop Computer
Note PC
Easy to setup
Simple on utilization

1. Introduction
2 CNT24-2(USB)GY
Being connected with USB port, the module can be setup simply. In addition, it can
be used immediately owing to the supplied Windows development environment and
Utility.
The communication in Full Speed (12Mbps) is added to this USB module, and which
is compatible with High Speed (480Mbps). High Speed is namely High-Speed data
communication which is additional definition in the specification of USB2.0. The
host controller performs communication in 480Mbps when corresponding to High
Speed of USB2.0. Comparing with communication in Full Speed, the response for
module access as communication in High Speed improves.
Features
Support various kinks of counter modes
The count method supports single-
phase input, 2-phase input and single-
phase input with gate control.
Because it can be connected with a
rotary encoder, using it can easily
perform the position detection and
revolution speed measurement.
- Single-phase input
It can be used to keep track of the number of good products and inferior products on a product
examination line.
- 2-phase input
It can be used to measure moving distance and to detect position. Detailed control can be
effected by setting the count input multiplier to 2 or 4.
- Single-phase input with gate control
Because the pulse count time can be controlled via external signal, it is very convenient to use the
module to measure the revolution speed.
Digital filter
The digital filter which is designed to cut the chattering of input pulse signal has been installed.
The allowable range of the sampling cycle is 0.1 - 1056.1µsec.

1. Introduction
CNT24-2(USB)GY 3
Count-match output
Once the count comparison value has been set, the module will output a signal to external when there
is a match between a count value and a count comparison value. The allowable setting range of the
output signal width is 0 - 104.5ms.
Isolated from external device
Because the isolation between the CPU and the external device is made by Optocoupler, the change
of external circuit will not affect the computer by USB port.
(There is not external electric effect on the host computer by way of USB ports because of the
isolation between the CPU of the module and external device by Optocoupler.)
Easy to wire
The system incorporates a screwless connector
plug that allows you to easily attach and detach
wires without using any special tools.
Easy-to-install design
The system, in the module itself, incorporates a
35mm DIN rail mounting mechanism as a standard
item, so it can be attached and detached easily.