Jetter JC-120MC User Manual page 467

JC-120MC
Jetter AG
all characters should be removed from the receive buffer and discarded when
an error bit is set.
Possible causes of error and troubleshooting:
Error
Framing error Jammed data transmission
caused by EMC problems,
defective cables or
connectors
Incorrectly set communication
parameters (baud rate,
number of stop bits, etc.)
Parity error Jammed data transmission
caused by EMC problems,
defective cables or
connectors
Incorrectly set parity
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.
Possible cause











Programming
Troubleshooting
Check the wiring and
connectors.
Use shielded cables.
Do not lay cables near sources
of interference.
Make sure the set
communication parameters are
consistent with the settings of
the connected device.
Check the wiring and
connectors.
Use shielded cables.
Do not lay cables near sources
of interference.
Make sure the parity setting is
consistent with the setting of the
connected device.
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.
467