LINK

Features of the basic link (Link45, and Link12):

The "Link" provides an ASCII interface to Dallas 1-Wire® networks. Links come in several variations but all are microcontroller-based replacements for the Dallas DS9097U-09 and provide increased reliability and performance particularly on large or complicated 1-Wire® networks. The Link uses an advanced bus interface and intelligent algorithms to make 1-Wire® communications more reliable at short and long distances. (The algorithms and interface for this device were originally developed at Dallas Semiconductor.) The LINK works with Dallas TMEX® and iButton® Viewer software.

The LINK has an advanced 1-Wire® front-end that presents controlled impedance to the bus, performs intelligent bus pre-charge, and has improved waveform timing based on extensive research with a variety of iButton® and 1-Wire® chip devices and network topologies. Slew controlled drivers reduce EMI and ringing, and analog and digital filtering reduce noise sensitivity. A crystal controlled time base eliminates the need for periodic recalibration steps in the driving software and assures consistent 1-Wire® waveform timing.

The LINK also has features not found in a Dallas DS9097U. Used with any terminal program, the LINK can serve as a network sniffer and diagnostic tool. See Dallas Application Note #244.

Link12 & Link45 - The original LINK the Link12 with an RJ12 socket for the 1-Wire connection is still available for our customers who are standardized on that connector already. The LINK45 with an RJ45 socket (also accepts RJ12 Plugs) is also available for those customers who would like to take advantage of common and electrically more robust CAT-5E cabling. Link12s and Link45s are also available with their' own 1-Wire® address (Link12I and Link45I.)

Links 12, 12I, 45 & 45I from version 1.1a and later and all LinkTH, Link OEM Module and LinkHub products are firmware upgradeable as new software versions and features become available for a $10 fee (each, including return postage.)

1-Wire®, iButton® and TMEX® are all trademarks of Dallas Semiconductor Corp.

 

 

 

 

 

 

LinkTH

       and

THMon Software

 

The LinkTH is a more intelligent 1-Wire® adaptor that is designed around getting data out rather than just manipulating the 1-Wire® network. Previous 1-Wire® interfaces such as the Dallas DS9097U required an intimate knowledge of the 1-Wire® protocol and the sensors you want to address to get any useful data. With the LinkTH you just ask for it to report, or if you wish, set it to report at the interval of your choice.

The LinkTH uses the same hardware as the Link12 and Link45 and the same low level software for dealing with large and/or complex 1-Wire® networks. The difference is in the simpler command set that makes direct use of the LinkTH practical and speeds application development for those who wish to write their own software.

iButtonLink also offers the THMon software package to LinkTH users for free. THMon will:

  1. Update the LinkTH firmware to the version appropriate to that version of THMon.

  2. Automatically detects any sensors connected to the 1-Wire® plug (RJ45)

  3. Lets you give a name each of any number of sensors.

  4. Lets you select how often sensors are checked.

  5. It can send E-Mail alarms for low or high temperature conditions with individual set points for each sensor. 

  6. Let you look at the log or graph of any of your sensors.

1-Wire®, iButton® and TMEX® are all trademarks of Dallas Semiconductor Corp.

 

 

 

 

 

 

 

 

LinkOEM

Module

The LinkOEM module will allow you to integrate the functionality of the iButtonLink Link12 or Link45 into your product as a 24 pin, 0.600"spacing Dual Inline Pin (DIP) plug in card.

The LinkOEM Module is an advanced, intelligent serial interface for use with Dallas Semiconductor 1-Wire™ and iButton™ components. It uses superior digital and analog methods to accomplish more reliable operation on a wide variety of network topologies. It also offers many functions that simplify network communications, and some diagnostic tools as well.

The LINK has been designed to operate reliably on long and short 1-Wire busses. This is accomplished by a special analog interface design that uses matched impedances and slew rate controls, as well as smart cable pre-charge. In addition, the firmware (programming) is adaptive and makes adjustments for a variety of network parameters automatically.

The LINK was designed in cooperation with Dallas Semiconductor Corp., Dallas, Texas, who is the manufacturer of the 1-Wire and iButton devices and various accessories.

Links 12, 12I, 45 & 45I from version 1.1a and later and all LinkTH, Link OEM Module and LinkHub products are firmware upgradeable as new software versions and features become available for a $10 fee (each, including return postage.)

 

 

LinkHub

Products

The LinkHub is the solution for very large or complex 1-Wire® networks.

LinkHubs™ are advanced, intelligent, multiport serial port (LinkHubS32K) or ethernet (linkHubE32K) interfaces for use with Dallas Semiconductor 1-Wire™ and iButton™ components. It uses superior digital and analog methods to accomplish more reliable operation on a wide variety of network topologies. It also offers many functions that simplify network communications and some diagnostic tools as well.

There are five (5) 1-wire busses (1 internal and 4 external) which are logically or’ed into a single composite 1-wire bus. Software written for the Dallas Semiconductor DS9097U interface will work even though the 1-wire devices are physically on separate busses. Each external bus can be up to 1000 feet long. This yields a logical 1-wire network of 4000 feet with 4 times the network weight of a standard 1-wire bus.

An extended command set allows the four 1-Wire® ports can be used independently or together. In addition, if one of the 1-Wire® shorts out the remaining channels continue to function normally. When the problem is corrected the channel will reappear and operate normally.

The LinkHub is a powered device, providing +12V and +5V power on the same cable as the 1-wire bus. In addition, local EEPROM storage is provided for user configuration data. The LinkHub is available as three models, differentiated by the amount of EEPROM memory, 32KB, 256KB, and 512KB.

The LinkHub has been designed to operate reliably on long and short 1-Wire busses. This is accomplished by a special analog interface design that uses matched impedances and slew rate controls, as well as smart cable pre-charge. In addition, the firmware (programming) is adaptive and makes adjustments for a variety of network parameters automatically.

The LinkHub is based on the Link, designed in cooperation with Dallas Semiconductor Corp., Dallas, Texas, who is the manufacturer of the 1-Wire and iButton devices and various accessories.

LinkHubs ship WITHOUT power supply. For use on USA power the HubPwr power supply may be used. For use outside of the USA you will need a power supply that can supply 12VDC to a 2.5mm coaxial connector, negative to the center post.

Links 12, 12I, 45 & 45I from version 1.1a and later and all LinkTH, Link OEM Module and LinkHub products are firmware upgradeable as new software versions and features become available for a $10 fee (each, including return postage.)

 

 

 

MultiSensor

MultiSensor is a follow on to the DT1A Module but with designed in room for expansion to become a versatile family of sensors. It is presently available as a Temperature (MS-T), a Temperature and Voltage (0-5VDC, MS-TV), a Temperature and Humidity (MS-TH) or Temp & Light level (MS-TL) sensor.  .