4
Connecting the PE Cable
3.2
To enhance the
corrosion resistance of
the PE terminal, apply
silicone grease or
paint on it after
connecting the PE
cable.
Connecting the RS485 Communications Cable
3.3
Port Identifier Description
COM1, COM2, COM3
+ RS485A, RS485 differential signal+
– RS485B, RS485 differential signal–
•
The recommended RS485 communication distance is less than or equal to 1000 m.
•
The SmartLogger can connect to RS485 communications devices, such as a solar inverter, an
environmental monitoring instrument (EMI), and a power meter over the COM port.
•
Ensure that the RS485+ and RS485– terminals are respectively connected to the COM+ and
COM– ports on the SmartLogger.
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