Wiki¶

• Table of contents
• Wiki
  • Modbus / RS485 isolated
    • non isoler
      • Fusibles réarmables
    • Texas Instruments ISOW14x2 Isolated RS-485 DC-DC Converter
    • ANALOG DEVICES LTM2881CV-5#PBF
    • ADM2865E Power Isolated, RS-485 Transceivers
    • Module de communication d'isolation, ADUM3201 + B0505XT TTL à RS485
    • RS485 I2C
  • XY5005E
  • XY6015L Step-Down Regulated Power Supply
    • Modbus
    • dps_modbus.py
    • test commande
    • notice
  • GUI Python
    • venv — Création d'environnements virtuels
    • pyqt5
    • XY6015L_pyGUI
  • Sources

Modbus / RS485 isolated¶

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

non isoler¶

Fusibles réarmables¶

Texas Instruments ISOW14x2 Isolated RS-485 DC-DC Converter¶

ANALOG DEVICES LTM2881CV-5#PBF¶

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

Code Farnell 4023829

ADM2865E Power Isolated, RS-485 Transceivers¶

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%

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

Attention RX sur TX

RS485 I2C¶

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

XY6015L Step-Down Regulated Power Supply¶

µC AT32F421 ARM® Cortex®-M4 core
Ctrl EG1163S BUCK DC-DC de Rectification synchrone 300kHz
MOS NCE82H140

Modbus¶

voir documentation 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

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

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

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

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

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

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

dps_modbus.py¶

/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 # ?

test commande¶

sur /dev/ttyACM0

Broadcast Power ON

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

Broadcast Power OFF

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

sur /dev/ttyUSB0

Broadcast Power ON

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

Broadcast Power OFF

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

notice¶

presser [SW] pendant 2s pour accéder aux paramètres

GUI Python¶

venv — Création d'environnements virtuels¶

$ python3 -m venv venv

Pour activer l'environnement, exécutez

source venv/bin/activate

. venv/bin/activate

sous Windows

env\Scripts\activate.bat

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

deactivate

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

pyqt5¶

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

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

XY6015L_pyGUI¶

lancement de l'interface

python dps_GUI_program.py

configuration du port com

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

[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:
...

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