使用Python通过oBIX协议访问Niagara数据的示例

pip install oBIX

from oBIX.common import Point, DataType
from oBIX import Client


if __name__ == '__main__':
  # ip, userName, password
  # 可选项:
  #  port: 端口号，如：8080
  #  https: 是否使用 https，默认：True
  client = Client("127.0.0.1", "oBIX", "oBIX.12345")

  # 点的路径
  point_path = "/config/AHU/temp1/"

  # 读取一个点的值
  point_value = client.read_point_value(point_path)
  print("point value is {0}".format(point_value))

# 点的路径
  point_path = "/config/AHU/temp1/"

  # 读取一个点的值
  point_value = client.read_point_value(point_path)
  print("point value is {0}".format(point_value))

  # 读取一个点实例
  # 然后就能获取到这个点所包含的常用属性
  # 例如：name, val, status, display, href, in1, in2 ... in16, fallback, out
  point_obj = client.read_point(point_path)
  print("name is {0}".format(point_obj.name))
  print("fallback is {0}".format(point_obj.fallback))
  print("in10 is {0}".format(point_obj.in10))
  
  # 也可以使用下面代码直接获取
  point_in10_value = client.read_point_slot(point_path, "in10")
  print("in10 is {0}".format(point_in10_value))

# 点的路径
  point_path = "/config/AHU/temp1/"

  # set 一个点的值
  client.write_point(point_path, 15.2, DataType.real)
  # set point auto
  client.set_point_auto(point_path, DataType.real)
  # override a point
  client.override_point(point_path, 14, DataType.real)
  # emergency override a point
  client.emergency_override_point(point_path, 15, DataType.real)
  # set a point emergency auto
  client.set_point_emergency_auto(point_path, DataType.real)

# 起始时间
  start_time = datetime.now(tz=timezone(timedelta(hours=8))) - timedelta(minutes=10)
  # 结束时间
  end_time = datetime.now(tz=timezone(timedelta(hours=8)))

  # 读取该断时间内的历史数据
  history = client.read_history("Station01", "OutDoorTemp", start_time, end_time)

  # 取起始时间往后指定个数的历史数据
  limit_num = 1
  history = client.read_history("Station01", "OutDoorTemp", start_time=start_time, limit=limit_num)

# 起始时间
  start_time = datetime.now(tz=timezone(timedelta(hours=8))) - timedelta(minutes=10)
  # 结束时间
  end_time = datetime.now(tz=timezone(timedelta(hours=8)))

  # 读取该段时间内的报警数据
  alarms = client.read_alarms("Station01", "OutDoorTemp", start_time, end_time)

  # 取起始时间往后指定个数的报警数据
  limit_num = 1
  alarms = client.read_alarms("Station01", "OutDoorTemp", start_time=start_time, limit=limit_num)

from oBIX.common import Point, DataType
from oBIX import Client


def init_watch():
  global client, point_path
  # 添加监控
  point_path_list = [point_path] # 这里可以是多个点
  result = client.add_watch_points(point_path_list)
  client.watch_changed_handler.on_change += on_watch_changed


# Niagara 里改点的值发生变化时，会自动触发改函数
def on_watch_changed(points: [Point]):
  for point in points:
    val = point.val
    print(f"on_watch_changed: {val}")


if __name__ == '__main__':
  # ip, userName, password
  # 可选项:
  # port: 端口号，如：8080
  # https: 是否使用 https，默认：True
  client = Client("127.0.0.1", "oBIX", "oBIX.12345")
  
  # 点的路径
  point_path = "/config/AHU/temp1/"

  init_watch()
  client.start_watch()
  while True:
    i = 0

# 导出所有点的信息
export_result = client.export_points()

# folder_path [optional]: 想要导出的目录，如： "/config/xxx/"，默认会导出所有点的信息
# export_file_name [optional]: 导出文件的名称，默认： "all_points.json"
# export_type [optional]:
#   0: JSON格式，嵌套格式并保留目录信息
#   1: JSON格式, 只保留点的信息，不保留目录信息
#   2: 字符串列表格式, 只输出点的路径信息

export_result = client.export_points(folder_path="/config/AHU/", export_file_name="output.json", export_type=1)