Epsolar ET2415N, Instruction Manual

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Page
44
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Cannot connect to the controller via RS-232.
Probable Cause
：
RS-232 serial baud rate setting error or serial-USB adapter incorrect
configuration.
Solution
：
Check the following: 1.The RS-232 cable is straight-through, not a Null
Modem (cross-over); 2.Whether the selected RS-232 serial baud rate is suited for your
device; 3.If using a serial-USB adapter, verify that the adapter software is installed
and a serial COM port has been mapped. Check the activity light on the USB adapter
if it has one. If there is no activity, the wrong COM port has been chosen or there is a
configuration issue with the adapter.