I ripped the following from the datasheet of the device in
question<http://www.cmciel.com/Technical%20Manuals/mAM001%20Technical%20Manual.pdf>,
in case anyone recognized whatever is inside the module.
=================================================
As a Dallas 1-Wire(R) device, the sensor value is returned using the read
scratch function as 3
bytes, the first 2 bytes a signed word containing the analog value and the
3rd byte the Dallas 1-
Wire(R) - 8 bit CRC. The family code for the sensor is 178 decimal or B2 Hex.
The sensor
responds to the following Dallas function codes:
Code Decimal Code Hex Function
240 F0 Search ROM
85 55 Match ROM
15 0F Read ROM
51 33 Read ROM
204 CC Skip ROM
190 BE Read Scratch, 3 bytes, low byte + high byte + Dallas 8 bit CRC
Refer to Dallas Semiconductor documentation for complete details on the
operation of the
Dallas 1-Wire(R) signaling system.
On Jan 28, 2008 7:05 AM, Paul Alfille <[EMAIL PROTECTED]> wrote:
> From: Lapointe, Claude
> Date: 2008/1/25
> Subject: CMC industrial Electronics Ltd 1-wire module
> To: Paul Alfille <[EMAIL PROTECTED]>
>
>
> Hi Paul,
>
> I buy recently a 4-20 ma Analog Input Module 1-wire of CMC Industrial
> Electronics Ltd model mAM001
>
> http://www.cmciel.com/Commercial%20Monitoring.htm
>
> The owfs don't find this sensor.
>
> Do you know this compagny and his product? Because I want use the 1-wire
> to 4-20ma convertor to connect old 4-20ma humidity sensor and read it with
> owfs.
>
>
> Claude Lapointe, ing.
> Transports Québec
> Service des technologies d'exploitation
>
>
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