Frédéric Blanc » Power Supply SCPI

h1. Wiki

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h2. Modbus / RS485 isolated

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https://arduino103.blogspot.com/2021/10/decoder-une-trame-rs485-loscilloscope.html

h3. non isoler

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h4. Fusibles réarmables

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h3. Texas Instruments ISOW14x2 Isolated RS-485 DC-DC Converter

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h3.  ANALOG DEVICES LTM2881CV-5#PBF

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Transceiver, RS422, RS485, 20 Mbps, 1 Driver, 1 Récepteur, 4,5 à 5.5V, 0 à 70°C, LGA-32

Code Farnell 4023829

h3. ADM2865E Power Isolated, RS-485 Transceivers

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|Code Farnell|Référence Fabricant	|Fabricant / Description|

|4023816	|ADM2865EBRNZ	|ANALOG DEVICES  Transceiver, RS422, RS485, 25 Mbps, 1 Driver, 1 Récepteur, 3 à 5.5V, -40 à 105°C, WSOIC-28|

|1456395	|SM712.TCT	|SEMTECH  Diode TVS, SM, Bidirectionelle, 12 V, 26 V, SOT-23, 3 Broche(s)|

|1515786	|BLM15HD182SN1D	|MURATA  Perle de ferrite, 0402 [1005 Metric], 1.8 kohm, 200 mA, BLM15H, 2.2 ohm, ± 25%|

|1867958	|08053D106KAT2A	|KYOCERA AVX  Condensateur céramique multicouche CMS, 10 µF, 25 V, 0805 [Métrique 2012], ± 10%, X5R|

|2443238	|BLM18HE601SN1D	|MURATA  Perle de ferrite, 0603 [1608 Metric], 600 ohm, 800 mA, BLM18H, 0.25 ohm, ± 25%|

h3. Module de communication d'isolation, ADUM3201 + B0505XT TTL à RS485

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*Attention RX sur TX*

h3. RS485 I2C

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h2. XY5005E

com le port 4 broches JST 1.25 ne semble pas avoir de TX, ni de RX. Il n'y a pas non plus de menu pour le chois de l'adressage

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h2. XY6015L Step-Down Regulated Power Supply

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µC AT32F421  ARM® Cortex®-M4 core

Ctrl EG1163S BUCK DC-DC de Rectification synchrone 300kHz

MOS NCE82H140

h2. DPS5005

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Module d'alimentation à afficheur LCD réglable en tension de 0 à 50 Vcc et en intensité de 0 à 5 A. L'écran couleur de 1,44'' offre un affichage particulièrement détaillé et complet des informations.

https://www.gotronic.fr/art-alimentation-programmable-dps5005-29294.htm

h2. DPH5005

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Module d'alimentation à afficheur LCD 1,44" réglable en tension de 0 à 50 Vcc et en intensité de 0 à 5 A. Ce module délivre un signal de sortie haute résolution réglable par paliers de 10 mV et de 1 mA.

https://www.gotronic.fr/art-alimentation-programmable-dph5005-31537.htm

h3. Modbus

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voir documentation document:"protocol -english translation V1.2"

|_.function code|_.Definition|_.Operation (binary)|

|0x03|Read register data|Read data from one or more registers|

|0x06|Write a single register|Write a set of binary data to a single register|

|0x10|Write multiple registers|Write multiple sets of binary data to multiple registers|

|\5=. *0x03 Read the function of the host format* |

|address code|function code|Register start address |Number of register

 addresses n (1 ~ 32)|CRC Check code|

|1 byte|1 byte|2 byte|2 byte|2 byte|

|\5=. *0x03 Read function Slave returns format*|

|address code|function code|Returns the number of bytes 2 * n|Register data|CRC Check code|

|1 byte|1 byte|1 byte|2*n Bytes|2 byte|

|\5=. *0x06 Write a single register function in host format*|

|address code|function code|Register address|Register data|CRC Check code|

|1 byte|1 byte|2 byte|2 byte|2 byte|

|\5=. *0x06 Write a single register function from the machine to return the format*|

|address code|function code|Register address|Register data|CRC Check code|

|1 byte|1 byte|2 byte|2 byte|2 byte|

|\6=. *0x10 Write function host format*|

|address code|function code|Register start address|Number of register addresses

n (1 ~ 32)|Write the number of bytes 2 * n|Register data|CRC Check code|

|1 byte|1 byte|2 byte|2 byte|1 byte|2*n byte|2 byte|

|\5=. *0x10 Write function slave return format*|

|address code|function code|Register start address|Number of register addresses

n (1 ~ 32)|CRC Check code|

|1 byte|1 byte|2 byte|2 byte|2 byte|

Protocol register description (single register address data for double-byte data)

|name|Description|number of bytes|Decimal point|unit|Read and write|Register address|dps_modbus.py|

|U-SET|Voltage setting|2|2|V|R/W|0x0000|voltage_set|

|I-SET|Current setting|2|2|A|R/W|0x0001|current_set|

|UOUT|Output voltage display value|2|2|V|R|0x0002|voltage|

|IOUT|Output current display value|2|2|A|R|0x0003|current|

|POWER|Output power display value|2|2|W|R|0x0004|power|

|UIN|Input voltage display value|2|2|V|R|0x0005|voltage_in|

|LOCK|Key lock|2|0|-|R/W|0x0006|lock|

|PROTECT|Protection state|2|0|-|R|0x0007|protect|

|CVCC|Constant voltage constant current state|2|0|-|R|0x0008|cv_cc|

|ONOFF|Switch output|2|0|-|R/W|0x0009|onoff|

|B_LED|Backlight brightness level|2|0|-|R/W|0x000A|b_led|

|MODEL|Product number|2|0|-|R|0x000B|model|

|VERSON|Firmware version number|2|0|-|R|0x000C|version|

|EXTRACT_M|Quickly bring up data sets|2|0|-|W|0x0023|extract_m|

|U-SET|Voltage setting|2|2|V|R/W|0x0050|voltage_set2|

|I-SET|Current setting|2|3|A|R/W|0x0051|current_set2|

|S-OVP|Overvoltage protection|2|2|V|R/W|0x0052|s_ovp|

|S-OCP|Overcurrent protection value|2|3|A|R/W|0x0053|s_ocp|

|S-OPP|Over power protection value|2|1、2|W|R/W|0x0054|s_opp|

|B-LED|Backlight brightness level|2|0|-|R/W|0x0055|b_led2|

|M-PRE|The data is called to update the output|2|0|-|R/W|0x0056|m_pre|

|S-INI|Power on the output switch|2|2|-|R/W|0x0057|s_ini|

h3. dps_modbus.py

|commande|Description|

|voltage_set|Voltage setting|

|current_set|Current setting|

|voltage|Output voltage display value|

|current|Output current display value|

|power|Output power display value|

|voltage_in|Input voltage display value|

|lock|Key lock|

|protect|Protection state|

|cv_cc|Constant voltage constant current state|

|onoff|Switch output|

|b_led|Backlight brightness level|

|model|Product number|

|version|Firmware version number|

|extract_m|Quickly bring up data sets|

|voltage_set2|Voltage setting|

|current_set2|Current setting|

|s_ovp|Overvoltage protection|

|s_ocp|Overcurrent protection value|

|s_opp|Over power protection value|

|b_led2|Backlight brightness level|

|m_pre|The data is called to update the output|

|s_ini|Power on the output switch|

|read_all|Read data as a block, much faster than individual reads|

|write_voltage_current|write voltage & current as a block|

|write_all|write block|

/dev/ttyACM0 ou /dev/ttyUSB0

baud rate *115200*

Slave Address: 1..247 ( *0: broadcast* )

Function code: see later

Data: 0..252 byte(s)

*CRC16-MODBUS* : see https://crccalc.com/ for code.

https://github.com/LacobusVentura/MODBUS-CRC16

h3. test commande

sur /dev/ttyACM0

Broadcast Power ON

<pre><code class="shell">

echo -ne "\x00\x06\x00\x12\x00\x01\xE9\xDE" > /dev/ttyACM0

</code></pre>

Broadcast Power OFF

<pre><code class="shell">

echo -ne "\x00\x06\x00\x12\x00\x00\x28\x1E" > /dev/ttyACM0

</code></pre>

sur /dev/ttyUSB0

Broadcast Power ON

<pre><code class="shell">

echo -ne "\x00\x06\x00\x12\x00\x01\xE9\xDE" > /dev/ttyUSB0

</code></pre>

Broadcast Power OFF

<pre><code class="shell">

echo -ne "\x00\x06\x00\x12\x00\x00\x28\x1E" > /dev/ttyUSB0

</code></pre>

h3. notice

presser [SW] pendant 2s pour accéder aux paramètres 

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h2. GUI Python

h3. venv — Création d'environnements virtuels

<pre><code class="shell">

$ python3 -m venv venv

</code></pre>

Pour activer l'environnement, exécutez

<pre><code class="shell">

source venv/bin/activate

</code></pre>

<pre><code class="shell">

. venv/bin/activate

</code></pre>

sous Windows

<pre><code class="shell">

env\Scripts\activate.bat

</code></pre>

Vous devrez « quitter » ou « désactiver » votre environnement virtuel à l'aide de la commande 

<pre><code class="shell">

deactivate

</code></pre>

https://docs.python.org/fr/3/library/venv.html

h3. pyqt5

<pre><code class="shell">

pip3 install pyqt5 --config-settings --confirm-license= --verbose

</code></pre>

https://stackoverflow.com/questions/73714829/pip-install-pyqt5-it-cannot-go-on

h3. XY6015L_pyGUI

lancement de l'interface

<pre><code class="python">

python dps_GUI_program.py

</code></pre>

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configuration du port com

le port série peut être corrigé en modifiant le paramètre "port_set" dans "dps5005_limits.ini".

<pre><code class="shell">

[SectionZero]

The parameters below limit the code from incorrectly transmitting extreme values entered by the user:

if threshold exceeded value defaults to zero:

This file may be adapted for other versions of 'DPSxxxx' power supplies:

[SectionOne]

#leave empty "" for automatic port scanning or set serial port e.g. "/dev/cu.wchusbserial1410" or "/dev/ttyUSB0":

port_set: "/dev/ttyACM0"	#

#The parameters below limit the code from incorrectly transmitting extreme values entered by the user:

#if threshold exceeded value defaults to zero:

...

</code></pre>

h2. Sources

https://profimaxblog.ru/dps_update/

https://www.circuitstate.com/tutorials/what-is-rs-485-how-to-use-max485-with-arduino-for-reliable-long-distance-serial-communication/

http://xj900diversion.free.fr/bus/I2C%20-%20RS-485%20adapter.htm

https://github.com/AntaresAdroit/RDTech_PS_Comm

https://github.com/lambcutlet/DPS5005_pyGUI

https://github.com/kbs3056/XY6015L_pyGUI