Morningstar TriStar MPPT Series, Инструкция по установке, эксплуатации и обслуживанию

Страница: 31 / 37

60 Troubleshooting
NOTE:
For more in-depth testing and diagnosis, download the TriStar MPPT 150V Testing Document
from the Support section on our website: www.morningstarcorp.com/
Network and Communication Issues
Problem:
Cannot connect to the controller via RS-232
Solution:
Check the following:
• The RS-232 cable is straight-through, not a Null Modem (cross-over)
• 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
QRDFWLYLW\WKHZURQJ&20SRUWKDVEHHQFKRVHQRUWKHUHLVDFRQ¿JXUDWLRQLVVXHZLWKWKH
adapter.
• The default MODBUS ID of the TriStar MPPT 150V is 1. Verify that the PC software is
FRQ¿JXUHGWRFRPPXQLFDWHXVLQJWKHFRUUHFW02'%86,'
Problem:
Cannot connect to the controller via EIA-485
Solution:
Check the following:
• The RS-232 port is not in use. The EIA-485 and RS-232 ports cannot be used simultane-
ously. Only one port can be used at a time.
• The RSC-1 adapter used to connect the PC to the EIA-485 network shows a green LED
and pulses red when a connection is attempted. See the RSC-1 documentation for more
information.
• Each controller or device on the EIA-485 network has been programmed with a unique
MODBUS ID.
• A serial cross-over (Null Modem) cable is used for the connection between the PC and the
Morningstar RSC-1 485 Adapter. A straight-through serial cable will not work.
• Power is supplied to the 4-wire bus on the Power/Ground lines. The bus requires voltage
in the range: 8 - 16 Vdc.
• All bus connections are secure and each terminal is wired in parallel: line A to line A, line B
to line B, etc.
Problem:
Cannot connect to the controller via Ethernet
Solution:
See the TriStar MPPT 150V Networking Companion Document , available on our website.