Experimental Physics and Industrial Control System

You may be able to get more information by changing this line:

asynSetTraceMask("serial_974",0,0x9)

to

asynSetTraceMask("serial_974",0,0xFF)

Here are some possibilities:

- Someone changed the baud rate on the device

- The cable is not the same one you were using, or it is broken.

You can open an asynRecord.adl display and try sending it commands, changing the baud rate, stop bits, etc. until you get a response.

Mark

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of ???
Sent: Monday, October 12, 2015 9:48 AM
To: [email protected]
Subject: why failed without changes

Hi, everyone:

    My environment: SL 6.0, epics 3.14.12.1, synApps 5.6
    I have a strang question about controling a counter(974) with synApp5.6.
    I successfully used it before. Now,I failed control it, even I failed control it with Labview(windows program). 
    Some more information:I do nothing except connecting a signal generator to 974, when I disconnected the signal generator, it failed in control.


**********************************
Following is part of the st.cmd.( I think it is the information)

####
drvAsynSerialPortConfigure("serial_974","/dev/ttyS0",3,0,0)
asynSetOption("serial_974",0,"baud","9600")
asynSetOption("serial_974",0,"bits","8")
asynSetOption("serial_974",0,"parity","none")
asynSetOption("serial_974",0,"stop","2")
#asynSetOption("serial_974",0,"clocal","Y")
#asynSetOption("serial_974",0,"crtscts","N")
asynOctetSetInputEos("serial_974",0,"\r\n")
asynOctetSetOutputEos("serial_974",0,"\r\n")
asynSetTraceIOMask("serial_974",0,0x2)
asynSetTraceMask("serial_974",0,0x9)
asynOctetConnect("serial_974","serial_974")
asynOctetWriteRead("serial_974","INIT")
2015/10/12 22:01:57.625 /dev/ttyS0 write 6
INIT\r\n
2015/10/12 22:01:58.725 Error in WriteRead, nout 4 ninp=0 error 
###################### setup 974 #############################
initScaler974("serial974","serial_974",0,100)
########################################################

thanks for your help,
Liang

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Re: why failed without changes Maren Purves

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