32 lines
1.2 KiB
Python
32 lines
1.2 KiB
Python
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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 = 5 # 超时时间（秒）
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# 创建TCP socket
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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) # 设置超时，避免一直阻塞
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# 连接设备
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s.connect((IP, PORT))
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print(f"✅ 已通过TCP连接到 {IP}:{PORT}")
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# 尝试接收数据（不发送任何请求，纯等待）
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print("等待设备发送数据...（若5秒内无响应则超时）")
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data = s.recv(1024) # 最多接收1024字节
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if data:
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# 打印收到的原始数据（16进制和字节列表）
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# print(f"收到数据（16进制）：{data.hex()}")
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print(f"收到数据（字节列表）：{list(data)}")
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else:
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print("❌ 未收到任何数据（设备未主动发送）")
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except ConnectionRefusedError:
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print(f"❌ 连接失败：{IP}:{PORT} 拒绝连接（设备离线/端口错误）")
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except socket.timeout:
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print(f"❌ 超时：{TIMEOUT}秒内未收到设备数据（设备未主动发送）")
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except Exception as e:
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print(f"❌ 发生错误：{str(e)}")
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