63 lines
2.4 KiB
Python
63 lines
2.4 KiB
Python
# *****************************************************************************
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc.,
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# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Module authors:
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# Markus Zolliker <markus.zolliker@psi.ch>
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# Leon Zimmermann <leon.zimmermann@psi.ch>
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# *****************************************************************************
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"""Powersupply TDK-Lambda GEN8-400-1P230"""
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from frappy.core import StringIO, Readable, Parameter, FloatRange, Writable, HasIO, BoolType
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class IO(StringIO):
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end_of_line = ('OK\r', '\r')
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default_settings = {'baudrate': 9600}
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class Power(HasIO, Readable):
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value = Parameter(datatype=FloatRange(0,3300,unit='W'))
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def read_value(self):
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reply_volt = self.communicate('MV?')
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reply_current = self.communicate('MC?')
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volt = float(reply_volt)
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current = float(reply_current)
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return volt*current
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class Output(HasIO, Writable):
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value = Parameter(datatype=FloatRange(0,100,unit='%'))
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target = Parameter(datatype=FloatRange(0,100,unit='%'))
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maxvolt = Parameter('voltage at 100%',datatype=FloatRange(0,8,unit='V'),readonly=False)
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maxcurrent = Parameter('current at 100%',datatype=FloatRange(0,400,unit='A'),readonly=False)
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output_enable = Parameter('control on/off', BoolType(), readonly=False)
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def initModule(self):
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super().initModule()
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self.write_output_enable(False)
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def write_target(self, target):
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self.write_output_enable(target != 0)
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self.communicate(f'PV {target*self.maxvolt:.5f}')
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self.communicate(f'PC {target*self.maxcurrent:.5f}')
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self.value = target
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def write_output_enable(self, value):
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self.communicate(f'OUT {int(value)}')
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def shutdown(self):
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self.write_target(0)
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