def readM(client,nameStr):
if nameStr[0]=='M' or nameStr[0]=='m':
if nameStr[1]>='0' and nameStr[1]<='9':
addr=int(nameStr.split('.')[0][1:])
bit=int(nameStr.split('.')[1])
if bit>7:
print "M bit out of range"
return
m_data = client.read_area(0x83, 0, addr, 1)
return (struct.unpack('!B', m_data)[0]>>bit)&1
elif nameStr[1]=="B" or nameStr[1]=='b':
addr=int(nameStr[2:])
m_data=client.read_area(0x83, 0, addr, 1)
return struct.unpack('!b', m_data)[0]
elif nameStr[1]=="W" or nameStr[1]=='w':
addr=int(nameStr[2:])
m_data=client.read_area(0x83, 0, addr, 2)
return struct.unpack('!h', m_data)[0]
elif nameStr[1]=="D" or nameStr[1]=='d':
addr=int(nameStr[2:])
m_data=client.read_area(0x83, 0, addr, 4)
return struct.unpack('!i', m_data)[0]
else:
print "input error"
return
def __read_QB(self, client: snap7.client.Client, offset, bitnumber):
v_data = client.read_area(snap7types.S7AreaPA, 0, offset, 1)
s = struct.unpack('!B', v_data)[0]
if (int(struct.unpack('!B', v_data)[0]) & pow(2, bitnumber) != 0):
return 1
else:
return 0
def readM(client, nameStr):
if nameStr[0] == 'M' or nameStr[0] == 'm':
if nameStr[1] >= '0' and nameStr[1] <= '9':
addr = int(nameStr.split('.')[0][1:])
if addr >= 0 and addr <= 31:
bit = int(nameStr.split('.')[1])
if bit > 7:
print "M bit out of range"
return
m_data = client.read_area(0x83, 0, addr, 1)
return (struct.unpack('!B', m_data)[0] >> bit) & 1
else:
print "address out of range"
return
elif nameStr[1] == "B" or nameStr[1] == 'b':
addr = int(nameStr[2:])
if addr >= 0 and addr <= 31:
m_data = client.read_area(0x83, 0, addr, 1)
return struct.unpack('!B', m_data)[0]
else:
print "address out of range"
return
elif nameStr[1] == "W" or nameStr[1] == 'w':
addr = int(nameStr[2:])
if addr >= 0 and addr <= 30:
m_data = client.read_area(0x83, 0, addr, 2)
return struct.unpack('!H', m_data)[0]
else:
print "address out of range"
return
elif nameStr[1] == "D" or nameStr[1] == 'd':
if nameStr[-1] == "F" or nameStr[-1] == "f":
addr = int(nameStr[2:-1])
else:
addr = int(nameStr[2:])
if addr >= 0 and addr <= 28:
m_data = client.read_area(0x83, 0, addr, 4)
if nameStr[-1] == "F" or nameStr[-1] == "f":
return struct.unpack('!f', m_data)[0]
else:
return struct.unpack('!I', m_data)[0]
else:
print "address out of range"
return
else:
print "input error"
return
def __read_VW(self, client: snap7.client.Client, offset):
try:
v_data = client.read_area(snap7types.areas.DB, 1, offset, 2)
data = int.from_bytes(v_data, byteorder='big', signed=False)
return data
#logging.info('read_VW(%s) succeed' % )
except Exception as e:
time.sleep(0.003)
def __read_VB(self, client: snap7.client.Client, offset: int,
bitnumber: int):
v_data = client.read_area(snap7types.areas.DB, 1, offset, 1)
#data = int.from_bytes(v_data,byteorder='big',signed=False)
data = v_data[0] & (1 << bitnumber)
if data > 0:
return 1
else:
return 0
def readV(client, nameStr):
if nameStr[0] == 'V' or nameStr[0] == 'v':
if nameStr[1] >= '0' and nameStr[1] <= '9':
addr = int(nameStr.split('.')[0][1:])
# if addr >=0 and addr<=16359:
bit = int(nameStr.split('.')[1])
if bit > 7:
print "M bit out of range"
return
m_data = client.read_area(0x84, 1, addr, 1)
return (struct.unpack('!B', m_data)[0] >> bit) & 1
# else:
# print "address out of range"
# return
elif nameStr[1] == "B" or nameStr[1] == 'b':
addr = int(nameStr[2:])
m_data = client.read_area(0x84, 1, addr,
1) #area, dbnumber, start, amount
return struct.unpack('!B', m_data)[0]
elif nameStr[1] == "W" or nameStr[1] == 'w':
addr = int(nameStr[2:])
m_data = client.read_area(0x84, 1, addr, 2)
return struct.unpack('!H', m_data)[0]
elif nameStr[1] == "D" or nameStr[1] == 'd':
if nameStr[-1] == "F" or nameStr[-1] == "f":
addr = int(nameStr[2:-1])
else:
addr = int(nameStr[2:])
m_data = client.read_area(0x84, 1, addr, 4)
if nameStr[-1] == "F" or nameStr[-1] == "f":
return struct.unpack('!f', m_data)[0]
else:
return struct.unpack('!I', m_data)[0]
else:
print "input error"
return
def readQ(client,nameStr):
if nameStr[0]=='Q' or nameStr[0]=='q':
if nameStr[1]>='0' and nameStr[1]<='3':
addr=int(nameStr.split('.')[0][1:])
bit=int(nameStr.split('.')[1])
if bit>7:
print "Q bit out of range"
return
m_data = client.read_area(0x82, 0, addr, 1)
return (struct.unpack('!B', m_data)[0]>>bit)&1
else:
print "output out of range"
return
else:
print "input error"
return
def __read_QD(self, client: snap7.client.Client, offset: int):
v_data = client.read_area(snap7types.S7AreaPA, 0, offset, 4)
data = struct.unpack("!f", v_data)[0]
return data
def __read_QW(self, client: snap7.client.Client, offset: int):
v_data = client.read_area(snap7types.S7AreaPA, 1, offset, 2)
data = int.from_bytes(v_data, byteorder='big', signed=False)
return data
def __read_VD(self, client, offset):
v_data = client.read_area(snap7types.areas.DB, 1, offset, 4)
data = struct.unpack("!f", v_data)[0]
return data
def __read_DB_Float(self, client: snap7.client.Client, dbnumber, offset):
v_data = client.read_area(snap7types.S7AreaDB, dbnumber, offset, 4)
data = struct.unpack("!f", v_data)[0]
return data
def __read_DB_Int(self, client, dbnumber, offset):
v_data = client.read_area(snap7types.S7AreaDB, dbnumber, offset, 2)
data = int.from_bytes(v_data, byteorder='big', signed=False)
return data
def __read_I(self, client, dataType, offset, bitnumber=None):
v_data = client.read_area(snap7types.S7AreaPE, 0, offset, 1)
if (int(struct.unpack('!B', v_data)[0]) & pow(2, bitnumber) != 0):
return 1
else:
return 0
