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powerScout.py
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import pywattnodeapi as mdbus
import struct
import logging
import time
class PowerScoutClient(mdbus.SerialModbusClient):
reg_names = [i.strip() for i in """kWh System LSW
kWh System MSW
kW System
kW Demand System Max
kW Demand System Now
kW System Max
kW System Min
kVARh System LSW
kVARh System MSW
kVAR System
kVAh System LSW
kVAh System MSW
kVA System
Displacement PF System
Apparent PF System
Amps System Avg
Volts Line to Line Avg
Volts Line to Neutral Avg
Volts L1 to L2
Volts L2 to L3
Volts L1 to L3
Line Frequency
kWh L1 LSW
kWh L1 MSW
kWh L2 LSW
kWh L2 MSW
kWh L3 LSW
kWh L3 MSW
kW L1
kW L2
kW L3
kVARh L1 LSW
kVARh L1 MSW
kVARh L2 LSW
kVARh L2 MSW
kVARh L3 LSW
kVARh L3 MSW
kVAR L1
kVAR L2
kVAR L3
kVAh L1 LSW
kVAh L1 MSW
kVAh L2 LSW
kVAh L2 MSW
kVAh L3 LSW
kVAh L3 MSW
kVA L1
kVA L2
kVA L3
Displacement PF L1
Displacement PF L2
Displacement PF L3
Apparent PF L1
Apparent PF L2
Apparent PF L3
Amps L1
Amps L2
Amps L3
Volts L1 to Neutral
Volts L2 to Neutral
Volts L3 to Neutral
Time Since Reset LSW
Time Since Reset MSW""".split('\n')]
base_reg = 4000
meters = 6
veris_kW_scalar= [0.001,
0.001,
0.001,
0.001,
0.001,
0.001]
A_scalar = [0.01,
0.1,
0.1,
0.1,
1,
1,
1]
V_scalar = [0.1,
0.1,
0.1,
0.1,
1,
1,
1]
PF_scalar = [0.01,
0.01,
0.01,
0.01,
0.01,
0.01]
kW_scalar = [0.00001,
0.001,
0.1,
1,
10,
100]
V_scalar = [0.1,
0.1,
0.1,
0.1,
1,
1,
1]
def __init__(self,baseAddress=1):
mdbus.SerialModbusClient.__init__(self)
self.baseAddress = baseAddress
def ident(self,meter):
addr = self.baseAddress + meter
idstr = self.doRequest(
mdbus.makeIdent(addr),
mdbus.decodeAscii)
self.log.info ("Meter %d, ident string: %s (rev 0x%02x, act 0x%02x)"%\
(meter, idstr[2:], ord(idstr[0]), ord(idstr[1])))
def setScaling(self,meter,scale):
raise Exception("Warning requires the PS18 reboot!")
addr = self.baseAddress + meter
self.doRequest(
mdbus.makeWriteReg(
addr, 4301, scale))
def _scale(self, data, meter):
for key in data.keys():
if 'kW' in key or 'kVA' in key:
data[key] = PowerScoutClient.kW_scalar[self.scalar[meter]] * data[key]
elif 'PF' in key:
data[key] = PowerScoutClient.PF_scalar[self.scalar[meter]] * data[key]
elif 'Amps' in key:
data[key] = PowerScoutClient.A_scalar[self.scalar[meter]] * data[key]
elif 'Volts' in key:
data[key] = PowerScoutClient.V_scalar[self.scalar[meter]] * data[key]
elif 'Frequency' in key:
data[key] = 0.01 * data[key]
def readAll (self, meter):
addr = self.baseAddress + meter
#print PowerScoutClient.reg_names
#print "reading", len(PowerScoutClient.reg_names), 'starting from', PowerScoutClient.base_reg
data = self.doRequest(
mdbus.makeReadReg(
addr, PowerScoutClient.base_reg, len(PowerScoutClient.reg_names), fnc=3),
mdbus.decodeInt16)
res = {}
for i in range (0, len(PowerScoutClient.reg_names)):
if 'LSW' == PowerScoutClient.reg_names[i][-3:]:
name = PowerScoutClient.reg_names[i][:-4]
if not name in res:
res[name] = 0
res[name] += data[i]
elif 'MSW' == PowerScoutClient.reg_names[i][-3:]:
name = PowerScoutClient.reg_names[i][:-4]
if not name in res:
res[name] = 0
res[name] += (data[i]<<16)
else:
res[PowerScoutClient.reg_names[i]] = data[i]
self._scale(res, meter)
return res
def formatString(self, data):
output = []
cnt = 0
groups = ['L1','L2','L3', 'System']
remain = data.keys()
for group in groups:
cnt = 0
k = data.keys()
k.sort()
for key in k:
if not 'to' in key and group in key:
cnt += 1
output.append ("%27s = %9.3f"%(key,data[key]))
remain.remove(key)
if cnt >= 3:
output.append("\n")
cnt = 0
output.append('\n')
cnt = 0
for key in remain:
cnt += 1
output.append ("%27s = %9.3f"%(key,data[key]))
if cnt >= 3:
output.append("\n")
cnt = 0
return "".join(output)
def open(self, port='/dev/ttyUSB0', baudrate=9600):
mdbus.SerialModbusClient.open(self,port,baudrate)
self.scalar = [1]*6
self.ctValue = [0]*6
for meter in range(0,6):
#self.ident(meter)
#model = self.getModelName(meter)
#mnum = self.getModelNumber(meter)
#self.log.debug("Model name: %s Model number: %s"%(model,mnum))
addr = self.baseAddress + meter
#ensure DENT format
#self.doRequest(
# mdbus.makeWriteReg(
# addr, 4525, 0))
#self.ident(meter)
#self.log ("setScaling to 1")
#self.setScaling(meter, 1)
#self.log.info('addr is %d'%addr)
tmp = self.doRequest(
mdbus.makeReadReg(
addr, 4300, 2, fnc=3), mdbus.decodeInt16)
self.ctValue[meter] = tmp[0]
self.scalar[meter] = tmp[1]
self.log.info("Meter %d using CT: %d and data scalar: %d"%\
(meter, self.ctValue[meter], self.scalar[meter]))
def sync(self, seconds):
self.doRequest(
mdbus.makeWriteReg(
0xff, 128, seconds))
def getModelName(self,meter):
addr = self.baseAddress + meter
return self.doRequest(
mdbus.makeReadReg(
addr, 4200, 5, fnc=3),mdbus.decodeAscii)
def getModelNumber(self,meter):
addr = self.baseAddress + meter
return self.doRequest(
mdbus.makeReadReg(
addr, 4205, 5, fnc=3),mdbus.decodeAscii)
def getPower(self,meter):
"""returns power in watts for each of L1, L2, and L3"""
addr = self.baseAddress + meter
r = []
res = self.doRequest(
mdbus.makeReadReg(
#addr, 4009, 3, fnc=3),mdbus.decodeInt16)
addr, 4028, 3, fnc=3),mdbus.decodeInt16)
return [PowerScoutClient.kW_scalar[self.scalar[meter]]*i for i in res]
def getVerisPower(self,meter):
"""returns power in watts for each of L1, L2, and L3"""
addr = self.baseAddress + meter
r = []
res = self.doRequest(
mdbus.makeReadReg(
#addr, 4009, 3, fnc=3),mdbus.decodeInt16)
addr, 9, 3, fnc=3),mdbus.decodeInt16)
return [1000.0*PowerScoutClient.veris_kW_scalar[self.scalar[meter]]*i for i in res]
def getPf (self,meter):
addr = self.baseAddress + meter
r = []
res = self.doRequest(
mdbus.makeReadReg(
addr, 4049, 3, fnc=3),mdbus.decodeInt16)
return res
def getVolts(self,meter):
addr = self.baseAddress + meter
r = []
res = self.doRequest(
mdbus.makeReadReg(
addr, 4058, 3, fnc=3),mdbus.decodeInt16)
return [PowerScoutClient.V_scalar[self.scalar[meter]]*i for i in res]
def getSystemPower(self,meter):
addr = self.baseAddress + meter
res = self.doRequest(mdbus.makeReadReg(
addr, 4002, 1, fnc=3),mdbus.decodeInt16)[0]
return res
#return 1000.0*PowerScoutClient.kW_scalar[self.scalar[meter]]*\
def getConfig(self,meter):
addr = self.baseAddress + meter
r = []
r.append("Model: %s" % (self.getModelName(meter)))
r.append("Model No: %s"%(self.getModelNumber(meter)))
# r.append("CT Type: %d"% (self.doRequest(
# mdbus.makeReadReg(
# addr, 4524, 1, fnc=3),mdbus.decodeInt16)))
# r.append("Slave ID: %d"% (self.doRequest(
# mdbus.makeReadReg(
# addr, 4525, 1, fnc=3),mdbus.decodeInt16)))
# r.append("CT Phase Shift: %d"% (self.doRequest(
# mdbus.makeReadReg(
# addr, 4598, 1, fnc=3),mdbus.decodeInt16)))
# r.append("Volts Multiplier: %d"% (self.doRequest(
# mdbus.makeReadReg(
# addr, 4603, 1, fnc=3),mdbus.decodeInt16)))
# r.append("Amps Multiplier: %d"% (self.doRequest(
# mdbus.makeReadReg(
# addr, 4604, 1, fnc=3),mdbus.decodeInt16)))
# r.append("Service Type: %d"% (self.doRequest(
# mdbus.makeReadReg(
# addr, 4606, 1, fnc=3),mdbus.decodeInt16)))
# r.append("Set Line Frequency: %d"% (self.doRequest(
# mdbus.makeReadReg(
# addr, 4608, 1, fnc=3),mdbus.decodeInt16)))
#r.append("Data Scale: %d"% (self.doRequest(
# mdbus.makeReadReg(
# addr, 4600, 2, fnc=3),mdbus.decodeInt16)[1]))
return "\n".join(r)
def test():
log = logging.getLogger('modbus')
log.setLevel(logging.INFO)
ch = logging.StreamHandler()
log.addHandler(ch)
log = logging.getLogger('log')
log.addHandler(ch)
port = '/dev/ttyUSB0'
log.info ("Opening '%s'" % (port))
p = PowerScoutClient(0x10);
p.open(port)
#while (True):
#for scale in range (3,4):
log.info(p.getConfig(0))
while True:
totalP = 0
p.sync(1)
buf = []
for meter in range(0,6):
pwr = p.readAll(meter)
print p.formatString(pwr)
buf.append(pwr)
log.info("Total kW: %8.5f"%(sum([i['kW System'] for i in buf])))
time.sleep(1)
log.info('Done.')
exit()
if __name__ == "__main__" : test()