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

h3. Modbus

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/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

Modbus registers:

U_SET = 0

I_SET = 1

UOUT = 2

IOUT = 3

POWER = 4

UIN = 5

Ah = 6

PROTECT = 7 # not tested

Wh = 8

Time = 11

Temp = 13

Lock = 15

CV_CC = 17

ONOFF = 18

Celsius = 19

MODEL = 22 # ?

VERSION = 23 # ?

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://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