cm5024z/reset-errors.py

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Python
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2021-09-12 13:56:27 +02:00
#!/usr/bin/python
# -*- coding: utf-8 -*-
import time
import serial, sys
import os
from datetime import datetime
from bitstring import BitArray
serial_timeout=0.1
byte3=0
byte4=0
byte5=0
byte6=0
i=0
pvfaultdesc = [0]*8
pvfaultdesc[0]="load short-circuit protection"
pvfaultdesc[1]="load overcurrent protection"
pvfaultdesc[2]="battery low-voltage protection"
pvfaultdesc[3]="reserved"
pvfaultdesc[4]="solar panel array1 open-circuit breakdown(it means the controller does not detect the solar panel voltage within 24h)"
pvfaultdesc[5]="solar panel array1 over-voltage protection"
pvfaultdesc[6]="delayed protection phase for load overcurrent"
pvfaultdesc[7]="shut the load compulsively"
def pv_reset_lowvoltage():
print("Reset Unterspannungs Sicherung:")
ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
command = "\x01\x51\x00\x00\x00\x00\x39"
global byte3
global byte4
ser.flushInput() #clear buffer
ser.write(command) #send prepared command
ser.close()
print("DONE")
def pv_reset_shortcuircuit():
print("Reset Kurzschluss Sicherung:")
ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
command = "\x01\x53\x00\x00\x00\x00\xAE"
global byte3
global byte4
ser.flushInput() #clear buffer
ser.write(command) #send prepared command
ser.close()
print("DONE")
def pv_reset_overcurrent():
print("Reset Ueberlast Sicherung:")
ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
command = "\x01\x52\x00\x00\x00\x00\x7D"
global byte3
global byte4
ser.flushInput() #clear buffer
ser.write(command) #send prepared command
ser.close()
print("DONE")
def pvstatusbit(bit):
if bit == '1':
print("gesetzt :%s" % bit)
else:
print("nicht gesetzt :%s" % bit)
def pvstatus():
# current status of system
ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
command = "\x01\x61\x00\x00\x00\x00\xBD"
global byte3
global byte4
ser.flushInput() #clear buffer
ser.write(command) #send prepared command
skip=ser.read(2) #skip first two bytes
byte3=ser.read(1)
byte4=ser.read(1)
ser.close()
if (
len(byte3) > 0 and len(byte4) > 0
):
byte3=byte3.encode('hex')
bitstring1=BitArray(hex=byte3)
# sys.stdout.write('Inputstring:\t')
# sys.stdout.write(bitstring1.bin)
# sys.stdout.write('\n')
pvfaultstate(bitstring1.bin)
sys.stdout.write('\n')
else :
sys.stdout.write('Voltage communication error!')
def pvfaultstate(bytearray):
global pvfaultdesc
# print("Inputstring Funktion:\t %s" %bytearray)
i=0
arraylen=len(bytearray)
# print (" Array ist %s Elemente lang" %(arraylen))
while i <=arraylen-1:
if bytearray[i] =='1':
print("Fehler aktiv: %s (Byte: %s)" % (pvfaultdesc[i], i) )
#pvstatusbit(bytearray[i])
if i<=arraylen: i=i+1
while True:
try:
now = datetime.now()
os.system('clear')
print(now)
print("aktive Fehler:")
pvstatus()
time.sleep(0.5)
#pv_reset_shortcuircuit()
#time.sleep(0.5)
pv_reset_overcurrent()
time.sleep(0.5)
pv_reset_lowvoltage()
print("aktive Fehler nach reset:")
pvstatus()
print("erneuter reset nach 5 Sekunden")
# sleep 10 seconds before starting over
time.sleep(5)
except KeyboardInterrupt:
print("\n\nkilled via CTRL+C - Bye")
#pvswitch(0) #last ausschalten
sys.exit()