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axpert.py
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axpert.py
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#! /usr/bin/python
# Axpert Inverter control script
# Read values from inverter, sends values to emonCMS,
# read electric low or high tarif from emonCMS and setting charger and mode to hold batteries fully charged
# controls grid charging current to meet circuit braker maximum alloweble grid current(power)
# calculation of CRC is done by XMODEM mode, but in firmware is wierd mistake in POP02 command, so exception of calculation is done in serial_command(command) function
# real PL2303 = big trouble in my setup, cheap chinese converter some times disconnecting, workaround is at the end of serial_command(command) function
# differenc between SBU(POP02) and Solar First (POP01): in state POP01 inverter works only if PV_voltage <> 0 !!! SBU mode works during night
import urllib2
import serial, time, sys, string
import sqlite3
import json
import urllib
import httplib
import datetime
import calendar
import os
import re
import crcmod
#import datetime as dt
from binascii import unhexlify
# Domain you want to post to: localhost would be an emoncms installation on your own laptop
# this could be changed to emoncms.org to post to emoncms.org or your own server
server = "localhost"
# Location of emoncms in your server, the standard setup is to place it in a folder called emoncms
# To post to emoncms.org change this to blank: ""
emoncmspath = "emoncms"
# Write apikey of emoncms account
apikey = "XXXXXXXXXXXXXXXXXXXXXXXXXX"
# Node id youd like the emontx to appear as
nodeid = 0
#Axpert Commands and examples
#QPI # Device protocol ID inquiry
#QID # The device serial number inquiry
#QVFW # Main CPU Firmware version inquiry
#QVFW2 # Another CPU Firmware version inquiry
#QFLAG # Device flag status inquiry
#QPIGS # Device general status parameters inquiry
# GridVoltage, GridFrequency, OutputVoltage, OutputFrequency, OutputApparentPower, OutputActivePower, OutputLoadPercent, BusVoltage, BatteryVoltage, BatteryChargingCurrent, BatteryCapacity, InverterHeatSinkTemperature, PV-InputCurrentForBattery, PV-InputVoltage, BatteryVoltageFromSCC, BatteryDischargeCurrent, DeviceStatus,
#QMOD # Device mode inquiry P: PowerOnMode, S: StandbyMode, L: LineMode, B: BatteryMode, F: FaultMode, H: PowerSavingMode
#QPIWS # Device warning status inquiry: Reserved, InverterFault, BusOver, BusUnder, BusSoftFail, LineFail, OPVShort, InverterVoltageTooLow, InverterVoltageTooHIGH, OverTemperature, FanLocked, BatteryVoltageHigh, BatteryLowAlarm, Reserved, ButteryUnderShutdown, Reserved, OverLoad, EEPROMFault, InverterSoftFail, SelfTestFail, OPDCVoltageOver, BatOpen, CurrentSensorFail, BatteryShort, PowerLimit, PVVoltageHigh, MPPTOverloadFault, MPPTOverloadWarning, BatteryTooLowToCharge, Reserved, Reserved
#QDI # The default setting value information
#QMCHGCR # Enquiry selectable value about max charging current
#QMUCHGCR # Enquiry selectable value about max utility charging current
#QBOOT # Enquiry DSP has bootstrap or not
#QOPM # Enquiry output mode
#QPIRI # Device rating information inquiry - nefunguje
#QPGS0 # Parallel information inquiry
# TheParallelNumber, SerialNumber, WorkMode, FaultCode, GridVoltage, GridFrequency, OutputVoltage, OutputFrequency, OutputAparentPower, OutputActivePower, LoadPercentage, BatteryVoltage, BatteryChargingCurrent, BatteryCapacity, PV-InputVoltage, TotalChargingCurrent, Total-AC-OutputApparentPower, Total-AC-OutputActivePower, Total-AC-OutputPercentage, InverterStatus, OutputMode, ChargerSourcePriority, MaxChargeCurrent, MaxChargerRange, Max-AC-ChargerCurrent, PV-InputCurrentForBattery, BatteryDischargeCurrent
#PEXXX # Setting some status enable
#PDXXX # Setting some status disable
#PF # Setting control parameter to default value
#FXX # Setting device output rating frequency
#POP02 # set to SBU
#POP01 # set to Solar First
#POP00 # Set to UTILITY
#PBCVXX_X # Set battery re-charge voltage
#PBDVXX_X # Set battery re-discharge voltage
#PCP00 # Setting device charger priority: Utility First
#PCP01 # Setting device charger priority: Solar First
#PCP02 # Setting device charger priority: Solar and Utility
#PGRXX # Setting device grid working range
#PBTXX # Setting battery type
#PSDVXX_X # Setting battery cut-off voltage
#PCVVXX_X # Setting battery C.V. charging voltage
#PBFTXX_X # Setting battery float charging voltage
#PPVOCKCX # Setting PV OK condition
#PSPBX # Setting solar power balance
#MCHGC0XX # Setting max charging Current M XX
#MUCHGC002 # Setting utility max charging current 0 02
#MUCHGC010 # Setting utility max charging current 0 10
#MUCHGC020 # Setting utility max charging current 0 20
#MUCHGC030 # Setting utility max charging current 0 30
#POPMMX # Set output mode M 0:single, 1: parrallel, 2: PH1, 3: PH2, 4: PH3
#notworking
#PPCP000 # Setting parallel device charger priority: UtilityFirst - notworking
#PPCP001 # Setting parallel device charger priority: SolarFirst - notworking
#PPCP002 # Setting parallel device charger priority: OnlySolarCharging - notworking
# most of the code is tripped down from the original and extra commands added to upload the maximum amount of data to emoncms.
ser = serial.Serial()
ser.port = "/dev/ttyUSB1"
ser.baudrate = 2400
ser.bytesize = serial.EIGHTBITS #number of bits per bytes
ser.parity = serial.PARITY_NONE #set parity check: no parity
ser.stopbits = serial.STOPBITS_ONE #number of stop bits
ser.xonxoff = False #disable software flow control
ser.timeout = 1 #non-block read
ser.rtscts = False #disable hardware (RTS/CTS) flow control
ser.dsrdtr = False #disable hardware (DSR/DTR) flow control
ser.writeTimeout = 2 #timeout for write
try:
ser.open()
except Exception, e:
print "error open serial port: " + str(e)
exit()
def get_data():
#collect data from axpert inverter
mode = 0
if ser.isOpen():
try:
data = "{"
response = serial_command("QPGS0")
if "NAKss" in response:
time.sleep(2)
return ""
else:
response.rstrip()
nums = response.split(' ', 99)
## Get Inverter Watts from data
data += "Test:" + nums[15]
data += ",INVERTER_Total_VA:" + nums[16]
data += ",INVERTER_Total_W:" + nums[17]
data += ",INVERTER_Total_LOAD:" + nums[18]
data += ",INVERTER_MAX_CHARGE_RANGE:" + nums[23]
data += ",INVERTER_MAX_CHARGE:" + nums[22]
data += ",INVERTER_CHARGER_SOURCE:" + nums[21]
## Log Grid data if inverter is switched to grid mode
if nums[2] == "L":
data += ",Gridmode:1"
data += ",MAINS_WATT:" + nums[9]
else:
data += ",Gridmode:0"
data += ",MAINS_WATT:0"
## Check if Panels is Active or not
if nums[2] == "B":
data += ",Solarmode:1"
else:
data += ",Solarmode:0"
## end of custom code _ Paul
response = serial_command("QPIGS")
if "NAKss" in response:
time.sleep(0.5)
data = ""
return ""
response.rstrip()
nums = response.split(' ', 99)
#Calculations to be sent to Emon
#set time
w = time.strftime("%H.%M")
#Calculations
powerf = float(nums[5])/float(nums[4])
x = float(nums[8])*float(nums[12])
y = float(nums[9])+float(nums[15])
z = float(nums[5])/float(nums[2])
## end of custom code _ Paul
# Data that comes from the Inverter:
data += ",MAINS_V:" + nums[0]
data += ",MAINS_FREQ:" + nums[1]
data += ",INVERTER_VOLTS:" + nums[2]
data += ",INVERTER_FREQ:" + nums[3]
data += ",INVERTER_VA:" + nums[4]
data += ",INVERTER_WATTS:" + nums[5]
data += ",LOAD_PERCENTAGE:" + nums[6]
data += ",DC_BUS_VOLTS:" + nums[7]
data += ",BATTERY_VOLT:" + nums[8]
data += ",BATT_CHARGE_AMPS:" + nums[9]
data += ",BATT_SOC_STATE:" + nums[10]
data += ",HEATSYNC_TEMP:" + nums[11]
data += ",PANEL_AMPS:" + nums[12]
data += ",PANEL_VOLTAGE:" + nums[13]
data += ",SCC_DC_VOLTS:" + nums[14]
data += ",BATT_DISCHARGE_AMPS:" + nums[15]
#data += ",STATUS:" + nums[16]
#Calculated values sent to emon
data += ",24_HOUR_TIME:" + str(w)
data += ",PANEL_WATTS_OLD:" + str(x)
data += ",BATTERY_CURRENT:" + str(y)
data += ",INVERTER_CURRENT:" + str(z)
data += ",INVERTER_POWER_FACTOR:" + str(powerf)
#Blank Values to Emon for custom inputs
data += ",USER_1:0"
data += ",USER_2:0"
data += ",USER_3:0"
data += ",USER_4:0"
data += ",USER_5:0"
## end of custom code _ Paul
#Split Day and Night Use from inverter watts and solar watts
if x > 0 :
data += ",INV_Night_Use:0"
data += ",INV_Day_Use:" + nums[5]
else:
data += ",INV_Night_Use:" + nums[5]
data += ",INV_Day_Use:0"
## end of custom code _ Paul
## New Command for custom Q1 Command _ Paul
response = serial_command("Q1")
if "NAKss" in response:
time.sleep(2)
return ""
else:
response.rstrip()
nums = response.split(' ', 99)
## Get Data
data += ",V_Axpert_Firmware:" + nums[0]
data += ",V_BUS_Firmware:" + nums[1]
data += ",V_PWM_Temp:" + nums[5]
data += ",V_INVERTER_Temp:" + nums[6]
data += ",V_INVERTER_Batt_Temp:" + nums[7]
data += ",V_INVERTER_Transformer_Temp:" + nums[8]
data += ",PANEL_WATTS:" + nums[13]
data += ",V_INVERTER_Charge_Status:" + str(re.findall("\d+", nums[16]))
## New Command for QPIRI Command _ Paul
response = serial_command("QPIRI")
if "NAKss" in response:
time.sleep(2)
return ""
else:
response.rstrip()
nums = response.split(' ', 99)
## Get Data
data += ",xb_Grid_Rating_Volatge:" + nums[0]
data += ",xc_Grid_Rating_Current:" + nums[1]
data += ",xd_Inverter_Rating_Volatge:" + nums[2]
data += ",xe_Inverter_Rating_Freq:" + nums[3]
data += ",xf_Inverter_Rating_Current:" + nums[4]
data += ",xh_Inverter_Rating_VA:" + nums[5]
data += ",xi_Inverter_Rating_W:" + nums[6]
data += ",xj_Inverter_Batt_Rate_V:" + nums[7]
data += ",xk_Inverter_Batt_Recharge_V:" + nums[8]
data += ",xl_Inverter_Batt_Under_V:" + nums[9]
data += ",xm_Inverter_Batt_Bulk_V:" + nums[10]
data += ",xn_Inverter_Batt_Flout_V:" + nums[11]
data += ",xo_Inverter_Batt_Type:" + nums[12]
data += ",xp_Inverter_Grid_Charge:" + nums[13]
data += ",xq_Inverter_Max_Charge:" + nums[14]
data += ",xo_Inverter_Change_Mode:" + nums[15]
data += ",xp_Inverter_Output_Source:" + nums[16]
data += ",xs_Inverter_Charge_Source:" + nums[17]
data += ",xt_Inverter_Type:" + nums[19]
data += ",xv_Inverter_Battery_re_Discharge_v:" + nums[22]
data += ",xx_Inverter_PV_Power_Balance:" + nums[23]
# check for battery type Code did not work and still need to be fine tuned
#if nums[13] == "AGM":
# data += ",x_Inverter_AGM:1"
# data += ",x_Inverter_Flooded:0"
# elif:
# if nums[13] == "Flooded":
# data += ",x_Inverter_Flooded:1"
# data += ",x_Inverter_AGM:0"
except Exception, e:
print "error parsing inverter data...: " + str(e)
return ""
else:
ser.close()
data = ""
print "cannot use serial port ..."
return ""
return data
def send_data(data):
# Send data to emoncms server
try:
conn = httplib.HTTPConnection(server)
conn.request("GET", "/"+emoncmspath+"/input/post.json?&node="+str(nodeid)+"&json="+data+"&apikey="+apikey)
response = conn.getresponse()
conn.close()
except Exception as e:
print "error sending to emoncms...: " + str(e)
return [0]
return [1]
# Run Serial Command
def serial_command(command):
try:
ser.flushInput() #flush input buffer, discarding all its contents
ser.flushOutput() #flush output buffer, aborting current output and discard all that is in buffer
xmodem_crc_func = crcmod.predefined.mkCrcFun('xmodem')
if command == "POP02": # wierd mistake in Axpert firmware - correct CRC is: 0xE2 0x0A
command_crc = '\x50\x4f\x50\x30\x32\xe2\x0b\x0d'
else:
command_crc = command + unhexlify(hex(xmodem_crc_func(command)).replace('0x','',1)) + '\x0d'
ser.write(command_crc)
response = ser.readline()
print command
print response
return response
except Exception, e:
print "error reading inverter...: " + str(e)
ser.close()
time.sleep(20) # Problem with some USB-Serial adapters, they are some times disconnecting, 20 second helps to reconnect at same ttySxx
data = ""
ser.open()
time.sleep(0.5)
return [0]
return [0]
def main():
while True:
time.sleep(0.1)
data = get_data()
## charge_current = set_charge_current ()
if not data == "":
send = send_data(data)
if __name__ == '__main__':
main()