7-2
Section
Responding to Displayed Error Messages
272
[Screen when an error has occurred during sending]
<Error Description>
Time Out
Sending Error
Confirm
Confirm
Message
Cause
Remedy
(SCI)
Parity Error
Framing Error
Communication parameters set
incorrectly.
Check whether the parity bit, data bit length, baud
rate, stop bit length, and flow control settings of the
PC match the settings of the NT620S/620C.
Framing Error
Overrun Error
Overflow Error
Noise caused data corruption during
communication.
Use a noise-resistant cable if communication occurs
in an environment with high levels of noise.
Overflow Error
The connectors of the connecting
cable are not connected correctly.
Check the cable connection.
Time Out
The connectors of the connecting
cable have become disconnected.
Check the cable connection.
The PC is stopped.
Make sure the PC is able to communicate with the
NT620S/620C.
During transmission of one
command, a time lapse exceeding 5
seconds is detected.
Check the cable connection.
NAK Received
(end code of host link
simultaneously displayed)
Noise caused data corruption during
communication.
Check the contact allocation and the word settings.
If the influence of noise is deemed to be present,
separate the cable from the source of the noise, and
insert a noise filter in the power supply line. When
using in an environment with high levels of noise,
use a noise-resistant cable for communications. The
influence of noise can be further reduced by using
as short a cable as possible.
Power supply to the PC only is
temporarily interrupted (e.g., due to
momentary power interruption).
Note: Due to the power interruption,
information about multiple bits
registered by the PT is
erased. After that, if the PT
sends a command to read the
status of multiple bits, error
number 19 is returned from
the PC.
If the PC power interruption is due to noise, insert a
noise filter in the PC’s power line.
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
Sumcheck Error
The PC is transmitting incorrect
data.
Check PC operation.
Sumcheck Error
Noise caused data corruption during
communication.
Use a noise-resistant cable if communication occurs
in an environment with high levels of noise.
Содержание NT620C
Страница 1: ...Cat No V033 E1 5 Programmable Terminals NT620S 620C OPERATION MANUAL...
Страница 2: ...NT620S 620C Programmable Terminals Operation Manual Revised April 2001...
Страница 3: ...iv...
Страница 5: ...vi...
Страница 326: ...Appendix K Option List 325 Battery 3G2A9 BAT08 This is a lithium battery used for memory backup...
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