Jetter JC-120MC, Руководство пользователя

Страница: 467 / 634

Jetter AG 467
JC-120MC Programming
all characters should be removed from the receive buffer and discarded when
an error bit is set.
Possible causes of error and troubleshooting:
Error Possible cause Troubleshooting
Framing error Jammed data transmission
caused by EMC problems,
defective cables or
connectors

Check the wiring and
connectors.

Use shielded cables.

Do not lay cables near sources
of interference.
Incorrectly set communication
parameters (baud rate,
number of stop bits, etc.)

Make sure the set
communication parameters are
consistent with the settings of
the connected device.
Parity error Jammed data transmission
caused by EMC problems,
defective cables or
connectors

Check the wiring and
connectors.

Use shielded cables.

Do not lay cables near sources
of interference.
Incorrectly set parity

Make sure the parity setting is
consistent with the setting of the
connected device.
Buffer overflow The external device sends
characters at too high a rate
and the application program
is not able to read them out of
the receive buffer in due time.

Program a software handshake.

Set a lower baud rate.

Make sure that characters are
read out from the receive buffer
faster. To achieve this the
program code has to be
optimized.