Experimental Physics and
Industrial Control System

Eric Norum <[email protected]> · Thu, 5 Apr 2012 08:25:10 -0700

On Apr 5, 2012, at 7:19 AM, haquin wrote:

> Hi Mark,
> 
> I started to test the new release R2-4 of your modbus driver,
> 
> 1/ I have a regression problem:
> in case of "intarray_in" when scan mode is I/O Intr:
> Linux IOC crashes with segmentation error message

Could you run this again under GDB and send a stack trace?

> VxWorks IOC doesn't crash but data in the waveform are equal to zero
> 
> On Linux if I start with the scan mode set to none there is no crash.

What happens if you change the mode to I/O Intr after the IOC has started?

> 
> In both cases linux and VxWorks,
> if I change the scanning mode to any periodic scan (with a caput in the SCAN field), I do retreive correct data.
> 
> here is my drvModbusAsynConfigure
> drvModbusAsynConfigure("AR-GT7-PC3:Read_All",    "AR-GT7-PC3", 255,  4 , 0 , 46 , 0 ,  2000 , "InterfaceIocaste")
> 
> here is my waveform:
> record(waveform, "$(EQPT):ReceiveModbusTable") {
>  field(DTYP, "asynInt32ArrayIn")
>  field(FLNK, "$(EQPT):TrigModbusTableProcessing")
>  field(INP, "@asyn($(EQPT):Read_All 0)MODBUS_DATA")
>  field(NELM, "46")
>  field(FTVL, "LONG")
>  field(SCAN, "I/O Intr")
> }
> 
> 2/ I have tested the retreival of float32_LE with ai record, this is ok
> 
> tomorrow I'll test retreival of int32 and also he writting.
> 
> best regards.
> 

-- 
Eric Norum
[email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System