CCA-TAP Message frequency?

[SebStaeubert]

How often are the values from the Tigo TS4-A-O usually sent to the CCA via TAP?

In my setup, it looks as if the values arrive randomly, with some nodes not sending updates for several minutes.

{"gateway":{"id":4609},"node":{"id":8},"timestamp":"2025-04-21T14:49:28.128290526+02:00","voltage_in":29.85,"voltage_out":29.5,"current":4.01,"dc_dc_duty_cycle":1.0,"temperature":35.0,"rssi":193}
{"gateway":{"id":4609},"node":{"id":8},"timestamp":"2025-04-21T14:49:30.128290526+02:00","voltage_in":30.5,"voltage_out":30.2,"current":3.855,"dc_dc_duty_cycle":1.0,"temperature":35.0,"rssi":193}
{"gateway":{"id":4609},"node":{"id":13},"timestamp":"2025-04-21T14:49:40.125739166+02:00","voltage_in":29.9,"voltage_out":29.6,"current":3.995,"dc_dc_duty_cycle":1.0,"temperature":34.0,"rssi":172}
{"gateway":{"id":4609},"node":{"id":13},"timestamp":"2025-04-21T14:49:42.130964600+02:00","voltage_in":30.3,"voltage_out":30.0,"current":3.91,"dc_dc_duty_cycle":1.0,"temperature":34.0,"rssi":172}
{"gateway":{"id":4609},"node":{"id":8},"timestamp":"2025-04-21T14:49:40.125739166+02:00","voltage_in":29.95,"voltage_out":29.6,"current":4.0,"dc_dc_duty_cycle":1.0,"temperature":35.0,"rssi":193}
{"gateway":{"id":4609},"node":{"id":8},"timestamp":"2025-04-21T14:49:42.130964600+02:00","voltage_in":30.35,"voltage_out":30.0,"current":3.915,"dc_dc_duty_cycle":1.0,"temperature":35.0,"rssi":193}
{"gateway":{"id":4609},"node":{"id":15},"timestamp":"2025-04-21T14:49:56.141524227+02:00","voltage_in":30.0,"voltage_out":29.7,"current":4.005,"dc_dc_duty_cycle":1.0,"temperature":33.0,"rssi":102}
{"gateway":{"id":4609},"node":{"id":15},"timestamp":"2025-04-21T14:49:58.140694458+02:00","voltage_in":30.15,"voltage_out":29.9,"current":3.98,"dc_dc_duty_cycle":1.0,"temperature":33.0,"rssi":102}
{"gateway":{"id":4609},"node":{"id":6},"timestamp":"2025-04-21T14:49:56.141524227+02:00","voltage_in":30.1,"voltage_out":29.8,"current":3.995,"dc_dc_duty_cycle":1.0,"temperature":33.0,"rssi":93}
{"gateway":{"id":4609},"node":{"id":6},"timestamp":"2025-04-21T14:49:58.140694458+02:00","voltage_in":30.2,"voltage_out":29.9,"current":3.975,"dc_dc_duty_cycle":1.0,"temperature":33.0,"rssi":93}
{"gateway":{"id":4609},"node":{"id":5},"timestamp":"2025-04-21T14:50:12.133405055+02:00","voltage_in":29.7,"voltage_out":29.4,"current":4.11,"dc_dc_duty_cycle":1.0,"temperature":36.0,"rssi":116}
{"gateway":{"id":4609},"node":{"id":5},"timestamp":"2025-04-21T14:50:14.133405055+02:00","voltage_in":29.65,"voltage_out":29.3,"current":4.1,"dc_dc_duty_cycle":1.0,"temperature":36.0,"rssi":116}
{"gateway":{"id":4609},"node":{"id":13},"timestamp":"2025-04-21T14:50:44.130834610+02:00","voltage_in":29.2,"voltage_out":28.9,"current":4.005,"dc_dc_duty_cycle":1.0,"temperature":33.0,"rssi":172}
{"gateway":{"id":4609},"node":{"id":13},"timestamp":"2025-04-21T14:50:46.130834610+02:00","voltage_in":28.9,"voltage_out":28.6,"current":4.04,"dc_dc_duty_cycle":1.0,"temperature":33.0,"rssi":172}
{"gateway":{"id":4609},"node":{"id":11},"timestamp":"2025-04-21T14:50:44.130834610+02:00","voltage_in":29.4,"voltage_out":29.1,"current":4.03,"dc_dc_duty_cycle":1.0,"temperature":36.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":11},"timestamp":"2025-04-21T14:50:46.130834610+02:00","voltage_in":29.15,"voltage_out":28.8,"current":4.06,"dc_dc_duty_cycle":1.0,"temperature":36.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":7},"timestamp":"2025-04-21T14:51:04.143841335+02:00","voltage_in":28.3,"voltage_out":26.8,"current":4.09,"dc_dc_duty_cycle":0.9725490196078431,"temperature":35.0,"rssi":67}
{"gateway":{"id":4609},"node":{"id":7},"timestamp":"2025-04-21T14:51:06.143841335+02:00","voltage_in":28.45,"voltage_out":26.9,"current":4.08,"dc_dc_duty_cycle":0.9686274509803922,"temperature":35.0,"rssi":67}
{"gateway":{"id":4609},"node":{"id":6},"timestamp":"2025-04-21T14:51:28.132006145+02:00","voltage_in":28.0,"voltage_out":27.7,"current":4.155,"dc_dc_duty_cycle":1.0,"temperature":34.0,"rssi":93}
{"gateway":{"id":4609},"node":{"id":6},"timestamp":"2025-04-21T14:51:30.132006145+02:00","voltage_in":28.35,"voltage_out":28.0,"current":4.14,"dc_dc_duty_cycle":1.0,"temperature":34.0,"rssi":93}
{"gateway":{"id":4609},"node":{"id":4},"timestamp":"2025-04-21T14:52:00.131661115+02:00","voltage_in":29.8,"voltage_out":28.5,"current":4.04,"dc_dc_duty_cycle":0.984313725490196,"temperature":31.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":4},"timestamp":"2025-04-21T14:52:02.146626794+02:00","voltage_in":29.75,"voltage_out":28.5,"current":4.06,"dc_dc_duty_cycle":0.9882352941176471,"temperature":31.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":14},"timestamp":"2025-04-21T14:52:00.131661115+02:00","voltage_in":29.6,"voltage_out":28.2,"current":4.0,"dc_dc_duty_cycle":0.9764705882352941,"temperature":33.0,"rssi":131}
{"gateway":{"id":4609},"node":{"id":14},"timestamp":"2025-04-21T14:52:02.146626794+02:00","voltage_in":29.5,"voltage_out":28.2,"current":4.02,"dc_dc_duty_cycle":0.9803921568627451,"temperature":33.0,"rssi":131}
{"gateway":{"id":4609},"node":{"id":11},"timestamp":"2025-04-21T14:53:40.134183944+02:00","voltage_in":30.2,"voltage_out":29.8,"current":7.335,"dc_dc_duty_cycle":1.0,"temperature":36.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":11},"timestamp":"2025-04-21T14:53:42.143686287+02:00","voltage_in":30.1,"voltage_out":29.7,"current":7.51,"dc_dc_duty_cycle":1.0,"temperature":36.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":8},"timestamp":"2025-04-21T14:53:52.131866837+02:00","voltage_in":29.95,"voltage_out":29.6,"current":8.03,"dc_dc_duty_cycle":1.0,"temperature":35.0,"rssi":193}
{"gateway":{"id":4609},"node":{"id":8},"timestamp":"2025-04-21T14:53:54.131866837+02:00","voltage_in":29.65,"voltage_out":28.8,"current":8.025,"dc_dc_duty_cycle":0.996078431372549,"temperature":35.0,"rssi":193}
{"gateway":{"id":4609},"node":{"id":8},"timestamp":"2025-04-21T14:54:00.072057445+02:00","voltage_in":29.8,"voltage_out":28.7,"current":7.995,"dc_dc_duty_cycle":0.9882352941176471,"temperature":35.0,"rssi":193}
{"gateway":{"id":4609},"node":{"id":8},"timestamp":"2025-04-21T14:54:02.145301632+02:00","voltage_in":29.9,"voltage_out":28.7,"current":7.93,"dc_dc_duty_cycle":0.9882352941176471,"temperature":35.0,"rssi":193}
{"gateway":{"id":4609},"node":{"id":4},"timestamp":"2025-04-21T14:54:40.146966287+02:00","voltage_in":28.95,"voltage_out":27.9,"current":6.715,"dc_dc_duty_cycle":0.9921568627450981,"temperature":32.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":4},"timestamp":"2025-04-21T14:54:42.147187912+02:00","voltage_in":28.75,"voltage_out":27.8,"current":6.64,"dc_dc_duty_cycle":0.996078431372549,"temperature":32.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":4},"timestamp":"2025-04-21T14:54:52.132693591+02:00","voltage_in":28.5,"voltage_out":27.6,"current":5.805,"dc_dc_duty_cycle":0.996078431372549,"temperature":33.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":4},"timestamp":"2025-04-21T14:54:54.132693591+02:00","voltage_in":29.0,"voltage_out":28.0,"current":5.62,"dc_dc_duty_cycle":0.9921568627450981,"temperature":33.0,"rssi":111}
{"gateway":{"id":4609},"node":{"id":9},"timestamp":"2025-04-21T14:54:56.132693591+02:00","voltage_in":28.8,"voltage_out":27.9,"current":5.535,"dc_dc_duty_cycle":0.9921568627450981,"temperature":33.0,"rssi":116}
{"gateway":{"id":4609},"node":{"id":9},"timestamp":"2025-04-21T14:54:58.144962847+02:00","voltage_in":28.9,"voltage_out":27.9,"current":5.41,"dc_dc_duty_cycle":0.9882352941176471,"temperature":33.0,"rssi":116}
{"gateway":{"id":4609},"node":{"id":17},"timestamp":"2025-04-21T14:55:08.149387955+02:00","voltage_in":29.05,"voltage_out":27.9,"current":5.61,"dc_dc_duty_cycle":0.9882352941176471,"temperature":29.3,"rssi":63}
{"gateway":{"id":4609},"node":{"id":17},"timestamp":"2025-04-21T14:55:10.149387955+02:00","voltage_in":29.2,"voltage_out":27.8,"current":5.66,"dc_dc_duty_cycle":0.9803921568627451,"temperature":29.3,"rssi":63}
{"gateway":{"id":4609},"node":{"id":9},"timestamp":"2025-04-21T14:55:08.149387955+02:00","voltage_in":29.1,"voltage_out":28.0,"current":5.635,"dc_dc_duty_cycle":0.9882352941176471,"temperature":35.0,"rssi":116}
{"gateway":{"id":4609},"node":{"id":9},"timestamp":"2025-04-21T14:55:10.149387955+02:00","voltage_in":28.8,"voltage_out":27.8,"current":5.74,"dc_dc_duty_cycle":0.9882352941176471,"temperature":35.0,"rssi":116}

When I send these results with taptap-mqtt and record them in openHAB, for example, you get the following graph.

What could be the cause of this? Is the cable between the CCA and TAP too long (approx. 20 m in my case)? Is the COM port not working properly or incorrectly configured (I am using an RS485 USB stick on the Raspberry Pi 5)?

See also taptap-mqtt/issues/2
(Thanks for the two cool tools!)

[willglynn]

Starting with communication problems: taptap has counters which would help identify problems at various layers. Here, I'd be interested in gateway::link::Counters, but I don't think those are exposed in a way you can access. I can help you find out; please try capturing some data with taptap peek-bytes and paste it into a Gist.

TAP <-> CCA communications cables can run very long distances. The best place to monitor those communications is between the TAP and the CCA, TAP <-> monitor <-> CCA, since both the TAP and CCA terminate the RS-485 bus. If your existing cable is already run and your monitoring device is 20m away, I would suggest running two new cables between the CCA and the monitoring position so that you can wire it up as TAP <-> existing cable <-> new cable 1 <-> monitor <-> new cable 2 <-> CCA, which is effectively just a 20m longer version of TAP <-> monitor <-> CCA.

My system has 135x TS4-A-O optimizers. They capture power reports every 20 seconds, and they transmit them in pairs every 40 seconds. This system informed my documentation for the slot counter, and the implementation of a SlotClock which can turn slot counter values into timestamps.

Most other users have reported smaller systems with much faster sample rates – as low as every couple seconds – and so far, all the relevant timestamp-related logic appears to be correct. I suspect that your system is one of these every-couple-seconds systems and some power reports are getting lost, but it's also possible your system is novel in some way.

[SebStaeubert]

THX for your answer.

I recorded ~60 sec with taptap peep-bytes --serial /dev/ttyUSB0, but it's already dark outside.

Perhaps my wiring is not good. I connected the A/B cables of the USB RS485 adapter directly to the TAP terminals of the CCA. So, in a way, they are parallel, but not in such a way that not all signals might pass through the USB adapter.
My setup is therefore more like this:

TAP <---> CCA <---> USB RS485

...or this:

TAP <--------------> CCA
USB RS485 <---^

And i did not connect the ground wire, too.

I will change that tomorrow and I will do another record after!

[SebStaeubert]

I changed the wiring.

...and recorded another taptap peek-bytes --serial /dev/ttyUSB0 (~60sec at daylight ~50Watt per module)

But still "offline" nodes.

[SebStaeubert]

Software Version of my CCA is "3.8.3-ct-3"
...via http://<cca-ip>/cgi-bin/mobile_api?cmd=DEVICE_INFO&dev=1&ver=1

[daimonkor]

I used, HA addon and the same - all PVs are offline
software "4.0.1-ct"