Linking EDMI Mk7C smartmeter to SolarLog 200 - connection information missing

Hardware
,
8

Experiments

  1. I checked the cable from the smart meter to the Solar Log for continuity. It was OK

  2. I connect the smart meter S0 output to an 9v battery, 1k resistor and LED. It flashed every second. So OK

  3. I touched a 1k resistor across the pins 1 & 2 on the Solar Log S0 plug with pins 3 & 4 bridged. (The plug was inserted but there was no connection to the smart meter). I repeatedly touched across pins 1 & 2 with the resistor every 1 or 2 seconds. I checked the solar log web display (local access http://192.168.1.11) Neither the Current Values or the Consumption screens showed any data.

  4. I put a voltmeter across pins 1 and 4 on the Solar Log (no connection to the smart meter). There was no voltage. I was reluctant to measure mA by shorting the terminals.

5 I have double checked the Solar Log 200 Installation manual. It gives the Solar Log plug pin connections but does not state or show the pin order. Neither is the pin order printed on the Solar Log. I’m presuming the pin order (1-6) from left to right.

Conclusion: the Smart Meter is generating pulses. Problem looks to be in the Solar Log.

I have just emailed Solar Log with the above. I’ll update this thread with their reply.

Thanks Robert for your suggestions. It gave me the confidence to experiment. I had previously been wary of damaging either the smart meter or the Solar Log.

Alan