def transport1():
while True:
tr = False
# 读取出铁口状态
for i in range(8):
db = 576 + i * 4
start_w = 578 + i * 4
start_s = 607 + i
truck_state = plc_r(100, db, 2) # 出铁口状态
truck_state = get_bool(truck_state, 0, 0)
# 铁水接满0-1
if truck_state - tr == -1:
mysql_2 = DatabaseManagement()
weight = get_int(plc_r(100, start_w, 4), 0)
weight = get_int(weight, 0)
steel_scrap_w = get_int(plc_r(100, start_s, 4), 0)
real_w = weight + steel_scrap_w
if weight >= 150:
print('接铁完成')
truck = i + 1
data = mysql_2.query_all(car_Position,
car_Position.truck_num == truck)
car_num = data.car_num
start = 22 + (car_num - 1) * 36
plc_w(start, True)
print(str(car_num) + '号车运走')
news = Plan1(truck, 0, 3, weight, i, car_num)
mysql_2.add_obj(news)
tr = truck_state
def test_read_int(self):
data = self.client.db_read(0, 30, 10)
self.assertEqual(get_int(data, 0), -32768)
self.assertEqual(get_int(data, 2), -1234)
self.assertEqual(get_int(data, 4), 0)
self.assertEqual(get_int(data, 6), 1234)
self.assertEqual(get_int(data, 8), 32767)
def create_data_for_fb(self, _bytearray):
"""
Create data for firebase
:param _bytearray
:return tuple (path, dict)
:raises
TypeError
OverflowError
ValueError
"""
if not isinstance(_bytearray, bytearray):
raise TypeError("A parameter must be bytearray")
if self.__size != len(_bytearray):
raise OverflowError("Bytearray is not correct")
holder = {}
for index, foo in enumerate(self.__template):
data_type = foo['Data_type']
offset = float(foo['Offset'])
row = None
old = None
if data_type == 'Bool':
byte, bit = str(offset).split('.')
byte, bit = int(byte), int(bit)
old = get_bool(self.__datablock, byte, bit)
row = get_bool(_bytearray, byte, bit)
elif data_type == 'String':
offset = int(offset)
old = get_string(self.__datablock, offset, 256)
row = get_string(_bytearray, offset, 256)
elif data_type == 'Int':
offset = int(offset)
old = get_int(self.__datablock, offset)
row = get_int(_bytearray, offset)
elif data_type == 'Real':
offset = int(offset)
old = get_real(self.__datablock, offset)
row = get_real(_bytearray, offset)
else:
raise ValueError("data_type error")
if old == row:
continue
holder[index] = row
self.__datablock = _bytearray
return 'current/datablocks/DB{_num}/data'.format(
_num=self.__datablock_number), holder
def test_set_int_roundtrip(self):
DB1 = (types.wordlen_to_ctypes[types.S7WLByte] * 4)()
for i in range(-(2 ** 15) + 1, (2 ** 15) - 1):
util.set_int(DB1, 0, i)
result = util.get_int(DB1, 0)
self.assertEqual(i, result)
def read_value(data_type, result, byte_index=0, bool_index=0):
# 'FLOAT'
if data_type == 1:
return get_real(result, byte_index)
# 'INT'
elif data_type == 2:
return get_int(result, byte_index)
# 'DINT'
elif data_type == 3:
return get_dint(result, byte_index)
# 'WORD'
elif data_type == 4:
return get_word(result, byte_index)
# 'DWORD'
elif data_type == 5:
return get_dword(result, byte_index)
# 'BYTE'
elif data_type == 6:
return get_byte(result, byte_index)
# 'BOOL'
elif data_type == 7:
return get_bool(result, byte_index, bool_index)
else:
assert ValueError, 'data_type is not useful'
def unpack(array_read, array_order, variables):
buffer = []
j = 0
for loop in range(len(array_order)):
a = array_order[loop][0]
print(a)
start_index = int(math.modf(variables[a]['address'])[1])
i = 0
while i < len(array_order[loop]):
order = array_order[loop][i]
byte_index = int(math.modf(variables[order]['address'])[1])
type = variables[order]['data_type']
if type == 7:
bool_index = round(math.modf(variables[order]['address'])[0] * 10)
buffer.append([get_bool(array_read[loop], byte_index - start_index, bool_index)])
if type == 6:
buffer.append([get_byte(array_read[loop], byte_index - start_index)])
if type == 4:
buffer.append([get_word(array_read[loop], byte_index - start_index)])
if type == 5:
buffer.append([get_dword(array_read[loop], byte_index - start_index)])
if type == 2:
buffer.append([get_int(array_read[loop], byte_index - start_index)])
if type == 3:
buffer.append([get_dint(array_read[loop], byte_index - start_index)])
if type == 1:
buffer.append([get_real(array_read[loop], byte_index - start_index)])
buffer[j].append(order)
j = j + 1
i = i + 2
order1(buffer) # 按最后一列顺序排序
return buffer
def read_Integer(self):
"""
Read Integer type Data from snap7-server
"""
data = self.client.db_read(self.db, self.int_start, self.int_size)
int_list = []
for index in range(0, self.int_size - 1, 2):
int_data = util.get_int(data, index)
int_list.append(int_data)
print("int_list<{}> = {}\n".format(len(int_list), int_list))
def plcRead_tankNum(i):
try:
plc = snap7.client.Client()
plc.connect('192.168.6.1', 0, 1)
start = 66 + i * 2
try:
tank_num = plc.read_area(0x84, 220, start, 2)
tank_num = get_int(tank_num, 0)
return tank_num
except:
print('read tank number error')
except:
print('plc---tank connect error')
def read(self,datatype,*args):
self.plc2pc_data=self.plc.db_read(self.db_number,self.db_read_start,self.db_read_size)
if datatype=='bool':
return util.get_bool(self.plc2pc_data,args[0],args[1])
elif datatype=='int':
return util.get_int(self.plc2pc_data,args[0])
elif datatype==('dint' or 'dword'):
return util.get_dword(self.plc2pc_data,args[0])
elif datatype=='real':
return util.get_real(self.plc2pc_data,args[0])
elif datatype=='string':
return util.get_string(self.plc2pc_data,args[0],args[1])
def set_value(self, byte):
self.valor_anterior = self.valor
if self.type_var == "R":
self.valor = round(util.get_real(byte, self.address),2)
elif self.type_var == "I" or self.type_var == "W":
self.valor = round(util.get_int(byte, self.address),2)
elif self.type_var == "DW" or self.type_var == "DI":
self.valor = round(util.get_dword(byte, self.address),2)
elif self.type_var == "B":
self.valor = util.get_bool(byte, self.address, self.bit)
if self.valor_anterior != self.valor:
self.write = True
else:
self.write = False
def readInt(self, area, dbnumber, start):
try:
#### lock shared resources #####
self.COMsemaphore.acquire(1)
self.connect()
if self.plc is not None and self.plc.get_connected():
retry = self.readRetries
res = None
while True:
try:
with suppress_stdout_stderr():
res = self.plc.read_area(self.areas[area],
dbnumber, start, 2)
except Exception as e:
res = None
if res is None:
if retry > 0:
retry = retry - 1
else:
raise Exception("Communication error")
else:
break
if res is None:
return -1
else:
if self.commError: # we clear the previous error and send a message
self.commError = False
self.adderror(
QApplication.translate("Error Message",
"S7 Communication Resumed",
None))
from snap7.util import get_int
return get_int(res, 0)
else:
self.commError = True
self.adderror(
(QApplication.translate("Error Message", "S7 Error:", None)
+ " connecting to PLC failed"))
return -1
except Exception:
self.adderror(
QApplication.translate("Error Message",
"S7 Communication Error", None))
self.commError = True
return -1
finally:
if self.COMsemaphore.available() < 1:
self.COMsemaphore.release(1)
self.addserial("S7 readInt")
def query(client):
""""""
# db read db, start, size
# attention!!! size is byte
data1 = client.db_read(1, 1, 2)
print(data1)
data_1 = util.get_int(data1, 0)
print(data_1)
data2 = client.db_read(1, 2, 4)
print(data2)
data_2 = util.get_dword(data2, 0)
print(data_2)
data2 = client.db_read(1, 1, 10)
print(data2)
def set_value(self, byte):
self.valor_anterior = self.valor
if self.type_var == "R":
self.valor = util.get_real(byte, self.address)
if self.type_var == "I" or self.type_var == "W":
self.valor = util.get_int(byte, self.address)
if self.type_var == "DW" or self.type_var == "DI":
self.valor = int(util.get_dword(byte, self.address))
# print str(self.db )+"."+str(self.address )+" DI: "+ str(self.valor)
if self.type_var == "B":
#print self.address
value_t = util.get_bool(byte, int(self.address), int(self.bit))
if value_t:
self.valor = 1
else:
self.valor = 0
def readValue(area, db, datatype, offset, size=0):
if area == 'S7AreaDB' and db != 0:
(buf, start) = readDataBlock(db, datatype, offset, size)
elif area == 'S7AreaMK':
(buf, start) = readMarker(datatype, offset, size)
else:
(buf, start) = (b'', 0)
if buf:
if datatype == 'INTEGER':
value = s7util.get_int(buf, start)
elif datatype == 'REAL':
value = s7util.get_real(buf, start)
elif datatype == 'STRING':
value = s7util.get_string(buf, start, size)
elif datatype == 'DATE_TIME':
value = buf[:8]
elif datatype == 'ARRAY OF REAL':
value = []
if len(buf) >= start + (4 * size):
for i in range(0, size):
value.append(s7util.get_real(buf, start + (4 * i)))
else:
# print('setting default value')
if datatype == 'INTEGER':
value = 0
elif datatype == 'REAL':
value = 0.0
elif datatype == 'STRING':
value = ''
elif datatype == 'DATE_TIME':
value = b''
elif datatype == 'ARRAY OF REAL':
value = []
for i in range(0, size):
value.append(0.0)
return value
def read_value(data_type, result, byte_index=0, bool_index=0):
if data_type == 'FLOAT':
return get_real(result, byte_index)
elif data_type == 'INT':
return get_int(result, byte_index)
elif data_type == 'DINT':
return get_dint(result, byte_index)
elif data_type == 'WORD':
return get_word(result, byte_index)
elif data_type == 'BYTE':
return get_byte(result, byte_index)
elif data_type == 'BOOL':
return get_bool(result, byte_index, bool_index)
elif data_type == 'DWORD':
return get_dword(result, byte_index)
else:
assert ValueError, 'data_type is not useful'
def s7_multi_read(plc, tag_type, tag_address, data_type, tag_name):
'''
从s7_read_excel处理完的变量表中批量读取变量
'''
taglens = len(tag_type)
data_items = (S7DataItem * taglens)() # 括号 数组
# fixme 如果只有一个变量的情况 可能会有bug
# 生成 data_items 待读取的变量结构体
for i in range(taglens):
# print(i)
data_items[i].Area = areas[tag_type[i]] # 数据类型
data_items[i].WordLen = ctypes.c_int32(S7WLByte)
data_items[i].Result = ctypes.c_int32(0)
data_items[i].DBNumber = ctypes.c_int32(0) # DB块 非DB写0
data_items[i].Start = ctypes.c_int32(
int(tag_address[i].split('.')[0])) # byte地址
data_items[i].Amount = ctypes.c_int32(8) # 读取8位
for di in data_items:
# create the buffer
buffer = ctypes.create_string_buffer(di.Amount)
# cast the pointer to the buffer to the required type
pBuffer = ctypes.cast(ctypes.pointer(buffer),
ctypes.POINTER(ctypes.c_uint8))
di.pData = pBuffer
# fixme 分批读取 snap7单次20个以上报错 数组切片报错 暂时未使用
def readten(data_items):
"""
:type data_items: object
"""
# print(type(data_items))
# print(type(data_items[10:20]))
# a=plc.read_multi_vars(data_items[10:20])
# print(a)
l = len(data_items) # 变量表长度，如果大于20 必须分批读取 snp7
x = l // 20 # 取整
y = l % 20 # 取余数
a = 0 # 每一组变量的上标
val = [] # 初始化列表 每一组变量值
for n in range(x):
if n < x:
val = val + plc.read_multi_vars(data_items)
a += 1
n += 1
if n == x and y != 0:
val = val + plc.read_multi_vars(data_items)
val2 = val
return val2
result, data_items = plc.read_multi_vars(data_items)
# print('读取的原始数据',data_items)
ttt = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
for di in data_items:
check_error(di.Result)
result_values = []
# function to cast bytes to match data_types[] above
# byte_to_value = [util.get_bool, util.get_real, util.get_int,util.get_dword,util.get_string]
# unpack and test the result of each read
# todo 做一个函数列表，合并循环。逻辑上需要先读取，后get_bool
for i in range(0, len(data_items)):
ddd = data_items[i]
d_bit = int(tag_address[i].split('.')[1])
if data_type[i] == 'Bool':
value = util.get_bool(ddd.pData, 0, d_bit)
elif data_type[i] == 'Real':
value = util.get_real(ddd.pData, d_bit)
elif data_type[i] == 'Int':
value = util.get_int(ddd.pData, d_bit)
elif data_type[i] == 'Dword':
value = util.get_dword(ddd.pData, d_bit)
elif data_type[i] == 'String':
value = util.get_string(ddd.pData, d_bit)
result_values.append(value)
# fixme
# client.disconnect()
# client.destroy()
siemensdata = dict(zip(tag_name, result_values))
# print(siemensdata)
return siemensdata, ttt
def __read(self):
read = self.snap7.read_area(areas['DB'], 105, 0, 16)
return [util.get_int(read, 2), util.get_int(read, 4)]
def s7_multi_read(plc, tag_type, tag_address,data_type,tag_name):
'''
从s7_read_excel处理完的变量表中批量读取变量
'''
# print('s7multiread函数')
# print(tag_type, tag_address)
taglens = len(tag_type)
# print(taglens)
# l = taglens # 变量表长度，如果大于20 必须分批读取 snp7
# x = (l // 20) +1 # 取整加1 组数
# y = l % 20 # 取余数
# dataitemsgroup=[]
# for i in range(x):
# dataitemsgroup.append("data_items"+str(i))
# for i in dataitemsgroup:
# if i < x:
# dataitemsgroup = (S7DataItem * pass)()
# data_items[i].Area = areas[tag_type[i]] # 数据类型
# data_items[i].WordLen = ctypes.c_int32(S7WLByte)
# data_items[i].Result = ctypes.c_int32(0)
# data_items[i].DBNumber = ctypes.c_int32(0) # DB块 非DB写0
# data_items[i].Start = ctypes.c_int32(int(tag_address[i].split('.')[0])) # byte地址
# data_items[i].Amount = ctypes.c_int32(8) # 读取8位
# val = val + plc.read_multi_vars(data_items[20 * a:20 * (a + 1)])
# a += 1
# n += 1
# if n == x and y != 0:
# val = val + plc.read_multi_vars(data_items[20 * a:20 * a + y])
#
# a = 0 # 每一组变量的上标
# val = [] # 初始化列表 每一组变量值
# for n in range(x):
# if n < x:
# val = val + plc.read_multi_vars(data_items[20 * a:20 * (a + 1)])
# a += 1
# n += 1
# if n == x and y != 0:
# val = val + plc.read_multi_vars(data_items[20 * a:20 * a + y])
# val2 = val
# return val2
data_items = (S7DataItem * taglens)() # 括号 数组
# print(type(data_items))
# fixme 如果只有一个变量的情况 可能会有bug
# 生成 data_items 待读取的变量结构体
for i in range(taglens):
# print(i)
data_items[i].Area = areas[tag_type[i]] # 数据类型
data_items[i].WordLen = ctypes.c_int32(S7WLByte)
data_items[i].Result = ctypes.c_int32(0)
data_items[i].DBNumber = ctypes.c_int32(0) # DB块 非DB写0
data_items[i].Start = ctypes.c_int32(int(tag_address[i].split('.')[0])) # byte地址
data_items[i].Amount = ctypes.c_int32(8) # 读取8位
# data_items[i].Bit = tag_address[i].split('.')[1] # 偏移量
# print(type(data_items))
# print(type(data_items[2]))
# print(type(data_items[0:20]))
# create buffers to receive the data
# use the Amount attribute on each item to size the buffer
for di in data_items:
# create the buffer
buffer = ctypes.create_string_buffer(di.Amount)
# cast the pointer to the buffer to the required type
pBuffer = ctypes.cast(ctypes.pointer(buffer),
ctypes.POINTER(ctypes.c_uint8))
di.pData = pBuffer
# di.Bit = di.Bit
# fixme 分批读取 snap7单次20个以上报错
def readten(data_items):
"""
:type data_items: object
"""
# print(type(data_items))
# print(type(data_items[10:20]))
# a=plc.read_multi_vars(data_items[10:20])
# print(a)
l = len(data_items) # 变量表长度，如果大于20 必须分批读取 snp7
x = l // 20 # 取整
y = l % 20 # 取余数
a = 0 # 每一组变量的上标
val = [] # 初始化列表 每一组变量值
for n in range(x):
if n < x:
val = val + plc.read_multi_vars(data_items)
a += 1
n += 1
if n == x and y != 0:
val = val + plc.read_multi_vars(data_items)
val2 = val
return val2
result, data_items = plc.read_multi_vars(data_items)
# print('读取的原始数据',data_items)
ttt = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
# for di in data_items:
# check_error(di.Result)
result_values = []
# function to cast bytes to match data_types[] above
# byte_to_value = [util.get_bool, util.get_real, util.get_int,util.get_dword,util.get_string]
# unpack and test the result of each read
# todo 做一个函数列表，合并循环。逻辑上需要先读取，后get_bool
for i in range(0, len(data_items)):
# btv = byte_to_value[i]
ddd = data_items[i]
# print(ddd)
d_bit = int(tag_address[i].split('.')[1])
# value = btv(di.pData, 0)
if data_type[i] == 'Bool':
value = util.get_bool(ddd.pData, 0, d_bit)
elif data_type[i] == 'Real':
value = util.get_real(ddd.pData, d_bit)
elif data_type[i] == 'Int':
value = util.get_int(ddd.pData, d_bit)
elif data_type[i] == 'Dword':
value = util.get_dword(ddd.pData, d_bit)
elif data_type[i] == 'String':
value = util.get_string(ddd.pData, d_bit)
# assert isinstance(value, object)
result_values.append(value)
# print(result_values)
# todo
# client.disconnect()
# client.destroy()
siemensdata = dict(zip(tag_name, result_values))
print(siemensdata)
return siemensdata, ttt
data_items[i].DBNumber = ctypes.c_int32(int(numero))
data_items[i].Start = ctypes.c_int32(
8 * int(byte) + int(bit)
) # al estar en modo bit es 8 bits * 5 bytes ya que en el DB0.DBX5.0
data_items[i].Amount = ctypes.c_int32(getattr(snap7types, tipo))
for di in data_items:
# create the buffer
buffer = ctypes.create_string_buffer(di.Amount)
# cast the pointer to the buffer to the required type
pBuffer = ctypes.cast(ctypes.pointer(buffer),
ctypes.POINTER(ctypes.c_uint8))
di.pData = pBuffer
result, data_items = plc.read_multi_vars(data_items)
for di in data_items:
check_error(di.Result)
result_values = []
for di in data_items:
if di.WordLen == getattr(snap7types, 'S7WLBit'):
value = util.get_bool(di.pData, 0, 0)
elif di.WordLen == getattr(snap7types, 'S7WLByte'):
value = util.get_int(di.pData, 0)
elif di.WordLen == getattr(snap7types, 'S7WLDWord'):
value = util.get_dword(di.pData, 0)
elif di.WordLen == getattr(snap7types, 'S7WLReal'):
value = util.get_real(di.pData, 0)
result_values.append(value)
print(result_values)
