SMA SUNNY CENTRAL STRING-MONITOR US Technical Description page 31

SMA Solar Technology AG
6. Tighten the screw terminal using a screwdriver. The
required torque is 2.2 in-lb (0.25 Nm).
7. Pull the wires to check that it is securely in place.
8. Note down the wire color:
GND
Data+
Data–
9. Shorten the fourth wire which is unused.
☑ The data cable is prepared.
Technical Description
Communication connector
SSMUS-TUS094511 31