DAQ system USB-LT02 User manual

USB-LT02 Users Manual (Rev 1.0)
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USB-LT02
User’s Manual
Windows, Windows2000, Windows NT and Windows XP are trademarks of Microsoft. We acknowledge that the trademarks or
service names of all other organizations mentioned in this document as their own property.
Information furnished by DAQ system is believed to be accurate and reliable. However, no responsibility is assumed by DAQ
system for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or copyrights of DAQ system.
The information in this document is subject to change without notice and no part of this document may be copied or
reproduced without the prior written consent.
Copyrights 2005 DAQ system, All rights reserved.

USB-LT02 Users Manual (Rev 1.0)
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-- Contents --
1. Introduction
2. USB-LT02 Function
3. Installation
3.1 Confirm Product Contents
3.2 Installation Process
4. USB-LT02 Board
4.1 USB-LT02 Description
4.2 Memory Map
4.3 Connector Pin-out
4.4 Sample Program
5. Test
5.1 Input Test
5.2 Output Test
Appendix
A.1 Dimension
A.2 Schematic
A.3 Application Circuit(Isolation I/O)
A.4 USB-LT02(B)
Reference

USB-LT02 Users Manual (Rev 1.0)
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1. Introduction
USB-LT02 can control external device through simple provided API using even the
developer who can never know USB.
Connection with the outside uses a screw terminal and it can easily connect. There is special
all-around board which it is prepared a TEST POINT. A simple circuit installs it to own board.
You don’t need to use separately power supply for simple test because USB-LT02 uses PC
power.
Specially, an automation system and the input/output circuit which can operate are composed.
Just usable to the automation control module that it don’t damage to external equipment and
own module.
Figure 1-1 shows that simple test to control 220V lamp with USB-LT02.
[Figure 1-1. USB-LT02 Action]
(Notice) 1. It can control the maximum AC/DC 350V in case of port 54 ~ 57, can use continuously
the minimum 130mA under. (Refer to Figure 3-1.)
2. It can control the maximum AC/DC 60V in case of port 50 ~ 53 and port 40 ~ 47, can use
continuously the minimum 550mA under. (Refer to Figure 3-1.)

USB-LT02 Users Manual (Rev 1.0)
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2. USB-LT02 Function
The USB-LT02 has simple structure for easy I/O connection as like Figure 1-1. To
connection USB and I/O take charge of the 8Bit Micro Controller, the command set equally use
the 8051 command set. Each I/O port can set up whether or not there is what a user uses by
input or output.
I/O Port1
USB-LT02
USB Low Speed
Device 2.0
Specification
SIE
USB
Interface
Input/
Output
I/O Port4
I/O Port5
I/O Port6
I/O Port7
16Byte
USB FIFO
Two 16Bit
Timer/Counter
ROM(OTP)
16KByte
RAM
256Byte
8Bit CPU
8051 Compatible
Program Instruction
Isolated Photo
coupler Input
Isolated Solid State
Relay Output
Isolated Solid State
Relay Output
Isolated Photo
coupler Input
Isolated Photo
coupler Input
[Figure 2-1. USB-LT02 Functional Block Diagram]
Internal program memory is taken possession of programmed firmware, program memory is
OTP (One Time Programmable) type.
GENERAL DESCRIPTION
Low Speed device 1.5Mbps
USB HID Interface
8051 Compatible Instruction set
4 clocks per Instruction cycle
16K EPROM, 256Bytes RAM
USB Bus Powered

USB-LT02 Users Manual (Rev 1.0)
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APPLICATION
Factory Automation, Home Automation
USB Data acquisition(Temperature/Humidity/voltage/current
USB I/O Control, Remote Control
Factory Control Module
Light Illumination Control
SPECIFICATION
▣Interface
▪USB Powered through USB-B connector MAX 500mA
▪+5V Single Power Operation
▪16 Isolated Photo-coupler Input
▪16 Isolated Solid state Relay Output
▣Functions(Micro-Controller)
▪Two 16bit Timer/Counter
▪User configuration I/O
Schmitt trigger input
Schmitt trigger input with pull –up
N-Ch open drain output
N-Ch open drain output with pull-up
▪One Control endpoint
▪Two Data endpoint
▪30 external interrupt source
▣External connection
▪4pin USB B-type connector
▪28pin DIP form-factor Pin-out
▪6 Test Point
▪40 screw terminal
SOFTWARE
▣Operating System
▪Windows 2000/XP
▣Application Programming Interface
▪Windows Client DLL API
▣Software Development
▪Windows Application by User
▪Custom USB Device Firmware
▪Custom Windows Client DLL

USB-LT02 Users Manual (Rev 1.0)
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3. Installation
You confirm whether or not the packing contents are in good order before installation.
3.1 Confirm Product Contents
[Figure 3-1. USB-LT02 Product Contents]
Product Contents
1. USB-LT02 Board
2. USB(A-B) Cable
3. CD (Manual/Source etc.)

USB-LT02 Users Manual (Rev 1.0)
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3.2 Installation Process
For USB-LT02 board installation to PC is as follows. There isn’t a Jumper to especially
to set up for board installation in case of USB boards as it is Plug & Play devices.
Also, there is no need to install of device driver because of HID (Human Interface Device)
connection in case of USB-LT02.
(1) First, open the box and connect to PC through USB cable.
(2) The opposite side of USB cable connects to USB-LT02 board.
(3) If cable connection succeeds, LED light on for indication of board supply.
(4) It confirms a driver normally installation in the following ways.
Do the following steps to show up the “Device Manager”window.
[My Computer -> Properties -> Hardware -> Device Manager -> Human Interface
Devices -> “HID-compliant device”
[Figure 3-1. “System Properties” window]

USB-LT02 Users Manual (Rev 1.0)
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[Figure 3-2. “System Properties” window]

USB-LT02 Users Manual (Rev 1.0)
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[Figure 3-3. Device Manager Window]

USB-LT02 Users Manual (Rev 1.0)
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4. USB-LT02 Board
In this chapter, the primary functions of the board are described briefly. For more
information, refer to the device specification.
4.1 USB-LT02 Description
SW1
USB B type
Connector
USB-LT02 Board
28
1 2 3 4 95 6 87 10 11 12 13 14
27 26 25 2024 23 2122 19 18 17 16 15
P57 P56 P55 P54 P5C2 P53 P52 P51 P50 P5C1 P47 P46 P45 P44 P4C2 P43 P42 P41 P40 P4C1
P70 P71 P12 P13 P1C1 P14 P15 P16 P17 P1C2 P60 P61 P62 P63 P6C1 P64 P65 P66 P67 P6C2
DAQ systemUSB-LT02 www.daqsystem.com LED1
LED2
Micom
6.00
[Figure 4-1. USB-LT02 Out-side View]
In case of USB-LT02 as above picture, can easily use I/O, simple circuit is composed it
to own all-around USB-LT02 board. Each component explanation is as follows.
(1) USB B type Connector
The USB-LT02 board connects to the PC through the USB A-B cable. The power
supply and data gives and takes through this cable.