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RD-485
Instruction Manual P.16
Connect Power
The Reason of Communication Failure
Work LED is not bright, said the appliance or DSP processor is in question.
Work LED is bright, please re-set the work rate and RF frequency. After set
the completion, please inspect Link LED Work LED will alternately flashing
lights or not. If is not flashing, it said port communication has problems.
The Reason of Communication wrong
Q:
Whether RD-485 can send the information over 253bytes?
A:
RD-485 does not allow information over 253bytes to send a maximum of 251
bytes.
Q:
Whether or not the information at the first time with information on the second
intermediate waiting for the short time interval at 8ms, and the high rate of a
few interface, the wireless transmission rate set is too lower?
A:
Solution: give time to wait for longer and fixed length of 251 bytes packet sent
as an example interval up to 50ms.
Q:
When I connect PLC, it can communication each other, but PC can
communication to PC. Would you please let me know what
’s happen?
A:
When you set link on PLC, you need to set Parity on None, also, you must to
check Com Port of PLC support Parity is None.
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