GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
mAM001(3) One-Wire File System mAM001(3)

mAM001 - Analog Input Module

B2 [.]XXXXXXXXXXXX[XX][/[ current | volts | address | crc8 | id | locator | r_address | r_id | r_locator | type ]]

B2

Note that the volts and current are mutually exclusive and set by switches on the sensor case.
Although both volts and current will give a value, only one of the two is correct. (Based on the electrical connections and switch settings).

read-write, floating point
 
Reads the current.
Range
0-20mA
Resolution
12 bit (5 uA)
Units
A (amperes)
Frequency
DC

read-write, floating point
 
Reads the voltage.
Range
0-10V
Resolution
12 bit (2.5 mV)
Units
V (volts)
Frequency
DC

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.

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 hexadecimal digits (0-9A-F).

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

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 hexadecimal digits (0-9A-F).
 
r id is the id in reverse order, which is often used in other applications and labeling.

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 hexadecimal) 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.

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

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

None.

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 is a suite of programs that designed to make the 1-wire bus and its devices easily accessible. The underlying principle 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 fundamental goal has been ease of use, flexibility and correctness rather than speed.

The mAM001 (3) is a voltage or current meter from CMC Industrial Electronics. It is packaged for industrial use.

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 hexadecimal, 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.

http://www.cmciel.com/products-solutions/individual-products/analog-input-mam001/

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

owfs (5) owtap (1) owmon (1)

owtcl (3) owperl (3) owcapi (3)

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

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

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)

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

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) MAX31826 (3)

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

DS2450 (3)

DS2890 (3)

DS2436 (3) DS2437 (3) DS2438 (3) DS2751 (3) DS2755 (3) DS2756 (3) DS2760 (3) DS2770 (3) DS2780 (3) DS2781 (3) DS2788 (3) DS2784 (3)

DS2423 (3)

LCD (3) DS2408 (3)

DS1977 (3)

DS2406 (3) TAI8570 (3) EDS0066 (3) EDS0068 (3)

EEEF (3) DS2438 (3)

http://www.owfs.org

Paul Alfille (paul.alfille@gmail.com)
2003 OWFS Manpage

Search for    or go to Top of page |  Section 3 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.