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NAME

       EDS -Embedded Data Systems Sensors
       EDS0064 -Temperature
       EDS0065 -Temperature and Humidity
       EDS0066 -Temperature and Barometric Pressure
       EDS0067 -Temperature and Light
       EDS0068 -Temperature, Barometric Pressure and Light
       EDS0071 -RTD 4-wire temperature
       EDS0072 -RTD 3-wire temperature

SYNOPSIS

       Embedded Data Systems microprocessor-based sensors

   Sub-type ( all )
       7E [.]XXXXXXXXXXXX[XX][/[ device_id | device_type | tag ]]

   Memory ( all )
       7E [.]XXXXXXXXXXXX[XX][/[ memory | pages/page.[0-2|ALL] ]]

   Standard ( all )
       7E  [.]XXXXXXXXXXXX[XX][/[  address | crc8 | id | locator | r_address | r_id | r_locator |
       type ]]

   Temperature ( EDS0064/5/6/7/8 )
       7E.XXXXXXXXXXXX/EDS006X [/[  temperature  |  counters/seconds  |  alarm/  temp_[hi|low]  |
       set_alarm/ temp_[hi|low] | threshold/ temp_[hi|low] ]]

   Humidity ( EDS0065/8 )
       7E.XXXXXXXXXXXX/EDS006X  [/[  humidity  |  humidex  |  dew_point  |  heat_index  |  alarm/
       humidity_[hi|low]  |  alarm/  humidex_[hi|low]  |  alarm/  dew_point_[hi|low]   |   alarm/
       heat_index_[hi|low]   |  set_alarm/  humidity_[hi|low]  |  set_alarm/  humidex_[hi|low]  |
       set_alarm/   dew_point_[hi|low]   |   set_alarm/    heat_index_[hi|low]    |    threshold/
       humidity_[hi|low]   |   threshold/  humidex_[hi|low]  |  threshold/  dew_point_[hi|low]  |
       threshold/ heat_index_[hi|low] ]]

   Barometric Pressure ( EDS0066/8 )
       7E.XXXXXXXXXXXX/EDS006X  [/[  pressure  |  inHg  |  alarm/  pressure_[hi|low]   |   alarm/
       inHg_[hi|low]  |  set_alarm/  pressure_[hi|low]  |  set_alarm/  inHg_[hi|low] | threshold/
       pressure_[hi|low] | threshold/ inHg_[hi|low] ]]

   Light ( EDS0067/8 )
       7E.XXXXXXXXXXXX/EDS006X [/[ light | alarm/ light_[hi|low] |  set_alarm/  light_[hi|low]  |
       threshold/ light_[hi|low] ]]

   RTD Temperature ( EDS0071/2 )
       7E.XXXXXXXXXXXX/EDS007X  [/[  temperature  |  resistance  |  raw  |  delay  |  user_byte |
       calibration/[key|constant]   |   counter/[seconds|samples]   |    alarm/temp_[hi|low]    |
       alarm/RTD_[hi_low]     |     set_alarm/temp_[hi|low]     |     set_alarm/RTD_[hi_low]    |
       threshold/temp_[hi|low] | threshold/RTD_[hi_low] ]]

   LED ( all )
       7E.XXXXXXXXXXXX/EDS00XX/LED/[state|control]

   relay ( all )
       7E.XXXXXXXXXXXX/EDS00XX/relay/[state|control]

FAMILY CODE

       7E

TEMPERATURE

   EDS006X/temperature
       read-only, floating-point
       Temperature for the EDS006X series of chips. In the  -55C  to  125C  range,  with  0.0636C
       precision.  The  temperature  is  read every second, continually. Data is presented in the
       specified temperature scale, Celsius by default.

   EDS007X/temperature
       read-only, floating-point
       Temperature for the EDS007X series of chips. Read using a wide-range precise  RTD  sensor.
       Typical  range  is  -60C to 260C with 0.15C accuracy, although a range of -200C to 850C is
       possible. The temperature is read every second unless a  longer  EDS007X/delay  is  given.
       Data is presented in the specified temperature scale, Celsius by default.

   EDS007X/resistance
       read-only, floating-point
       Actual  measured  resistance  (Ohms) of the RTD element. Useful if the RTD element doesn't
       conform to the typical European IEC 60751 standard.

HUMIDITY

   EDS006X/humidity
       read-only, floating-point
       Relative humidity in the 0-100 range (percent). Read every 0.2 seconds.

   EDS006X/dew_point
       read-only, floating-point
       Dew point computed from EDS006X/temperature  and  EDS006X/humidity  computered  every  0.2
       seconds.  Data  is  a  calculated temperature and is reported in the specified temperature
       scale. Default Celsius.

   EDS006X/heat_index
       read-only, floating-point
       Heat index computed from EDS006X/temperature and  EDS006X/humidity  computered  every  0.2
       seconds.  Data  is  a  calculated temperature and is reported in the specified temperature
       scale. Default Celsius.

   EDS006X/humidex
       read-only, floating-point
       Humidex  (popular  in  Canada)  computed  from  EDS006X/temperature  and  EDS006X/humidity
       computered every 0.2 seconds. Data is a percent and reported in the 0-100 range.

LIGHT

   EDS006X/light
       read-only, unsigned integer
       Ambient light in Lux. Measured every 0.2 seconds.

PRESSURE

   EDS006X/pressure
       read-only, floating-point
       Ambient pressure, measured every 0.2 seconds. Data in the selected pressure scale (default
       mBar).

   EDS006X/inHg
       read-only, floating-point
       Ambient pressure, measured every 0.2 seconds. Data in the inHg scale.

THRESHOLD

       High and low range of acceptable sensor readings. Values outside this range  will  trigger
       an alarm if the corresponding EDS00XX/set_alarm flag is set.

   EDS00XX/threshold/temp_hi EDS00XX/threshold/temp_low
       read-write, floating-point
       Threshold temperatures in the specified temperature scale. Default Celsius.

   EDS006X/threshold/humidity_hi EDS006X/threshold/humidity_low
   EDS006X/threshold/dew_point_hi EDS006X/threshold/dew_point_low
   EDS006X/threshold/heat_index_hi EDS006X/threshold/heat_index_low
   EDS006X/threshold/humidex_hi EDS006X/threshold/humidex_low
       read-write, floating-point
       Threshold  humidity  values.   Dew  point  and Heat index are in the specified temperature
       scale. Default Celsius.

   EDS006X/threshold/pressure_hi EDS006X/threshold/pressure_low
   EDS006X/threshold/inHg_hi EDS006X/threshold/inHg_low
       read-write, floating-point
       Threshold barometric pressure values.  Pressure is the specified pressure  scale.  Default
       mBar.

   EDS006X/threshold/light_hi EDS006X/threshold/light_low
       read-write, unsigned
       Threshold light (lux) values.

   EDS007X/threshold/resistance_hi EDS007X/threshold/resistance_low
       read-write, floating-point
       Threshold RTD resistance values (Ohm).

SET ALARM

       Set  conditional alarm to trigger if corresponding flag is set. Also must set high and low
       threshold.

   EDS00XX/set_alarm/temp_hi EDS00XX/set_alarm/temp_low
   EDS006X/set_alarm/humidity_hi EDS006X/set_alarm/humidity_low
   EDS006X/set_alarm/dew_point_hi EDS006X/set_alarm/dew_point_low
   EDS006X/set_alarm/heat_index_hi EDS006X/set_alarm/heat_index_low
   EDS006X/set_alarm/humidex_hi EDS006X/set_alarm/humidex_low
   EDS006X/set_alarm/pressure_hi EDS006X/set_alarm/pressure_low
   EDS006X/set_alarm/inHg_hi EDS006X/set_alarm/inHg_low
   EDS006X/set_alarm/light_hi EDS006X/set_alarm/light_low
   EDS007X/set_alarm/resistance_hi EDS007X/set_alarm/resistance_low
       read-write, yes-no
       Flag to set corresponding out-of-range alarm. "1" turns on flag, and "0" turns off.

ALARM

       Show or clear the out-of-range flags. When set, the device will respond to  a  conditional
       search.  Clearing  the  flags  is performed with the EDS00XX/alarm/clear command, not just
       having the measured value return to the center range.

   EDS00XX/alarm/clear
       write-only, yes-no
       Write "1" to clear ALL the alarm flags.

   EDS00XX/alarm/temp_hi EDS00XX/alarm/temp_low
   EDS006X/alarm/humidity_hi EDS006X/alarm/humidity_low
   EDS006X/alarm/dew_point_hi EDS006X/alarm/dew_point_low
   EDS006X/alarm/heat_index_hi EDS006X/alarm/heat_index_low
   EDS006X/alarm/humidex_hi EDS006X/alarm/humidex_low
   EDS006X/alarm/pressure_hi EDS006X/alarm/pressure_low
   EDS006X/alarm/inHg_hi EDS006X/alarm/inHg_low
   EDS006X/alarm/light_hi EDS006X/alarm/light_low
   EDS007X/alarm/resistance_hi EDS007X/alarm/resistance_low
       read-only, yes-no
       Flag to set corresponding out-of-range alarm. "1" turns on flag, and "0" turns off.

RELAY

       Optionally found on the EDS006X and EDS007X. Can be controlled by software  or  the  alarm
       condition.

   EDS00XX/relay/control
       read-write, unsigned
       Set the relay control scheme:

       0      alarm control with hysteresis

       1      alarm control but need EDS00XX/alarm/clear to unset

       2      Control with EDS00XX/relay/state

       3      Always off

   EDS00XX/relay/state
       read-write, yes-no
       Turn the relay on or off if the EDS00XX/relay/control is set to 2

LED light

       Found on the EDS006X and EDS007X. Can be controlled by software or the alarm condition.

   EDS00XX/LED/control
       read-write, unsigned
       Set the LED control scheme:

       0      alarm control with hysteresis

       1      alarm control but need EDS00XX/alarm/clear to unset

       2      Control with EDS00XX/LED/state

       3      Always off

   EDS00XX/LED/state
       read-write, yes-no
       Turn the LED on or off if the EDS00XX/LED/control is set to 2

COUNTER

   EDS00XX/counter/seconds
       read-only, unsigned integer
       Approximate seconds since power up.

   EDS007X/counter/samples
       read-only, unsigned integer
       Approximate samples since power up.

MEMORY

   memory
       read-write, binary
       96  bytes  of  memory.  Not  all  is  writable.  Access  to  EDS00XX  functions  is better
       accomplished through the data fields, which expose all the chip features.

   pages/page.0 ... pages/page.2 pages/page.ALL
       read-write, binary
       Memory is split into 3 pages of 32 bytes each.  Only  page  2  is  writable.   ALL  is  an
       aggregate of the pages. Each page is accessed sequentially.

SUB-TYPE

   tag
       read-only, ascii
       Text description of the device. Up to 30 characters.

   device_type
       read-only, ascii
       Device name. E.g: "EDS0071"

   device_id
       read-only, unsigned
       Number corresponding to the hexidecimal type. E.g:
       EDS0071 -> 0x0071 -> 113 in decimal

STANDARD PROPERTIES

   address
   r_address
       read-only, ascii
       The entire 64-bit unique ID. Given as upper case hexidecimal digits (0-9A-F).
       address starts with the family code
       r  address  is the address in reverse order, which is often used in other applications and
       labeling.

   crc8
       read-only, ascii
       The 8-bit error correction portion.  Uses  cyclic  redundancy  check.  Computed  from  the
       preceding  56  bits of the unique ID number. Given as upper case hexidecimal digits (0-9A-
       F).

   family
       read-only, ascii
       The 8-bit family code. Unique to each type of device.  Given  as  upper  case  hexidecimal
       digits (0-9A-F).

   id
   r_id
       read-only, ascii
       The  48-bit  middle  portion  of the unique ID number. Does not include the family code or
       CRC. Given as upper case hexidecimal digits (0-9A-F).
       r id is the id in reverse order, which is often used in other applications and labeling.

   locator
   r_locator
       read-only, ascii
       Uses an extension of the 1-wire design from iButtonLink  company  that  associated  1-wire
       physical connections with a unique 1-wire code. If the connection is behind a Link Locator
       the locator will show a unique 8-byte number  (16  character  hexidecimal)  starting  with
       family code FE.
       If no Link Locator is between the device and the master, the locator field will be all FF.
       r locator is the locator in reverse order.

   present (DEPRECATED)
       read-only, yes-no
       Is the device currently present on the 1-wire bus?

   type
       read-only, ascii
       Part  name  assigned  by Dallas Semi. E.g.  DS2401 Alternative packaging (iButton vs chip)
       will not be distiguished.

ALARMS

       None.

DESCRIPTION

   1-Wire
       1-wire is a wiring protocol and series of devices  designed  and  manufactured  by  Dallas
       Semiconductor,  Inc.  The bus is a low-power low-speed low-connector scheme where the data
       line can also provide power.

       Each device is uniquely and unalterably numbered during  manufacture.  There  are  a  wide
       variety  of  devices,  including memory, sensors (humidity, temperature, voltage, contact,
       current), switches, timers and data  loggers.  More  complex  devices  (like  thermocouple
       sensors)  can  be  built with these basic devices. There are also 1-wire devices that have
       encryption included.

       The 1-wire scheme uses a single bus master and multiple slaves on the same wire.  The  bus
       master  initiates  all  communication.  The  slaves  can  be  individually  discovered and
       addressed using their unique ID.

       Bus masters come in a variety of configurations including serial, parallel,  i2c,  network
       or USB adapters.

   OWFS design
       OWFS  is  a  suite of programs that designed to make the 1-wire bus and its devices easily
       accessible. The underlying priciple is to create a virtual filesystem, with the unique  ID
       being the directory, and the individual properties of the device are represented as simple
       files that can be read and written.

       Details of the individual slave or master design are hidden behind a consistent interface.
       The  goal  is to provide an easy set of tools for a software designer to create monitoring
       or control applications. There are some performance enhancements  in  the  implementation,
       including  data  caching,  parallel  access  to  bus  masters,  and  aggregation of device
       communication.  Still  the  fundemental  goal  has  been  ease  of  use,  flexibility  and
       correctness rather than speed.

   EDS00XX Overview
       The  EDS00XX  sensors  are  a  family  of  devices  from  Embedded Data Systems.  Although
       provisional support for several types is included, only early EDS0071 has been tested with
       OWFS.

       The sensors all share the same 7E family code. They have the same first memory page layout
       with a text tag property that describes them, and a sub-type field giving  the  particular
       sensor.  The  data  properties shown in a directory listing will be specific to the sensor
       sub-type.

   EDS0071
       The EDS0071 (3) is a micro-processor  based  1-wire  slave  made  by  EDS  (Embedded  Data
       Systams).  Is  uses  a  high  accuracy and extended range RTD sensor to accurately measure
       temperatures.

ADDRESSING

       All 1-wire devices are factory assigned a unique 64-bit address. This address  is  of  the
       form:

       Family Code
              8 bits

       Address
              48 bits

       CRC    8 bits

       Addressing under OWFS is in hexidecimal, of form:

              01.123456789ABC

       where 01 is an example 8-bit family code, and 12345678ABC is an example 48 bit address.

       The dot is optional, and the CRC code can included. If included, it must be correct.

DATASHEET

       https://www.embeddeddatasystems.com/1-Wire-Interface-for-4-Wire-RTD_p_165.html

SEE ALSO

   Programs
       owfs  (1)  owhttpd  (1) owftpd (1) owserver (1) owdir (1) owread (1) owwrite (1) owpresent
       (1) owtap (1)

   Configuration and testing
       owfs (5) owtap (1) owmon (1)

   Language bindings
       owtcl (3) owperl (3) owcapi (3)

   Clocks
       DS1427 (3) DS1904(3) DS1994 (3) DS2404 (3) DS2404S (3) DS2415 (3) DS2417 (3)

   ID
       DS2401 (3) DS2411 (3) DS1990A (3)

   Memory
       DS1982 (3) DS1985 (3) DS1986 (3) DS1991 (3) DS1992 (3) DS1993 (3) DS1995  (3)  DS1996  (3)
       DS2430A (3) DS2431 (3) DS2433 (3) DS2502 (3) DS2506 (3) DS28E04 (3) DS28EC20 (3)

   Switches
       DS2405 (3) DS2406 (3) DS2408 (3) DS2409 (3) DS2413 (3) DS28EA00 (3)

   Temperature
       DS1822  (3) DS1825 (3) DS1820 (3) DS18B20 (3) DS18S20 (3) DS1920 (3) DS1921 (3) DS1821 (3)
       DS28EA00 (3) DS28E04 (3) EDS0064 (3) EDS0065 (3)  EDS0066  (3)  EDS0067  (3)  EDS0068  (3)
       EDS0071 (3) EDS0072 (3)

   Humidity
       DS1922 (3) DS2438 (3) EDS0065 (3) EDS0068 (3)

   Voltage
       DS2450 (3)

   Resistance
       DS2890 (3)

   Multifunction (current, voltage, temperature)
       DS2436  (3)  DS2437  (3) DS2438 (3) DS2751 (3) DS2755 (3) DS2756 (3) DS2760 (3) DS2770 (3)
       DS2780 (3) DS2781 (3) DS2788 (3) DS2784 (3)

   Counter
       DS2423 (3)

   LCD Screen
       LCD (3) DS2408 (3)

   Crypto
       DS1977 (3)

   Pressure
       DS2406 (3) -- TAI8570 EDS0066 (3) EDS0068 (3)

AVAILABILITY

       http://www.owfs.org

AUTHOR

       Paul Alfille (paul.alfille@gmail.com)