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discrete input

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This commit is contained in:
Wolfgang Hottgenroth
2019-07-07 02:35:40 +02:00
parent 55f875e27e
commit 75ddb6069a
1 changed files with 23 additions and 13 deletions
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36
snippets/test7.py
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@ -40,7 +40,8 @@ class ModbusException(Exception):
return self.msg
class ModbusRequestDefinition(object):
def __init__(self, unit, address, count, converter, label):
def __init__(self, kind, unit, address, count, converter, label):
self.kind = kind
self.unit = unit
self.address = address
self.count = count
@ -53,10 +54,11 @@ reqs = [
# ModbusRequestDefinition(1, 0x2000, 2, 'F', 'Voltage'),
# ModbusRequestDefinition(1, 0x2020, 2, 'F', 'Frequency'),
# ModbusRequestDefinition(1, 0x2060, 2, 'F', 'Current'),
ModbusRequestDefinition(3, 0x0004, 2, 'RF', 'Resistance Channel 1'),
ModbusRequestDefinition(3, 0x000C, 2, 'RF', 'Temperature Channel 1'),
ModbusRequestDefinition(3, 0x0014, 2, 'RF', 'Resistance Channel 2'),
ModbusRequestDefinition(3, 0x001C, 2, 'RF', 'Temperature Channel 2'),
ModbusRequestDefinition('H', 3, 0x0004, 2, 'RF', 'Resistance Channel 1'),
ModbusRequestDefinition('H', 3, 0x000C, 2, 'RF', 'Temperature Channel 1'),
ModbusRequestDefinition('H', 3, 0x0014, 2, 'RF', 'Resistance Channel 2'),
ModbusRequestDefinition('H', 3, 0x001C, 2, 'RF', 'Temperature Channel 2'),
ModbusRequestDefinition('D', 4, 0x0000, 1, '', 'Discrete Input'),
]
@ -75,15 +77,23 @@ while True:
for req in reqs:
try:
time.sleep(delay)
# print("Trying to read: {0} {1} {2}".format(req.address, req.count, req.unit))
result = client.read_holding_registers(address=req.address,
count=req.count,
if req.kind == 'H':
# print("Trying to read: {0} {1} {2}".format(req.address, req.count, req.unit))
result = client.read_holding_registers(address=req.address,
count=req.count,
unit=req.unit)
if type(result) in [ExceptionResponse, ModbusIOException]:
raise ModbusException(result)
print("{0}: {1:.2f}".format(req.label,
dataConverter(req.converter,
result.registers)))
elif req.kind == 'D':
result = client.read_discrete_inputs(address=req.address,
count=req.count,
unit=req.unit)
if type(result) in [ExceptionResponse, ModbusIOException]:
raise ModbusException(result)
print("{0}: {1:.2f}".format(req.label,
dataConverter(req.converter,
result.registers)))
if type(result) in [ExceptionResponse, ModbusIOException]:
raise ModbusException(result)
print("{0}: {1!s}".format(req.label, result.bits))
except ModbusException as e:
print("ERROR when querying '{0}': {1!s}".format(req.label, e))
if client.socket is None: