48 lines
1.9 KiB
Python
48 lines
1.9 KiB
Python
import socket
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# 设备信息
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IP = "192.168.250.63"
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PORT = 502
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TIMEOUT = 10 # 超时时间（秒）
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def parse_weight(raw_data):
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"""解析原始数据，提取重量（如从 b'ST,NT, +0000175\r\n' 中提取 175）"""
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try:
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# 1. 字节串解码为字符串（去除 b'' 包裹）
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data_str = raw_data.decode('utf-8').strip() # strip() 去除首尾的换行符\r\n和空格
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# 此时 data_str 应为 'ST,NT, +0000175'
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# 2. 按逗号分割字符串，取第三个字段（包含重量的部分）
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parts = data_str.split(',') # 分割后为 ['ST', 'NT', '+0000175']
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weight_part = parts[2].strip() # 得到 '+0000175'
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# 3. 提取纯数字（去除可能的正负号和前导零）
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# 方法：替换掉非数字字符，再转换为整数
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weight_num = int(''.join(filter(str.isdigit, weight_part)))
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return weight_num
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except (IndexError, ValueError, UnicodeDecodeError) as e:
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print(f"解析失败：{e}，原始数据：{raw_data}")
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return None
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# 创建TCP连接并持续读取
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with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
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try:
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s.settimeout(TIMEOUT)
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s.connect((IP, PORT))
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print(f"✅ 已连接到 {IP}:{PORT}，开始持续读取重量...\n")
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while True: # 循环读取
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data = s.recv(1024) # 接收数据
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if data:
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print(f"原始数据：{data}")
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weight = parse_weight(data)
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if weight is not None:
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print(f"解析出重量：{weight}\n")
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else:
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print("❌ 未收到数据，等待下一次...\n")
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except ConnectionRefusedError:
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print(f"❌ 连接失败：{IP}:{PORT} 拒绝连接")
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except socket.timeout:
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print(f"❌ 超时：{TIMEOUT}秒内未收到数据")
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except Exception as e:
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print(f"❌ 发生错误：{e}") |