LinkLocator manual
Contents
1. 4 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 4 iButtonLink yyyyyyyyyyyyyyyy is the serial number of the LinkLocator associated with XXXXXXXXXXXXXXXX If the 1 wire slave was NOT downstream of a LinkLocator the Locator serial number will be FFFFFFFFFFFFFFFF Extended Mode Extended Mode is used to command and search LinkLocator s Please note that 1 wire slaves from Dallas Maxim do NOT participate in Extended Mode A special command sequence is sent by the Link Master to cause ALL Dallas Maxim parts to ignore the bus so that only eXtended mode slaves will participate LinkLocator s use FxB communications during eXtended mode so there is no conflict with the Dallas Maxim parts Extended Mode is entered by issuing the X command LinkLocator responds to the following ROM commands when in Extended Mode Commands common to all eXtended Mode Slaves Search ROM 0xF0 Alarm Search ROM 0xE0 Skip ROM 0xCC Read ROM 0x33 Match ROM 0x55 Commands specific to the LinkLocator Green LED on 0x12 Red LED on 0x13 LED s off 0x14 Report Software Version 0x01 Read one additional byte after the 0x01 command The major software version will be in the high nibble the minor software version will be in the low nibble The current version of LinkLocator returns 0x10 Version 1 0 The Family code of LinkLocator is OxFE The serial number format is exactly the same as Normal Mode Exam2. 9 PM Page 12 iButtonLink Disclaimers USE OF iButton Link PRODUCTS IN MEDICAL AND AIRCRAFT OR OTHER TRANSPORTATION SYSTEMS iButton Link Products are not authorized for use in or in connection with Surgical implants or as critical components in any medical or aircraft or other transportation devices or systems where failure to perform can reasonably be expected to cause significant injury to the user without the express written approval of an Executive Office of iButton Link Such use is at Buyer s sole risk and Buyer is responsible for verification and validation of the suitability of Products incorporated in any such devices or systems Buyer agrees that iButton Link is not liable in whole or in part for any claim or damage arising from such use and shall have no obligation to warranty such Products Buyer agrees to indemnify defend and hold iButton Link harmless from and against any and all claims damages losses costs expenses and liabilities arising out of or in connection with Buyer s use of iButton Link Products in such applications to the extent Buyer has not obtained the express written approval of an Executive Officer of iButton Link COMPLIANCE WITH U S EXPORT REGULATIONS iButton Link Products including samples are subject to the export control laws and regulations of the United States and to the laws and regulations of the country in which the Products are received Products may not be sold leased or otherwise
3. O Link Master Command This is the default operating mode of LinkLocator s and is the power up mode The LinkLocator monitors the 1 wire ROM search OxF0 or ROM alarm search OxEO If the selected 1 wire device is down stream of the LinkLocator the LinkLocator becomes selected The LinkLocator then monitors for a 0x00 byte coming down the bus Receipt of this byte arms the LinkLocator The LinkLocator will respond with its serial number bytes to the next 8 byte reads that are issued by the 1 wire master Please note The 1 wire device selected with the search is NO LONGER SELECTED The 0x00 byte caused the 1 wire slave to deselect Example using Link45 ASCII commands F is the locator first command It will search the 1 wire network for the lowest 1 wire serial number and return it along with the serial number of the locator associated with it The Link45 response is of the form SXXXXXXXXXXXXXXXX YYYYYYYYYYYYYYYY Where S indicates the status of the 1 wire search The possible values of S are This is not the last 1 wire device on the network There were discrepancies during the search This is the last 1 wire slave address on the network No discrepancies noted E An error occurred during the search The search results are invalid N No slaves were present on the 1 wire network No presence XXXXXXXXXXXXXXXX S the serial number of the 1 wire slave discovered Copyright 2005 201
4. eset the 1 Wire bus Command Response r PFE 3 Send the command to read the status This is a binary mode command Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 6 iButtonLink Command Response bCCO1LFF bCCO110 The above command consists of the following parts b Enter binary mode CC Skip ROM Command this command selects all slaves on the bus 01 Command byte 01 is sent to all slaves on the bus FF This dummy byte is modified by the slaves when data is transmitted to the host In the above command the OxFF sent to the LinkLocator was modified to a 0x10 to indicate the LinkLocator version number of 0x10 How to turn an LED pin on or off on a LinkLocator Some models of LinkLocator have built in LEDs Some models may have LEDs added to them The following instructions apply to models where an LED exists These commands may also be used to toggle IO pins in the Model 4 LinkLocator The IO pins are inside the sealed box For an OEM product this could be used as a low level signal to activate relays that activate a door lock or light an indicator This example uses 0000000000000000 as the LinkLocator 1 Wire serial number Please adjust your command to use the correct LinkLocator serial number 1 Enter extended mode Command Response X X lt CR gt lt LF gt 2 Reset the 1 Wire bus Command Res
5. iButtonLink TEEN NOLOGY LinkLocator User s Manual Model 1 shown with MBL Touch probe and fobs 5 Mar 14 iButton Link LLC 1221 Innovation Drive Suite 117 Whitewater WI 53190 http www iButton Link com Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 1 iButtonLink Modification History Date Revisions 15 JUN 2005 Initial Version 5 MAR 2014 Update to include notes on Model 4 and examples of extended mode commands Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 2 iButtonLink General The LinkLocator is a breakthrough product that allows a 1 Wire integrator to quickly and reliably determine which read head was used to attach an iButton to the 1 Wire bus This location feature is one of the most sought after features in 1 Wire While 1 Wire provides a low cost reliable networked solution for electronic keys guard tour and other applications there has never been a simple way to determine which reader the iButton user is using Previous attempts to solve this deficiency have included schemes using switches to switch the iButton read head on and off the bus so that the location can be implied by the state of the switch This approach while workable for small numbers of probe heads introduces switching noise settling times and reduced noise immunity for the overall bus The LinkLocat
6. ications The Model 1 may be integrated with the users probe head It fits in the MBL Technologies Touch Reader available separately The Model 1 is shown inside a MBL Technologies WeatherTight Enclosure The Model 1 is appropriate for retrofit applications The wire designations are Orange 5V optional but recommended Blue Master bus 1 wire Yellow Located bus 1 wire Black Ground Black Ground Green To BiColor LED on MBL Touch Reader Brown To BiColor LED on MBL Touch Reader Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 9 TEEN NOLOGY Model 2 Note This model is deprecated The LinkLocator Model 2 is supplied as a packaged unit with enclosure box MBL touch reader and embedded LinkLocator The 1 wire network connections are RJ45 This is an end user package intended for proof of concept testing Indoor use only Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 10 TEEN NOLOGY Model 3 Also known as the iButton LinkReader Note This model is deprecated The Model 3 iButton LinkReader is a tight integration of the LinkLocator and the MBL touch reader The LinkLocator is implemented as a little round board attached to the pins on the back of the MBL Touch Reader This model is designed for new installations It is designed to optimize installation costs The Model 3 is suppl
7. ied with 24 inch pig tail connection wires Blue 1 Wire communications Black Ground Orange Optional Recommended 5V DC Note For outdoor use we recommend using the Model 3 with the MBL Weather Tight enclosure The hole recommended for the iButton LinkReader is a 20mm Double D Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 11 Model 4 The Model 4 provides LinkLocator technology in an easy to use MS style case with an RJ 12 jack for an external iButton read head This package provides ease of use and flexibility for iButton read applications The RJ 12 jack has the following pin out Pin Signal 1 No Connection 2 1 Wire 3 Ground 4 AUX line from Link The Model 4 does not expose any LED signals Internally the LED signals affect the test points in the following ways Powerup state T1 High T2 Low T3 High T4 High 0x12 Red LED ON T1 Low T2 Low T3 High T4 High 013 Green LED On T1 High T2 Low T3 High T4 Low 0x14 Turn off LEDs T1 High T2 Low T3 High T4 High this is the same as power up All of the test pins T1 T4 are connected to the microprocessor via a 470 Ohm resistor The 1 Wire 5 supply should be used for the positive side of an LED if used with the internal connections 1 Wire 5 is available in the round test point between J2 and T4 Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 2
8. or uses no switches Its approach to location is to monitor the bus traffic and add additional information to the 1 wire data stream during a search or Alarm Search ROM command LinkLocator can be used with any iButton probe head Simply wire the LinkLocator between the probe head and the 1 wire bus Multiple LinkLocator scan reside on the same bus The 1 wire behind the LinkLocator must be kept short a maximum length of 1 5 meters is recommended Several models of the LinkLocator include additional functionality The Model 1 LinkLocator is designed for use in retrofit applications The Model 2 is an end user package with dual RJ45 connectors The Model 2 is intended for proof of concept evaluations The Model 3 iButton LinkReader is designed for new installations and is packaged to minimize installation costs LinkLocator technology is also available for OEM s as a chip level product for inclusion in the OEM s product The chip level product is available in 8 pin DIP and SOIC 150 packages Chip level products are available only under NDA and purchase minimums apply Chip level products are available as PB free parts for OEM s designing for the EU market Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 3 iButtonLink Software Programming Locate Mode Locate Mode happens completely within the NORMAL OW protocol mode Normal protocol mode is selected by the
9. ple The user wishes to produce an inventory of all LinkLocator s on the bus X Specify eXtended mode The Link45 will respond X lt CR gt lt LF gt f The Link45 will respond Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 5 iButtonLink SYYYYYYYYYYYYYYYY lt CR gt lt LF gt Where S is the status of the search Possible values are N E yyyyyyyyyyyyyyyy Serial Number of the first LinkLocator on the eXtended Bus Then the programmer will issue next commands n retrieving the serial number of each of the LinkLocator s until the Status character is indicating that the search is complete Executing Extended Mode Commands Note In extended mode the binary mode commands must be sent before a timeout in the LinkLocator expires It is nearly impossible to hand type the command at the correct speed The best methods to send the command are a through a program or b by entering the command into Notepad and then using a copy and paste to enter the entire string at one time Note An extended mode binary command will only work if it directly follows a reset How to check the version number of a LinkLocator This example assumes that the LinkLocator is the only item on the bus so that the Skip ROM Command 0xCC may be used to select the LinkLocator 1 Enter extended mode Command Response X X lt CR gt lt LF gt 2 R
10. ponse r PFE 3 Send the command to read the status This is a binary mode command Turn on Red LED Command Response b5S55000000000000000012FF b55000000000000000012FF Turn on Green LED Command Response Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 7 iButtonLink b55000000000000000013FF b55000000000000000013FF Turn off both LEDs Command Response b55000000000000000014 FF b55000000000000000014FF The above command consists of the following parts b Enter binary mode 550000000000000000 Match ROM Command this command selects one slave on the bus that has an address of 0000000000000000 12 13 or 14 Command byte that is sent to the specific LinkLocator FF This dummy byte is modified by the slaves when data is transmitted to the host In the above command the OxFF sent to the LinkLocator is not changed by the LinkLocator Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 8 iButtonLink TEEN NOLOGY Model and Wiring Information Four models of the LinkLocator have existed Two models currently are available Model 1 The LinkLocator Model is supplied as an encapsulated potted package cylinder shaped The dimensions are 0 5 inch diameter 1 5 inch length The hookup wires exit the cylinder on one end This package is great for OEM appl
11. transferred to restricted end users or countries Buyer hereby agrees to comply with all applicable export control laws and regulations and will not use or export iButton Link Products directly or indirectly in violation of these laws Copyrights As used in this document 1 wire and iButton are the registered trademarks of Maxim Computer Products FxB is the trademark of Alicit Software Engineering LLC LinkLocator and iButton LinkReader are the trademarks of iButton Link LLC Copyright 2005 2014 iButtonLink LLC All rights reserved 3 5 2014 8 29 PM Page 13
Download Pdf Manuals
Related Search