bmarechal / datalogger-gui

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instruments/T7Pro.py 3.6 KB
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9af9f93f9   bmarechal   add 4-wire resist... 
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  from abstract_instrument import abstract_instrument
  from labjack import ljm
  import numpy
  
  #==============================================================================
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  ALL_VAL_TYPE = ['RES', 'TEMP PT100 K', 'TEMP PT100 C']
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  ALL_CHANNELS = ['1', '2', '3', '4']
  
  ADRESS = "192.168.0.25"
  CONF_CHANNELS = [["AIN0", "AIN10"], ["AIN2", "AIN11"], ["AIN4", "AIN12"], ["AIN6", "AIN13"]]
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  VISHAY_CHANNELS = [1000., 1000., 1079., 10000.]
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  #==============================================================================
  
  class T7Pro(abstract_instrument):
      def __init__(self, channels, vtypes, adress):
          self.adress = adress
          self.channels = channels
          self.vtypes = vtypes
  
      def model(self):
          return 'T7Pro'
  
      def connect(self):
          print('Connecting to device @%s...' %(self.adress))
          self.handle = ljm.openS("T7", "ETHERNET", self.adress)
          print('  --> Ok')
          print(self.model())
          self.configure()
  
      def configure(self):
          names = ["AIN0_NEGATIVE_CH", "AIN0_RANGE", "AIN0_RESOLUTION_INDEX",
                  "AIN1_NEGATIVE_CH", "AIN1_RANGE", "AIN1_RESOLUTION_INDEX",
                  "AIN2_NEGATIVE_CH", "AIN2_RANGE", "AIN2_RESOLUTION_INDEX",
                  "AIN3_NEGATIVE_CH", "AIN3_RANGE", "AIN3_RESOLUTION_INDEX",
                  "AIN4_NEGATIVE_CH", "AIN4_RANGE", "AIN4_RESOLUTION_INDEX",
                  "AIN5_NEGATIVE_CH", "AIN5_RANGE", "AIN5_RESOLUTION_INDEX",
                  "AIN6_NEGATIVE_CH", "AIN6_RANGE", "AIN6_RESOLUTION_INDEX",
                  "AIN7_NEGATIVE_CH", "AIN7_RANGE", "AIN7_RESOLUTION_INDEX",
                  #"AIN8_NEGATIVE_CH", "AIN8_RANGE", "AIN8_RESOLUTION_INDEX",
                  #"AIN9_NEGATIVE_CH", "AIN9_RANGE", "AIN9_RESOLUTION_INDEX",
                  "AIN10_NEGATIVE_CH", "AIN10_RANGE", "AIN10_RESOLUTION_INDEX",
                  "AIN11_NEGATIVE_CH", "AIN11_RANGE", "AIN11_RESOLUTION_INDEX",
                  "AIN12_NEGATIVE_CH", "AIN12_RANGE", "AIN12_RESOLUTION_INDEX",
                  "AIN13_NEGATIVE_CH", "AIN13_RANGE", "AIN13_RESOLUTION_INDEX"
                  ]
          l_names = len(names)
          aValues = [1, 1, 12,#0
                  199, 1, 12,#1
                  3, 1, 12,#2
                  199, 1, 12,#3
                  5, 1, 12,#4
                  199, 1, 12,#5
                  7, 1, 12,#6
                  199, 1, 12,#7
                  #199, 1, 12,#8
                  #199, 1, 12,#9
                  199, 1, 12,#10
                  199, 1, 12,#11
                  199, 1, 12,#12
                  199, 1, 12#13
                  ]
  
          ljm.eWriteNames(self.handle, l_names, names, aValues)
  
      def getValue(self):
          strMes = ''
          for ch in self.channels:
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              if self.vtypes[self.channels.index(ch)] == 'RES':
                  raw = self.read(CONF_CHANNELS[ALL_CHANNELS.index(ch)])
                  strMes = strMes + str(VISHAY_CHANNELS[ALL_CHANNELS.index(ch)]*raw[0]/raw[1]) + ';'
              elif self.vtypes[self.channels.index(ch)] == 'TEMP PT100 K':
                  raw = self.read(CONF_CHANNELS[ALL_CHANNELS.index(ch)])
                  strMes = strMes + str(((VISHAY_CHANNELS[ALL_CHANNELS.index(ch)]*raw[0]/raw[1])/100.-1)/0.003850+273.15) + ';'
              elif self.vtypes[self.channels.index(ch)] == 'TEMP PT100 C':
                  raw = self.read(CONF_CHANNELS[ALL_CHANNELS.index(ch)])
                  strMes = strMes + str(((VISHAY_CHANNELS[ALL_CHANNELS.index(ch)]*raw[0]/raw[1])/100.-1)/0.003850) + ';'
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          strMes = strMes[0:-1] + '
  '
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          return(strMes)
  
      def read(self, names):
          return ljm.eReadNames(self.handle, len(names), names)
  
      def disconnect(self):
          ljm.close(self.handle)
  
      def send(self, command):
          pass