Volttron `volttron.platform.jsonrpc.RemoteError` when attempting to `get_point`
Im developing a Volttron energy storage control agent and am attempting to perform a seemingly simple read of the battery's "state of energy" with this line
# read current SoE from battery system
result = self.vip.rpc.call(
'platform.driver',
'get_point',
path='devices/STAC/SEDG_BESS',
point_name='SEDGBatteryStateOfEnergy'
).get(timeout=5)
but I am getting the following error:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 335, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 305, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 323, in gevent._gevent_cevent.AsyncResult.get
File "src/gevent/event.py", line 303, in gevent._gevent_cevent.AsyncResult._raise_exception
File "/home/pi/volttron/env/lib/python3.8/site-packages/gevent/_compat.py", line 66, in reraise
raise value
volttron.platform.jsonrpc.RemoteError: builtins.KeyError('devices/STAC/SEDG_BESS')
I have 2 agents (listeneragent-3.3 & platform_driveragent-4.0) running in the main Volttron process:
(volttron) pi@raspberrypi:~/volttron $ vctl status
UUID AGENT IDENTITY TAG STATUS HEALTH
4 DeviceWriteAgentagent-0.1 DeviceWriteAgentagent-0.1_1
a actuatoragent-1.0 platform.actuator
0 listeneragent-3.3 listeneragent-3.3_1 listener running [9856] GOOD
3 platform_driveragent-4.0 platform.driver running [9857] GOOD
d sqlhistorianagent-4.0.0 sqlhistorianagent-4.0.0_1
and Im running my custom ESS controller agent in the VSCode debugger using all the settings specified in the Volttron Dev documention
I know the Platform Driver is running and connected to the ESS because I see it posting periodic scrapes of all the modbus registers to volttron.log. Here you can see one of these scrapes with the devices/STAC/SEDG_BESS device with a point named SEDGBatteryStateOfEnergy:
2022-08-25 11:53:20,237 (listeneragent-3.3 9856) __main__ INFO: Peer: pubsub, Sender: platform.driver:, Bus: , Topic: devices/STAC/SEDG_BESS/all, Headers: {'Date': '2022-08-25T17:53:20.083384+00:00', 'TimeStamp': '2022-08-25T17:53:20.083384+00:00', 'SynchronizedTimeStamp': '2022-08-25T17:53:20.000000+00:00', 'min_compatible_version': '3.0', 'max_compatible_version': ''}, Message:
[{'SEDGACInverterPowerTotal': 3594,
'SEDGACInverterPowerTotal_SF': 0,
'SEDGACMeterPowerTotal': 3591,
'SEDGACMeterPowerTotal_SF': 0,
'SEDGBatteryStateOfEnergy': 31.998273849487305,
'SEDGDCBatteryPower': 0.0,
'SEDGDCInverterPowerTotal': 3648,
'SEDGDCInverterPowerTotal_SF': 0,
'SEDGRemote_Control_Charge_Limit': 6600.0,
'SEDGRemote_Control_Command_Discharge_Limit': 6600.0,
'SEDGRemote_Control_Command_Mode': 1,
'SEDGRemote_Control_Command_Timeout': 3600,
'SEDGStorage_AC_Charge_Limit': 6600.0,
'SEDGStorage_AC_Charge_Policy': 1,
'SEDGStorage_Backup_Reserved_Setting': 10.0,
'SEDGStorage_Charge-Discharge_Default_Mode': 1,
'SEDGStorage_Control_Mode': 4,
'SEDGWrite_Remote_Control_Charge_Limit': 6600.0,
'SEDGWrite_Remote_Control_Command_Discharge_Limit': 6600.0,
'SEDGWrite_Remote_Control_Command_Mode': 1,
'SEDGWrite_Remote_Control_Command_Timeout': 3600,
'SEDGWrite_Storage_AC_Charge_Limit': 6600.0,
'SEDGWrite_Storage_AC_Charge_Policy': 1,
'SEDGWrite_Storage_Backup_Reserved_Setting': 10.0,
'SEDGWrite_Storage_Charge-Discharge_Default_Mode': 1,
'SEDGWrite_Storage_Control_Mode': 4},
{'SEDGACInverterPowerTotal': {'type': 'integer',
'tz': 'UTC',
'units': 'Watts'},
'SEDGACInverterPowerTotal_SF': {'type': 'integer', 'tz': 'UTC', 'units': ''},
'SEDGACMeterPowerTotal': {'type': 'integer', 'tz': 'UTC', 'units': 'Watts'},
'SEDGACMeterPowerTotal_SF': {'type': 'integer', 'tz': 'UTC', 'units': ''},
'SEDGBatteryStateOfEnergy': {'type': 'integer', 'tz': 'UTC', 'units': '%'},
'SEDGDCBatteryPower': {'type': 'integer', 'tz': 'UTC', 'units': 'Watts'},
'SEDGDCInverterPowerTotal': {'type': 'integer',
'tz': 'UTC',
'units': 'Watts'},
'SEDGDCInverterPowerTotal_SF': {'type': 'integer', 'tz': 'UTC', 'units': ''},
'SEDGRemote_Control_Charge_Limit': {'type': 'integer',
'tz': 'UTC',
'units': 'Watts'},
'SEDGRemote_Control_Command_Discharge_Limit': {'type': 'integer',
'tz': 'UTC',
'units': 'Watts'},
'SEDGRemote_Control_Command_Mode': {'type': 'integer',
'tz': 'UTC',
'units': ''},
'SEDGRemote_Control_Command_Timeout': {'type': 'integer',
'tz': 'UTC',
'units': 'Sec '},
'SEDGStorage_AC_Charge_Limit': {'type': 'integer',
'tz': 'UTC',
'units': 'KW or % '},
'SEDGStorage_AC_Charge_Policy': {'type': 'integer', 'tz': 'UTC', 'units': ''},
'SEDGStorage_Backup_Reserved_Setting': {'type': 'integer',
'tz': 'UTC',
'units': '% '},
'SEDGStorage_Charge-Discharge_Default_Mode': {'type': 'integer',
'tz': 'UTC',
'units': ''},
'SEDGStorage_Control_Mode': {'type': 'integer', 'tz': 'UTC', 'units': ''},
'SEDGWrite_Remote_Control_Charge_Limit': {'type': 'integer',
'tz': 'UTC',
'units': 'Watts'},
'SEDGWrite_Remote_Control_Command_Discharge_Limit': {'type': 'integer',
'tz': 'UTC',
'units': 'Watts'},
'SEDGWrite_Remote_Control_Command_Mode': {'type': 'integer',
'tz': 'UTC',
'units': ''},
'SEDGWrite_Remote_Control_Command_Timeout': {'type': 'integer',
'tz': 'UTC',
'units': 'Sec'},
'SEDGWrite_Storage_AC_Charge_Limit': {'type': 'integer',
'tz': 'UTC',
'units': 'KW or % '},
'SEDGWrite_Storage_AC_Charge_Policy': {'type': 'integer',
'tz': 'UTC',
'units': ''},
'SEDGWrite_Storage_Backup_Reserved_Setting': {'type': 'integer',
'tz': 'UTC',
'units': '% '},
'SEDGWrite_Storage_Charge-Discharge_Default_Mode': {'type': 'integer',
'tz': 'UTC',
'units': ''},
'SEDGWrite_Storage_Control_Mode': {'type': 'integer',
'tz': 'UTC',
'units': ''}}]
Here's the output of vctl config list platform.driver:
(volttron) pi@raspberrypi:~/volttron $ vctl config list platform.driver
config
devices/STAC/SEDG_BESS
registry_configs/SEDG_tk
registry_configs/SEDG_tk_map
Any idea what might be happening here? I've tried shutting Volttron down and restarting , but it has not seemed to help.
Thanks!
Solution
Changing the device path from
'devices/STAC/SEDG_BESS'
to
'STAC/SEDG_BESS'
did the trick!
This is a bit confusing as I was referencing this documentation for get_point which shows the "devices/" prefix on the path parameter:
- count the elements in a list
- How to solve: ValueError: Invalid format specifier?
- How to generate an MD5 checksum of a file?
- What is the point for asyncio synchronization primitives not to be thread safe?
- How to increase a counter in SQLAlchemy
- How update/remove conda-forge channel from Anaconda?
- Editing specific labels in stacked bar chart with matplotlib
- Strange results with huggingface transformer[marianmt] translation of larger text
- Appending column values from one dataframe to another as a list
- Intersection 3D meshes python
- extract variables from list and run a loop
- Overlay polygon on top of image in Python
- bit-wise operation unary ~ (invert)
- Variable table name in sqlite
- SQL SELECT from table name supplied by a variable
- How do I detect collision in pygame?
- Can you override the default formatter for f-strings?
- Streaming function in Microsoft Autogen
- Importing dynamically all modules from a folder
- Is it possible to type annotate Python function parameter used as TypedDict key to make mypy happy?
- Using VirtualEnv with multiple Python versions on windows
- How to pickle or store Jupyter (IPython) notebook session for later
- Why does a Pygame display with the pygame.FULLSCREEN flag affect other windows?
- color discrete sequence in a plotly graph objects
- How to specify dependencies for the entire router?
- What is the easiest way to share a python environment?
- docker streamlink opens a stream but immediately closes it
- How to attach a Scrollbar to a Text widget?
- Getting today's date in YYYY-MM-DD in Python?
- Get the current git hash in a Python script