Framing error on seriell port

Hi,
I am trying to read data from the seriell port. I doesn't know exactly
the correct setting for communication with the external device, but I
know, I use the correct baud rate.
My problem is, I get from the "Bytes atseriell port.vi" the error 4008h
(framing error). What is the meaning of this error? Any suggestions? I
read 2 bytes more from the port, then I should. This is independent from
the string length.
Regards
Ralf

"Rolf Østvik" wrote:
>
> On Tue, 30 May 2000 13:03:28 +0200, Ralf =?iso-8859-1?Q?K=E4hler?=
> wrote:
> >I am trying to read data from the seriell port. I doesn't know exactly
> >the correct setting for communication with the external device, but I
> >know, I use the correct baud rate.
> >
> >My problem is, I get from the "Bytes atseriell port.vi" the error 4008h
> >(framing error). What is the meaning of this error? Any suggestions? I
> >read 2 bytes more from the port, then I should. This is independent from
> >the string length.
>
> You might try to experiment with different types of parity (and maybe
> number of stop bits). Do the change of parity with the
> 'Serial Port Init.VI'
>
> --
> Rolf
Thank's.
I tryed this and so
lved the problem. Another type of parity and 2 stop
bits, this was all.
Ralf

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Error -1073807253 occurred at VISA Read in transient SR830.vi VISA: (Hex 0xBFFF006B) A framing error occurred during transfer.

Hi,
I am have written a program with labview to make transient c-v measurement using a stanford research SR830 lockin amplifier. The program seems to be runing fine, but sometimes it is givvibg an error:
Error -1073807253 occurred at VISA Read in transient SR830.vi
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Error -1073807253 occurred at VISA Read in transient SR830.vi
Possible reason(s):
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3... Parity setting mismatch - If I send 7 data bits + parity and you expect 7 data bits and no parity, the stop bit is in the wrong place.
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Solved!
Go to Solution.
Attachments:
transient SR830.vi ‏94 KB
csac.vi ‏8 KB
sr830 initialize1.vi ‏15 KB

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Framing error

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#include
TXSTA_INIT EQU 0x24
TRISC_INIT EQU 0x80
RCSTA_INIT EQU 0x90
#define Freq .4000000
#define Baud(X) (Freq/(.16*X))- .1
call SetupSerial
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;;;;;;;;;;;;1MS DELAY;;;;;;;;;;;
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MOVWF H'31'
LOOP2 CALL DLY
DECFSZ H'31'
GOTO LOOP2
RETURN
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MOVWF H'30'
NOP
LOOP1 DECFSZ H'30'
GOTO LOOP1
NOP
RETURN
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movlw TRISC_INIT
movwf TRISC
movlw Baud(.9600)
movwf SPBRG
movlw TXSTA_INIT
movwf TXSTA
Banksel RCSTA
movlw RCSTA_INIT
movwf RCSTA
Return
Usart_Send:
banksel TXSTA
SS_Wait btfss TXSTA,TRMT
goto SS_Wait
bcf STATUS,RP0
CALL DLY1MS
Return
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Attachments:
New_ash.vi ‏180 KB

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2. Make sure the parity bit matches the device.
3. Make sure the number of stop bits matches the device.
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Last edited by noalwin (2009-12-28 12:38:51)

Framing error on seriell port

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