I tried to find out the correct wiring between RUT955 i/o pins and my power meter which has an S0+ S0- interface with the following specification:
Interface potential-free through an optocoupler,
max. 30V DC/2OmA and min. 5V DC.
S0: Pulse output according to DIN EN 62053-31,
Impedance 100 Ohm, pulse length 30ms, 2000 Imp./kWh
[Manual: https://www.eltako.com/fileadmin/downloads/en/_bedienung/WSZ15D-32A_28032015-1_gb.pdf ]
- Which i/o input pins of RUT955 do I have to use?
- Who should the circuit diagram look like?
- What kind of commands can be used directly in the RUT OS / CLI to monitor/count the pulse coming in?
- Is there a suitable .sh script available?
Help appreciated, many thanks in advance.