Experimental Physics and
Industrial Control System

Wayne Dahl <[email protected]> · Fri, 18 Mar 2005 12:15:46 -1000

Let me add a little more detail

I'm compiling on solaris 8, gcc3.3 and running on solaris 8.

I don't know much about the communication between the device (SLC 500 PLC)
and the driver.

The driver is sending this.  The second line is my understanding of the
data.  cmd = [01] is an unprotected block read

[10] [02]{[01] [01] [01] [00]  [01]  [00]  [00]   [00]  [5E]}       [10]
[03] [FFFFFFE4] [29]
DLE  STX {cmd  dst  src   sts  lsTns msTns lsAddr msAddr bytecount} DLE  ETX
[checksum] [checksum]

And the response is (along with my understanding)

[10] [ 6] [10] [ 2] {[ 1] [ 1] [41] [10]} [10] [ 1]    [ 0]  [10] [ 3] [38]
[1f]
DLE  STX  DLE  STX  {dst   src cmd  sts }  DLE [lsTns] [msTns] DLE  ETX
[checksum] [checksum]

The response is being rejected because it doesn't contain the requested 94
bytes. 

Any help appreciated

Wayne

> -----Original Message-----
> From: Wayne Dahl [mailto:[email protected]] 
> Sent: Thursday, March 17, 2005 3:26 PM
> To: '[email protected]'
> Subject: Allen Bradley driver on Solaris
> 
> 
> Aloha
> 
> I almost have the Allen Bradley driver working for EPICS 
> 3.14.6 on Solaris but one problem remains.
> 
> The driver rejects the device response because it doesn't get 
> the number of bytes asked for.  The error is S_drvAbDf1_badFrame.
> 
> Can anyone tell me why this is happening?
> 
> Mahalo
> 
> Wayne Dahl
> California Association for Research in Astronomy 
> W.M. Keck Observatory
> 65-1120 Mamalahoa Hwy.
> Kamuela, HI 96743
> Ph: (808) 885-7887, Ext 502
> Fax: (808) 881-3535
> email: [email protected]
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System