Implementing a device guide issue

1

Hi,

I am trying to follow the procedure described in implement a device online guide from openEMS website:

Implementing a device :: Open Energy Management System (openems.github.io)

At step 1.6 Enable the Component when I clicked on Resolve to update the list of bundles that are required to run OpenEMS Edge although
bnd.identity;id=‘io.openems.edge.meter.simulated’ appeared I had to add manually
io.openems.edge.meter.simulated;version=’[1.0.0,1.0.1)’,\

Note: On Resolution Results there is no finish but rather update.

Now on step 1.7 Run the implementation I ran OSGi and from Apache Felix Web Console I set the corresponding settings to the Apache Felix Web Console but there is no Meter Simulated subsection. For this purpose I randomly chose Meter Weidmueller 525. The results from Eclipse IDE console are shown below:

2022-03-03T11:08:49,255 [re.Cycle] WARN [ms.edge.core.cycle.CycleWorker] [_cycle] Error in Controller [ctrlBalancing0]: Value for Channel [meter0/ActivePower] is invalid.

2022-03-03T11:08:49,255 [Worker-0] WARN [socket.AbstractWebsocketClient] Unable to send JSON-RPC message. WebsocketNotConnectedException: {“jsonrpc”:“2.0”,“method”:“timestampedData”,“params”:{}}

2022-03-03T11:08:49,255 [Backend0] INFO [socket.ClientReconnectorWorker] [ctrlBackend0] Waiting till next WebSocket reconnect [32s]

2022-03-03T11:08:49,255 [re.Cycle] INFO [ntroller.debuglog.DebugLogImpl] [ctrlDebugLog0] _sum[State:Fault Ess SoC:49 %|L:0 W Grid:1156 W Consumption:1156 W] ctrlBackend0[State:WARNING: UnableToSend] ctrlBalancing0[State:FAULT: Running the Controller failed] ess0[SoC:49 %|L:0 W] meter0[L:UNDEFINED|State:FAULT: Modbus Communication failed] meter0[1156 W]

2022-03-03T11:08:50,217 [modbus0 ] WARN [bridge.modbus.api.ModbusWorker] [modbus0] FC3ReadHoldingRegisters [meter0;unitid=1;ref=19000/0x4a38;length=122] execution failed: Transaction failed: Illegal Data Address: Illegal Data Address

2022-03-03T11:08:50,264 [re.Cycle]

Could you please help me debug the project and solve the modbus communication issue with the virtual smart meter?

For any further clarification feel free to contact me here.

2

Hi,

Thanks for reporting the errors and getting in touch!

I just went through the Implementing a Device tutorial once again and indeed found some small problems. At first I had the same problem while Resolving the EdgeApp.bndrun. It was solved by saving the file after Drag&Drop and before starting the resolve process. Afterwards everything else worked properly.

I added my updates to the tutorial in this commit - hope it helps:

Regards,
Stefan

3

Hello

I followed the updated tutorial (saving the file after Drag&Drop and before starting the resolve process) as well as I deleted the io.openems.edge.meter.simulated folder inside the test folder. However, I get the output below:

[re.Cycle] INFO [ntroller.debuglog.DebugLogImpl] [ctrlDebugLog0] _sum[State:Fault Ess SoC:50 %|L:0 W Grid:1601 W Consumption:1601 W] ctrlBackend0[State:WARNING: UnableToSend] ctrlBalancing0[State:FAULT: Running the Controller failed] ess0[SoC:50 %|L:0 W] meter0[L:UNDEFINED|State:FAULT: Modbus Communication failed] meter0[1601 W]

instead of:

[re.Cycle] INFO [ntroller.debuglog.DebugLogImpl] [ctrlDebugLog0] _sum[State:Ok Production:500 W Consumption:500 W] meter0[L:500 W]

Also, there is a note on the tutorial:

The Modbus-TCP Slave -Server opens on the non-standard port 8502 . The default standardized port for Modbus-TCP is 502 , but we chose 8502 here, because if you run this example on a Linux system it will not allow you to occupy ports below 1024 .

However I see this output on the Eclipse IDE console log:

Modbus-Slave Simulator started. Port [502] Unit-ID [1]

(502 instead of 8502)

In the end of this guide, you will see a production of ‘500 W’ - where ‘500’ comes from register address 1000.

However, I could not see ‘500W’

Kind Regards

4

[re.Cycle] INFO [ntroller.debuglog.DebugLogImpl] [ctrlDebugLog0] _sum[State:Warning Ess SoC:48 %|L:7831 W Grid:-6179 W Production:500 W Consumption:2152 W] ctrlBackend0[State:WARNING: UnableToSend] ess0[SoC:48 %|L:7831 W] meter0[L:500 W] meter0[-6179 W]

Ignore the previous email.

Now I have State:Warning Ess and Production is 500 W, meter0 [L:500W] however Consumption is 2152 W (instead of 500W).

On the tutorial:

[re.Cycle] INFO [ntroller.debuglog.DebugLogImpl] [ctrlDebugLog0] _sum[State:Ok Production:500 W Consumption:500 W] meter0[L:500 W]

How can I fix this?

Kind Regards