45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
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# -*- coding: utf-8 -*-
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"""能源表驱动 —— 电表/水表/气表等能源计量设备参数化适配。
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能源表多支持 Modbus（DL/T 645 网关转 Modbus）或 DL/T 645 串口规约；
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模板化封装与称重驱动一致：默认走 Modbus 参数化实现，
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`mode: dlt645` 时需现场规约文档定制子类。
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"""
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from __future__ import annotations
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from typing import Dict, List, Optional
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from point_dict.loader import Point
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from .base import Driver, SampleValue
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from .modbus_driver import ModbusDriver
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class EnergyDriver(Driver):
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"""能源表只读采集驱动（参数化适配）。"""
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protocol = "energy"
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def __init__(self, config: Optional[dict] = None):
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super().__init__(config)
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self.mode: str = self.config.get("mode", "modbus")
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self._delegate: Optional[Driver] = None
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def connect(self) -> None:
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if self.mode == "modbus":
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self._delegate = ModbusDriver(self.config)
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else:
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raise ConnectionError(
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"能源驱动非 modbus 模式（如 DL/T 645）需要现场规约文档支持，请实现子类"
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)
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self._delegate.connect()
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def read_points(self, points: List[Point]) -> Dict[str, SampleValue]:
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if self._delegate is None:
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raise ConnectionError("能源驱动未连接，请先 connect()")
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return self._delegate.read_points(points)
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def close(self) -> None:
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if self._delegate is not None:
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self._delegate.close()
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self._delegate = None
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