generated from zhangwei/Train_Identify
278 lines
9.3 KiB
Python
278 lines
9.3 KiB
Python
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import traceback
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import re
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from pylogix import PLC
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class PLC_Tool:
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def __init__(self, plcIp: str, plcSlot: int = 0, timeOut: float = 5):
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self.plcIp = plcIp
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self.plcSlot = plcSlot
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self.timeOut = timeOut
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self.comm = None
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self.comm = PLC(self.plcIp, self.plcSlot, self.timeOut)
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def __del__(self):
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self.comm.Close()
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def __isIP(self, ip: str):
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"""
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判断是否是IP地址
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:param ip:
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:return: bool
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"""
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pattern = r'^((?:25[0-5]|2[0-4]\d|1\d{2}|[1-9]\d|\d)\.){3}(?:25[0-5]|2[0-4]\d|1\d{2}|[1-9]\d|\d)$'
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if re.match(pattern, ip):
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return True
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else:
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return False
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def connect(self):
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self.comm = PLC(self.plcIp, self.plcSlot, self.timeOut)
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def close(self):
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self.comm.Close()
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def batch_write_tag(self, tags: list):
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"""
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Write tags to PLC . 批量写入标签
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:param tags: [("AI.speed", 10.32),("AI.start", 1)]
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:return: [int:(0:失败，1:成功, 2:成功部分), str:异常信息, list: 修改的标签tuple]
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"""
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connect_count: int = 0
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try:
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if self.plcIp is None:
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return 0, "请输入PLC的IP地址", None
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if not self.__isIP(self.plcIp):
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return 0, "PLC的IP地址格式异常", None
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if tags is None:
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return 0, "参数tags未写入需要修改的标签点位", None
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if not isinstance(tags, list):
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return 0, "参数tags应该是一个[{key:value},{key2:value2}]的格式", None
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if len(tags) == 0:
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return 0, "请输入标签tags:list", None
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for tag in tags:
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if not isinstance(tag, tuple):
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return 0, "输入的参数格式不对，请参照：[(\"AI.speed\", 10.32),(\"AI.start\", 1)]", None
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print("需要写入的数据：", tags)
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rets = self.comm.Write(tags)
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hasNone = False
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results = []
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for ret in rets:
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results.append(
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{"tagName": ret.TagName,
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"value": ret.Value,
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"status": ret.Status
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})
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if ret.Status != "Success":
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hasNone = True
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if hasNone:
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return 2, "存在写入失败的标签", results
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else:
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return 1, "", results
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except IOError as io_error:
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if connect_count > 0:
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print(traceback.format_exc())
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return 0, str(io_error), None
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connect_count += 1
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self.connect()
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self.batch_write_tag(tags)
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except Exception as e:
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print(traceback.format_exc())
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return 0, str(e), None
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def write_tag(self, tag: str, value: [str, int, float]):
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"""
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Write tags to PLC . 批量写入标签
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:param tag: [("AI.speed", 10.32),("AI.start", 1)]
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:param value: type is [str|int|float]
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:return: [bool, str:异常信息, list: 修改的标签tuple]
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"""
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connect_count: int = 0
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try:
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if self.plcIp is None:
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return False, "请输入PLC的IP地址"
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if not self.__isIP(self.plcIp):
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return False, "PLC的IP地址格式异常"
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if len(tag) == 0:
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return False, "请输入标签tag:str"
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# if len(value) == 0:
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# return False, "请输入标签'%s'的新值value:str" % tag
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print("需要写入的数据 %s:%s" % (tag, str(value)))
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ret = self.comm.Write(tag, value)
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if ret.Status != "Success":
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return False, "存在写入失败的标签"
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else:
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return True, ""
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except IOError as io_error:
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if connect_count > 0:
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print(traceback.format_exc())
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return False, str(io_error)
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connect_count += 1
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self.connect()
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self.write_tag(tag, value)
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except Exception as e:
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print(traceback.format_exc())
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return False, str(e)
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def write_array(self, tag: str, array: list):
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"""
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写入数组
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:param tag: 标签的名字，例如AI.speed[12]
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:param array:具体数值
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:return: [bool, str:异常信息]
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"""
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connect_count: int = 0
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try:
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if self.plcIp is None:
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return False, "请输入PLC的IP地址"
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if not self.__isIP(self.plcIp):
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return False, "PLC的IP地址格式异常"
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if len(tag) == 0:
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return False, "请输入标签tag:str"
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if len(array) == 0:
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return False, "请输入要写入的参数值"
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ret = self.comm.Write(tag, array)
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# results = [{"tagName": ret.TagName,
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# "value": ret.Value,
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# "status": ret.Status
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# }]
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if ret.Status != "Success":
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return False, "数组信息写入失败"
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return True, ""
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except IOError as io_error:
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if connect_count > 0:
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print(traceback.format_exc())
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return False, str(io_error)
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connect_count += 1
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self.connect()
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self.write_array(tag, array)
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except Exception as e:
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print(traceback.format_exc())
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return False, str(e)
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def get_tags(self, tags: [str, list]):
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"""
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获取标签或者标签列表
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:param tags: 目标标签列表 [str|list]
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:return: [bool, str, list]
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"""
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results = []
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connect_count: int = 0
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try:
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if self.plcIp is None:
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return False, "请输入PLC的IP地址", None
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if not self.__isIP(self.plcIp):
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return False, "PLC的IP地址格式异常", None
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if len(tags) == 0:
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return False, "请输入标签tags:list", None
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rets = self.comm.Read(tags)
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for ret in rets:
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results.append(
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{"tagName": ret.TagName,
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"value": ret.Value,
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"status": ret.Status
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})
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return True, "", results
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except IOError as io_error:
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if connect_count > 0:
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print(traceback.format_exc())
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return False, str(io_error), None
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connect_count += 1
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self.connect()
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self.get_tags(tags)
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print(traceback.format_exc())
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except Exception as e:
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print(traceback.format_exc())
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return False, str(e), None
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def get_array(self, tag: str, count: int = 1):
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"""
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读取数组
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:param tag: 目标标签
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:param count: 读取个数
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:return: [bool, str, (dict, None)]
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"""
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connect_count: int = 0
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try:
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if self.plcIp is None:
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return False, "请输入PLC的IP地址", None
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if not self.__isIP(self.plcIp):
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return False, "PLC的IP地址格式异常", None
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if len(tag) == 0:
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return False, "请输入标签tags:list", None
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if count <= 0:
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return False, "取数个数应大于0", None
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ret = self.comm.Read(tag, count)
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results = {"tagName": ret.TagName,
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"value": ret.Value,
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"status": ret.Status
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}
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return True, "", results
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except IOError as io_error:
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if connect_count > 0:
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print(traceback.format_exc())
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return False, str(io_error), None
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connect_count += 1
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self.connect()
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self.get_array(tag, count)
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except Exception as e:
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print(traceback.format_exc())
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return False, str(e), None
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def get_tag_list(self):
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"""
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获取标签列表
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:return:
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"""
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connect_count: int = 0
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results = []
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try:
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tags = self.comm.GetTagList()
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for t in tags.Value:
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results.append({t.TagName: t.DataType})
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return results
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except IOError as io_error:
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if connect_count > 0:
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print(traceback.format_exc())
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return None
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connect_count += 1
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self.connect()
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self.get_tag_list()
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except Exception as e:
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print(traceback.format_exc())
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return None
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def get_plc_time(self, raw=False):
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"""
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获取PLC时间
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:param raw: 如果设置 raw=True，则将返回原始微秒，否则返回 [datetime] 2021-04-20 15:41:22.964380
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:return:
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"""
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connect_count: int = 0
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try:
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time = self.comm.GetPLCTime(raw)
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return time
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except IOError as io_error:
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if connect_count > 0:
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print(traceback.format_exc())
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return None
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connect_count += 1
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self.connect()
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self.get_plc_time()
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except Exception as e:
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print(traceback.format_exc())
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return None
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# if __name__ == "__main__":
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# plc = PLC_Tool("", 0)
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#
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# success, msg = plc.write_tag("PMCD", 0)
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