Alpha ESS SMILE5 Installation, Operation & Maintenance Manual page 56

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6.4.4.1 Meter SM60A (If Applicable)
6.4.4.1.1 SM60A connect (with meter plug), if applicable:
6.4.4.1.2 SM60A connect (with meter plug), if applicable:
Connect the power meter （PIN 5，6）to the meter port（PIN 3，6）using the
RJ45 cable.
For AC/Hybrid system, there are two meters needed:
SM60A connect (with meter plug)
SM60A connect (without meter plug)
Electrical Connection