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. DFR0845 

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Ce module de transfert de signal RS485 vers UART actif et isolé est livré avec des circuits de protection tels que l'isolation de puissance et le TVS. Compatible avec la plupart des contrôleurs principaux, il présente les caractéristiques d'une vitesse de communication rapide, de performances stables et fiables, d'une sécurité élevée, etc., et peut être appliqué à divers capteurs industriels, équipements de contrôle industriel ou applications nécessitant une conversion de signal RS485.

https://wiki.dfrobot.com/Gravity_Active_Isolated_RS485_to_UART_Signal_Converter_SKU_DFR0845

 N° Mouser :

426-DFR0845 

www.gotronic.fr

Code: 37411

https://fr.farnell.com

Code Commande :

3974134

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

h3. modification port com

La vitesse de communication par défaut du port série DPS5005 est de 9 600 bauds, mais vous pouvez la modifier en alimentant l'alimentation tout en maintenant le bouton V/M1 enfoncé. Lorsque la modification est effectuée, appuyez deux fois sur le bouton « set » pour enregistrer la nouvelle configuration.

h3. Firmware alternatif

https://github.com/kanflo/opendps

h3. Brochage port com

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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