Omron NT-series Programmable Terminal V022-E3-1 Instrukcja Użytkownika Strona 259

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Section 7-2
Message Cause Remedy
Parity Error
Framing Error
O
v
e
r
r
u
n
E
r
r
o
r
Communication parameters set
incorrectly.
Check whether the parity bit, data bit length, baud
rate, stop bit length, and flow control settings of the
PC/Host match the settings of the NT600S.
O
verrun
E
rror
Overflow Error
Noise caused data corruption during
communication.
Use a noise-resistant cable if communication occurs
in an environment with high levels of noise.
The connectors of the connecting
cable are not connected correctly.
Reconnect the cable.
Buffer Overflow The NT600S receive buffer is full. Lengthen the command transmission intervals. If this
error occurs frequently, set flow control for
communications.
Time Out The connectors of the connecting
cable have become disconnected.
Reconnect the cable.
The PC/Host is stopped. Make sure the PC/Host is able to communicate with
the NT600S.
During transmission of one
command, a time lapse exceeding 5
seconds is detected.
Confirm the proper command length.
Check the cable connection.
NAK Received
(end code simultaneously
displayed)
Noise caused data corruption during
communication.
Use a noise-resistant cable if communication occurs
in an environment with high levels of noise.
Check the end code by referring to the PC user’s
manual.
Unit No. Error The unit No. does not match that set
on the PC.
Set the PC unit No. to “0”.
The PC is transmitting incorrect data. Check PC operation.
Noise caused data corruption during
communication.
Use a noise-resistant cable if communication occurs
in an environment with high levels of noise.
FCS Error The PC is transmitting incorrect data. Check PC operation.
Sum Error
Noise caused data corruption during
communication.
Use a noise-resistant cable if communication occurs
in an environment with high levels of noise.
End Code Error There is an error at the NT600S or
the C200H interface unit.
Contact your OMRON service center.
If an error occurs during the execution of a command, that command becomes
invalid and it is not executed.
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