1mCM001(3)                    One-Wire File System                    mCM001(3)
2
3
4

NAME

6       mCM001 - AC Current Monitor
7

SYNOPSIS

9   AC Amp meter.
10       A2  [.]XXXXXXXXXXXX[XX][/[  current  |  address | crc8 | id | locator |
11       r_address | r_id | r_locator | type ]]
12

FAMILY CODE

14       A2
15

SPECIAL PROPERTIES

17   current
18       read-write, floating point
19       Reads the current.
20
21       Range  0-5A
22
23       Resolution
24              0.01A
25
26       Units  A (amperes)
27
28       Frequency
29              AC (alternating current 50-60Hz)
30

STANDARD PROPERTIES

32   address
33   r_address
34       read-only, ascii
35       The entire 64-bit unique ID. Given as  upper  case  hexidecimal  digits
36       (0-9A-F).
37       address starts with the family code
38       r address is the address in reverse order, which is often used in other
39       applications and labeling.
40
41   crc8
42       read-only, ascii
43       The 8-bit error correction portion. Uses cyclic redundancy check.  Com‐
44       puted  from  the  preceding  56  bits of the unique ID number. Given as
45       upper case hexidecimal digits (0-9A-F).
46
47   family
48       read-only, ascii
49       The 8-bit family code. Unique to each type of device.  Given  as  upper
50       case hexidecimal digits (0-9A-F).
51
52   id
53   r_id
54       read-only, ascii
55       The 48-bit middle portion of the unique ID number. Does not include the
56       family code or CRC. Given as upper case hexidecimal digits (0-9A-F).
57       r id is the id in reverse order, which is often used in other  applica‐
58       tions and labeling.
59
60   locator
61   r_locator
62       read-only, ascii
63       Uses  an  extension  of the 1-wire design from iButtonLink company that
64       associated 1-wire physical connections with a unique  1-wire  code.  If
65       the  connection is behind a Link Locator the locator will show a unique
66       8-byte number (16 character hexidecimal) starting with family code FE.
67       If no Link Locator is between the device and the  master,  the  locator
68       field will be all FF.
69       r locator is the locator in reverse order.
70
71   present (DEPRECATED)
72       read-only, yes-no
73       Is the device currently present on the 1-wire bus?
74
75   type
76       read-only, ascii
77       Part  name  assigned by Dallas Semi. E.g.  DS2401 Alternative packaging
78       (iButton vs chip) will not be distiguished.
79

ALARMS

81       None.
82

DESCRIPTION

84   1-Wire
85       1-wire is a wiring protocol and series of devices designed and manufac‐
86       tured  by  Dallas  Semiconductor, Inc. The bus is a low-power low-speed
87       low-connector scheme where the data line can also provide power.
88
89       Each device is uniquely and unalterably  numbered  during  manufacture.
90       There  are a wide variety of devices, including memory, sensors (humid‐
91       ity, temperature, voltage, contact, current), switches, timers and data
92       loggers.  More complex devices (like thermocouple sensors) can be built
93       with these basic devices. There  are  also  1-wire  devices  that  have
94       encryption included.
95
96       The  1-wire  scheme uses a single bus master and multiple slaves on the
97       same wire. The bus master initiates all communication. The  slaves  can
98       be individually discovered and addressed using their unique ID.
99
100       Bus  masters come in a variety of configurations including serial, par‐
101       allel, i2c, network or USB adapters.
102
103   OWFS design
104       OWFS is a suite of programs that designed to make the  1-wire  bus  and
105       its  devices easily accessible. The underlying principle is to create a
106       virtual filesystem, with the unique ID being  the  directory,  and  the
107       individual  properties  of  the  device are represented as simple files
108       that can be read and written.
109
110       Details of the individual slave or master design are  hidden  behind  a
111       consistent interface. The goal is to provide an easy set of tools for a
112       software designer to create monitoring or control  applications.  There
113       are some performance enhancements in the implementation, including data
114       caching, parallel access to bus masters, and aggregation of device com‐
115       munication.  Still the fundemental goal has been ease of use, flexibil‐
116       ity and correctness rather than speed.
117
118   mCM001
119       The mCM001 (3) is a Current meter from CMC Industrial  Electronics.  It
120       is packaged for industrial use.
121

ADDRESSING

123       All  1-wire  devices are factory assigned a unique 64-bit address. This
124       address is of the form:
125
126       Family Code
127              8 bits
128
129       Address
130              48 bits
131
132       CRC    8 bits
133
134       Addressing under OWFS is in hexidecimal, of form:
135
136              01.123456789ABC
137
138       where 01 is an example 8-bit family code, and 12345678ABC is an example
139       48 bit address.
140
141       The  dot  is  optional,  and the CRC code can included. If included, it
142       must be correct.
143

WEBSITE

145       http://www.cmciel.com/products-solutions/individual-products/ac-cur
146       rent-sensor-mcm001/
147

SEE ALSO

149   Programs
150       owfs  (1)  owhttpd  (1)  owftpd  (1)  owserver (1) owdir (1) owread (1)
151       owwrite (1) owpresent (1) owtap (1)
152
153   Configuration and testing
154       owfs (5) owtap (1) owmon (1)
155
156   Language bindings
157       owtcl (3) owperl (3) owcapi (3)
158
159   Clocks
160       DS1427 (3) DS1904 (3) DS1994 (3) DS2404  (3)  DS2404S  (3)  DS2415  (3)
161       DS2417 (3)
162
163   ID
164       DS2401 (3) DS2411 (3) DS1990A (3)
165
166   Memory
167       DS1982  (3)  DS1985  (3)  DS1986  (3)  DS1991 (3) DS1992 (3) DS1993 (3)
168       DS1995 (3) DS1996 (3) DS2430A (3) DS2431  (3)  DS2433  (3)  DS2502  (3)
169       DS2506 (3) DS28E04 (3) DS28EC20 (3)
170
171   Switches
172       DS2405 (3) DS2406 (3) DS2408 (3) DS2409 (3) DS2413 (3) DS28EA00 (3)
173
174   Temperature
175       DS1822  (3)  DS1825  (3)  DS1820 (3) DS18B20 (3) DS18S20 (3) DS1920 (3)
176       DS1921 (3) DS1821 (3) DS28EA00 (3) DS28E04 (3) EDS0064 (3) EDS0065  (3)
177       EDS0066  (3)  EDS0067  (3) EDS0068 (3) EDS0071 (3) EDS0072 (3) MAX31826
178       (3)
179
180   Humidity
181       DS1922 (3) DS2438 (3) EDS0065 (3) EDS0068 (3)
182
183   Voltage
184       DS2450 (3)
185
186   Resistance
187       DS2890 (3)
188
189   Multifunction (current, voltage, temperature)
190       DS2436 (3) DS2437 (3) DS2438 (3)  DS2751  (3)  DS2755  (3)  DS2756  (3)
191       DS2760 (3) DS2770 (3) DS2780 (3) DS2781 (3) DS2788 (3) DS2784 (3)
192
193   Counter
194       DS2423 (3)
195
196   LCD Screen
197       LCD (3) DS2408 (3)
198
199   Crypto
200       DS1977 (3)
201
202   Pressure
203       DS2406 (3) TAI8570 (3) EDS0066 (3) EDS0068 (3)
204
205   Moisture
206       EEEF (3) DS2438 (3)
207

AVAILABILITY

209       http://www.owfs.org
210

AUTHOR

212       Paul Alfille (paul.alfille@gmail.com)
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216OWFS Manpage                         2003                            mCM001(3)
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