import socket
import time
from binascii import unhexlify

# 目标服务器地址和端口
TARGET_HOST = 'localhost'  # 请根据实际情况修改
TARGET_PORT = 8888          # 请根据实际情况修改

# 你的注册指令数据
REGISTER_DATA_HEX = "7e80D2DA725711FB7e"

# 你的Modbus指令数据  01034040fb6f6141bd5555bfc82e00bd7d2000c2b0e1063e90c9983c9df308be91110041d9e3753fedf7df44789610c1d60000bf555555c477900041e1058342e1b9874f50
MODBUS_DATA_HEX = "01034040fb6f6141bd5555bfc82e00bd7d2000c2b0e1063e90c9983c9df308be91110041d9e3753fedf7df44789610c1d60000bf555555c477900041e1058342e1b9874f50"

def main():
    # 将十六进制字符串转换为字节
    register_bytes = unhexlify(REGISTER_DATA_HEX)
    modbus_bytes = unhexlify(MODBUS_DATA_HEX)

    try:
        # 创建TCP套接字
        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
            # 设置连接超时
            sock.settimeout(5)
            print(f"正在连接到 {TARGET_HOST}:{TARGET_PORT}...")
            sock.connect((TARGET_HOST, TARGET_PORT))
            print("已连接。")

            # 1. 发送注册包
            print("发送注册包...")
            sock.sendall(register_bytes)
            print("注册包已发送。")

            # 2. 等待0.5秒
            print("等待 0.5 秒...")
            time.sleep(0.5)

            # 3. 发送Modbus数据包
            print("发送Modbus数据包...")
            sock.sendall(modbus_bytes)
            print("Modbus数据包已发送。")

            # （可选）接收最终响应
            try:
                final_response = sock.recv(1024)
                if final_response:
                     print(f"收到最终响应: {final_response.hex()}")
                else:
                     print("收到空的最终响应。")
            except socket.timeout:
                print("等待最终响应超时。")
            # 忽略其他接收错误，直接结束

    except ConnectionRefusedError:
        print(f"错误: 连接被拒绝，请确认服务器在 {TARGET_HOST}:{TARGET_PORT} 上运行。")
    except ValueError as e:
        print(f"错误: 无效的十六进制字符串. {e}")
    except Exception as e:
        print(f"发生错误: {e}")

if __name__ == "__main__":
    main()