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kaklik |
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#!/usr/bin/env python |
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import minimalmodbus |
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import time |
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instrument = minimalmodbus.Instrument('/dev/ttyUSB0', 1) # port name, slave address (in decimal) |
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instrument.serial.port # this is the serial port name |
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instrument.serial.baudrate = 9600 # Baud |
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instrument.serial.bytesize = 8 |
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instrument.serial.stopbits = 2 |
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instrument.serial.timeout = 0.5 # seconds |
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instrument.address = 0x1E # this is the slave address number |
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instrument.mode = minimalmodbus.MODE_RTU # rtu or ascii mode |
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instrument.write_register(0x01, 0x1F, 0) # Registernumber, value, number of decimals for storage |
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time.sleep(0.5) |
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## Read temperature (PV = ProcessValue) ## |
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temperature = instrument.read_float(0x53, 3, 2) # Registernumber, number of decimals |
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print temperature |
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conductivity = instrument.read_float(0x55, 3, 2) # Registernumber, number of decimals |
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print conductivity |
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salinity = instrument.read_float(0x57, 3, 2) # Registernumber, number of decimals |
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print salinity |
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tds_kcl = instrument.read_float(0x59, 3, 2) # Registernumber, number of decimals |
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print tds_kcl |
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## Change temperature setpoint (SP) ## |
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